Cheapest Lithium Challenge: Redodo 200ah plus teardown

Рет қаралды 58,891

Күн бұрын

What's the cheapest good battery on Amazon? This is the beginning of a series where we do just that search. We don't think batteries have to be expensive to be great.Today Clark reviews a LiFePo4 battery he has had for a while-the REDODO 200Ah PLUS.
IN THIS VIDEO
[00:00] Intro
[00:26] Why this Series?
[01:45] POWER
[02:37] Charging
[03:34] Discharging
[06:28] Disassembly
[08:28] CONTENTS
[19:16] CELLS
[21:10] Internal Resistance
[29:55] High-Current Test
[31:21] Final Thoughts
[34:07] What do you think?
- Redodo website （Extra 4% OFF code: EmilyAndClark）
Link to this battery (Redodo 200Ah PLUS): shrsl.com/43lbd
Link to all Redodo 12V products: shrsl.com/43lbf
THE BATTERY LEADERBOARD: Take a look at this link. It leads to a table of all the batteries we have reviewed, looking for that diamond in the rough. We'll keep adding to it.
docs.google.com/spreadsheets/...
If you're interested in learning more about the BankManager™, the best place to go is here:www.emilyandclarksadventure.c...
Here is a link to a lot of the items we use aboard Temptress for power. You'll find links to things like the Voltage-Sensitive Relay: amzn.to/3OJJHay
corrections:
it turns out this BMS does balance but really slowly.
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Have questions or comments? Leave them below! We do our best to read and answer all comments on our channel.
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LINKS TO PRODUCTS WE LOVE (Affiliate links to things we actually own, use, and recommend. We are almost never paid by companies to endorse products. If we are, we will tell you in the video): www.amazon.com/shop/emilyclar...
PLEASE SUBSCRIBE and click the BELL to see new videos every week, and more content like this.
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Пікірлер: 325

@EmilyAndClark 11 ай бұрын

Interested in this battery? Use code EMILYANDCLARK for an extra 4% OFF: shrsl.com/461b3

@user-sq9rk9vc1n 2 ай бұрын

I had 3 x Redodo 12v 100ah batteries and it works well a few times in the first 3 months. After that, when I had issues they were not forthcoming in their reply. Response and attitude are bad for the past weeks. I am still hoping they will handle this well.

@EmilyAndClark 2 ай бұрын

Thanks for sharing your experience

@GeorgeShook-su8fs 2 ай бұрын

I do not quite understand on the comment that you made that on those batteries you can't take the cold so you're saying that if you are in a camper and it's 40 below outside that that battery could have some internal breakdowns because it's too cold to operate?

@EmilyAndClark 2 ай бұрын

As I answered in your other comment. LiFePO4 cells are damaged if charged while frozen

@kirenireves Жыл бұрын

Amazing content. Like a mini-class in batteries. Your service to the boating world (...and the RV world, and the off-grid homestead world, and the .....) is appreciated.

@EmilyAndClark Жыл бұрын

Thank you

@bitbyterjr Жыл бұрын

Great in-depth video and yes I'm sure we'd love to see a cell balancing video.

@marzsit9833 Жыл бұрын

the reason batteries like this have internal spacers is because the case is designed to fit in existing battery boxes and holders designed for lead/acid batteries. yes, they could make them smaller but then they would not be a standard size and would require custom mounts.

@jwiger 10 ай бұрын

You're absolutely right. This battery size is a 4D. Common in tractors and other heavy duty applications.

@SirCharles12357 Жыл бұрын

Great job editing that video Emily! Thanks Clark! I learned a lot and will put that knowledge to use!

@lenwhatever4187 Жыл бұрын

A good series. I think almost everyone will be looking at lithium replacements within the next 5 years, unless something else even more fantastic hits the market running. The reality though, is that while an E-car needs better power density going forward, a boat (besides dinghy) needs better power collection. I expect the power collection for boats will move slower than battery power density.

@herberthahn6964 Жыл бұрын

Excellent beginning if you missed something I would not know. I now know more about lithium batteries than I did before the video. Thanks

@justinschuchat3650 Жыл бұрын

Clark and Emily, you both provide such great information to the Sailing community. The battery teardown is also good information. There are so many battery teardown videos on KZfaq already and I feel your time would be spent better on the things you both do already. By the way my Bank Manager is humming away and my batteries are happy and so am I.

@EmilyAndClark Жыл бұрын

Great

@paulpozboater Жыл бұрын

Wonderful! You're the best, Clark!!! I learn so much watching.

@EmilyAndClark Жыл бұрын

Thanks Paul

@minivancampergal1554 11 ай бұрын

Wow, excellent review!! I’ve been learning how to review power stations for my channel. You’re so knowledgeable, thank you for sharing your expertise! (I also love the leaderboard idea- I hate that I gave my first batteries such glowing reviews!)

@kurtschaefer8489 Жыл бұрын

Thank you Emily and Clark. I already purchased a BBM from you. I'll be checking your reviews on batteries before I buy.🌊

@petersongallery Жыл бұрын

Clark ... exccellent in depth look at the battery. Yes do more, dive deeper, we do care and value your take on choosing the power for our floating homes. Thanks!

@EmilyAndClark Жыл бұрын

Thanks Bill

@justinallen9104 Жыл бұрын

Your videos are such a valuable wealth of knowledge, I appreciate the way you explain the theory and application on most systems you have covered. You make the DIY of what can seem to someone unfamiliar with these systems, like me, easily achievable! I look forward to your videos! Thank You!

@EmilyAndClark Жыл бұрын

Thank you Justin. Let me share a joke that a patron made with me. Clark, you terrify my wife. You make me think I can do things I shouldn't be trying.

@justinallen9104 Жыл бұрын

@@EmilyAndClark I love it!

@landosharks9669 Жыл бұрын

I spent so so much time researching lithium batteries cost/value and ultimately took the chance on Redodo. Since that purchase back in January, these batteries are climbing in price. I respect your own hands-on research and am pleased that I went with them.

@EmilyAndClark Жыл бұрын

Thanks

@mondobizzarro79 4 ай бұрын

HI! How are you feeling with the redodo battery so far? There are many negative reviews of the cheap lifepo4s, I would also like to get one but I'm doubtful. Thank you!

@johnnylightning1491 Жыл бұрын

Really good video Clark. I'm looking forward to the whole series, but since my batteries will be in an RV low temp protection is important. Hopefully some of the others will have low temp protection. Keep the good stuff coming.

@EmilyAndClark Жыл бұрын

Yes I have some coming with that feature

@livingsimplytosimplylive6817 Жыл бұрын

Just really appreciate your videos

@EmilyAndClark Жыл бұрын

Thank you. I'll do better on the next one. This was so much more work than I thought it would be. It will be easier next time.

@livingsimplytosimplylive6817 Жыл бұрын

@@EmilyAndClark You have a wonderful ability to explain technology.

@marklapierre5629 Жыл бұрын

Thanks for doing the research. I'll be taking advantage of your efforts when I set up my electrical system on my refit project.

@EmilyAndClark Жыл бұрын

You're welcome Mark

@kbjerke 2 ай бұрын

After a fair bit of research, I selected a pair of 100 A/H batteries from this company. I've had them only a couple of weeks, but so far they work really well as a replacement for the AGMs I had in my small home emergency backup. Thanks for the review and deep dive into the insides!! 👍

@DroneManMurphy 7 ай бұрын

Studying up to start a backup solar system; very interesting video! 👍😊

@YTMegiddo Жыл бұрын

Great stuff and doing this while not feeling well... Amazing!

@christophersimpson7052 Жыл бұрын

perfectly timed video thank you for all the hard work :D

@EmilyAndClark Жыл бұрын

Thanks Christopher

@josephclayton1835 Жыл бұрын

Good video, looking forward to the other battery reviews.

@EmilyAndClark Жыл бұрын

Thanks the next battery was lost in shipping but I understand it's on the island

@Austin-fc5gs Жыл бұрын

Thanks for the video, hope you feel better

@EmilyAndClark Жыл бұрын

Thanks. My lungs just aren't strong. It will clear eventually.

@johnpray9049 Жыл бұрын

Thank you for the video, I found it very informative!

@EmilyAndClark Жыл бұрын

You're very welcome John

@mattcaine7614 Жыл бұрын

Very good information guys, hope at some point you could do one on building you own battery. i.e. from the cells up.

@EmilyAndClark Жыл бұрын

Yes I think that's a good idea

@yannkitson116 Жыл бұрын

Another good video, thanks for sharing your knowledge 👍

@EmilyAndClark Жыл бұрын

You're welcome Yann

@budawang77 Жыл бұрын

Excellent super useful video. Looking to eventually replace my Gel batteries in my off-grid house here in the South Pacific (Vanuatu).

@PyeGuySailing Жыл бұрын

I'm glad it wasn't terrible, I bought the 100amp version for my electric dinghy setup. Funny enough because of Peukert's Law, 4 of these batteries in series could potentially replace the 16 golfcart batteries I have running my electric sailboat. It might even be better, I'd just have to change my motor controller 🤔🤔🤔

@bobuncle8704 Жыл бұрын

What an excellent battery review. I may well be building a system later this year, and this will help me. Thank you

@EmilyAndClark Жыл бұрын

Thanks

@EmilyAndClark Жыл бұрын

Remind me of your real name I know it's not Bob but I forgot.

@bobuncle8704 Жыл бұрын

@@EmilyAndClark my real name is Ian.

@EmilyAndClark Жыл бұрын

Yep. Sorry I forgot Ian

@bobuncle8704 Жыл бұрын

@@EmilyAndClark all good

@brownnoise357 Жыл бұрын

Great Review ! Loved it ! 👍🏴󠁧󠁢󠁷󠁬󠁳󠁿⛵️🌟🌟🌟

@EmilyAndClark Жыл бұрын

Thanks

@matteng2332 7 ай бұрын

Your videos have been a great help to me, I have built a 200 amp hour 2000 W, portable battery box for camping.

@EmilyAndClark 7 ай бұрын

I'm glad they helped

@dennishively5994 Жыл бұрын

Awesome video , very good information too, thank you

@EmilyAndClark Жыл бұрын

You're very welcome Dennis

@DavidYoung-mi4zq Жыл бұрын

I got 4 of these Redodo batteries for drop in replacement for the Ryobi 48V zero turn lead acid batteries. So far so good!

@Zshbk 8 ай бұрын

Woah. That's a cool application. What benefits have you seen by not using these over the ryobi branded cells?

@bernddette4119 10 ай бұрын

a real no nonsense review, much appreciated

@EmilyAndClark 10 ай бұрын

If you liked that, check out the leader board in the description. Links to other reviews there

@stephaneroy8415 5 ай бұрын

I've watch quite a lot of video to make up my mind about Lipo Batteries , but you've raise my understandind to a new level , and you really make it efficently and interresting , Thanks a bunch and keep up , i'll be back for sure.

@EmilyAndClark 5 ай бұрын

Nice of you to say Stephan. Check out the leader board in the description for more reviews. Also we have a lot of other electrical videos. You might want to start here www.emilyandclarksadventure.com/bbms

@brownnoise357 Жыл бұрын

PS to my post below. Further to main Bank being AGM. I think it was the Bluetti Power Station that had the good info on charging level for their Lifepo4 Batteries, and I think I’ll be going with one of those with I think it is their 6 years Warranty as it will be rally handy backup with AC, DC, and USB power supply output, and there is a model with 3,000 watts AC Output, so for Charged up during the day, there an be nice stopgap power available during Night Watch for water heater, portable induction hob use, microwave, to reduce the drain from the Housebank with that keeping the Nav Lights, instruments, fans, refrigerator, freezer, and such going, and say with 1200 ah of AGM storage, it should easily keep within that 20% capacity limit to discharge of up to 240 ah of consumption from the House Bank before Recharging current goes back in ? Lead aksi ,oves going back to a state of charge of 100% asap. Which is where the high output engine alternator will fit in with two Duty Cycles per day for the inboard engine. It'll be interesting to se how the schedule works out, when put into practice anyway. Bob. 👍

@EmilyAndClark Жыл бұрын

That's a way to go. And I liked my bluetti. But with everything in one box one failure brings you down. Over the years I've grown to prefer separate components. But both approaches have merits.

@mikestruss7582 Жыл бұрын

Hi Clark, great video. I purchased ecoworthy 100 AH lifepo4 because of the size you mentioned. In group24 case instead of group 27 like all the others. So far has been good.

@EmilyAndClark Жыл бұрын

Good to know

@williamjamesenkerwitz9495 Жыл бұрын

Sorry to much problem I for one will stick to my lead acid connect and you good to go no up and or down and up good luck have a fantastic day from South Africa

@jonathanwetherell3609 Жыл бұрын

As a Mech. Eng. that was spot on. Thanks for the tutorial.

@EmilyAndClark Жыл бұрын

Thanks Jonathan. High praise

@alanblyde8502 Жыл бұрын

Great review Clark and Emily, probably and active ballencer like a neeey might be the go, Andy from Offgrid garage has played around with them. Oh and that table😀

@GroovyVideo2 Жыл бұрын

built my own battery 7 yrs ago using Calb LFP cells and No BMS - Top and Bottom balanced cells - cycled battery 70% daily living in RV - Victron solar charger - Battery mostly stayed in balance - 4 ish month intervals would top balance with a R/C charger - Zero problems

@EmilyAndClark Жыл бұрын

Good to know

@energiasolaroff-grid3544 8 ай бұрын

It's very good, congratulations my friend.

@TheOldGuy Жыл бұрын

Great Job with the review! The only thing I could think of would be to have some thermal imaging capability. You could look at the heat dissipation of the heat sinks on the BMS, and if there were any hot spots on the bus bars ( that may indicate a substandard solder / weld). Thanks!

@EmilyAndClark Жыл бұрын

What a great excuse to buy a fun toy!

@TheOldGuy Жыл бұрын

@@EmilyAndClark You're Welcome!

@joelw2023 11 ай бұрын

Great test. I know you're retired but you're good and logical at this kind of stuff. Thanks for sharing.

@EmilyAndClark 11 ай бұрын

They don't take your brain when you retire. :)

@joelw2023 11 ай бұрын

@@EmilyAndClark Yeah, I mean thanks for still putting in the effort and passing along your findings.

@mpdsailing Жыл бұрын

Excellent!!! Thanks

@lolonav Жыл бұрын

To compare the cell i would put them in almost short circuit (very short time to see the max Amp they can deliver I would use a multimeter wich can record they should be all close to each other

@dicksonchan5112 Жыл бұрын

Great videos! Could you possibly do a review on the SOK marine lithium batteries? Looking forward to more of your videos

@EmilyAndClark Жыл бұрын

They haven't offered one yet. I'll write them a note. If you, as an independent buyer, wrote them suggesting it might go further. We are emilyandclarksadventure@gmail.com

@cgwworldministries83 11 ай бұрын

The best I have found currently is a tossup between timeusb's 220ah and redodo 230ah (they are the same battery getting around 227ah of time) Both have serviceable steel casing that you can unscrew for under $600USD. Find a better deal, I dare you. Holy shit someone who understands power like I do!!! Finally! It's like people buy things and slap them together and don't think about any of it. They end up catching $250,000 RVs on fire and scratch their heads wondering what went wrong but in the next RV they make the same mistakes! Instant subscribe from me!

@jasonsweet1868 Жыл бұрын

Don't know if it's been said but the foam could provide impact protection

@Dresdenfiler Жыл бұрын

Wow, that was a great video! Thank you for the teardown. Have you ever considered building a battery from scratch? From sourcing cells/BMSs to putting it all together?

@EmilyAndClark Жыл бұрын

Sure I've done that. We have a 50amphour battery I built in a pelican case we use a lot for portable needs. We also use it with an electric motor on Emily's boat. In the video when I talk about destroying cells. Well, that was the first attempt at that battery.

@kirenireves Жыл бұрын

@@EmilyAndClark Please do a video someday about building your own battery. D.I.Y-L.I. ^_^

@Adamdaj Жыл бұрын

Looks like four of them batteries would enough to power a GM EMD SW series of locomotives. Good Video

@spaceportseven 7 ай бұрын

Nice video, I've been wondering what's in the 200ah etc ones ! Though I did think they BMS would balance the cells automatically ? I've got a home made one utilising 18650 lithium ions (not phosphate) and the BMS looks after the balancing almost perfectly

@zedoalfa2377 Жыл бұрын

Excellent vídeo !.

@EmilyAndClark Жыл бұрын

Thank you

@bravofighter Жыл бұрын

Great video, thanks for this. I’ve been shopping to eventually replace my AGM, but I have a lead acid still in my little sailboat, only because the battery compartment is so tiny. I have to shop around, but I don’t know what to trust. I like Dakota Lithium, but they’re out of my budget…by a LOT. I need something suited to reality, but with decent enough quality to not damage my VHF or burn smaller gauge wires.

@EmilyAndClark Жыл бұрын

I think there are cheap Jem's out there. I'm looking for them. No battery out there is going to damage your vhf or in itself burn your wire. I suggest my master class playlist

@thechiefsway2618 Жыл бұрын

I did a video on how to balance a new battery that was out of balance in a existing bank. Took several weeks though. Internal balancing is very low current and very slow and typically only balances during charging.

@user-xp1iu1nn9t Жыл бұрын

Good job. Thanks 👍😃

@EmilyAndClark Жыл бұрын

You're very welcome Trevor

@oneeyedphotographer 7 ай бұрын

9:32 I presume those terminal posts are well sealed. So could be the USB charge points, by sealing around the entry points' grommet. You would need to inspect.

@johnlove4183 Жыл бұрын

Very informative Clark. What are the critical safety things you look at when evaluating a battery's construction? Get well soon.

@EmilyAndClark Жыл бұрын

Kinda talked about them in the video.

@ballomni Жыл бұрын

You should also include AGM lead, according too everything you have said, I have also researched There is no replacement for lead it has properties that, lithium does not have, my deep cycle 8D and 4D have started my 28 hp M2003 Volvo, I also had too start it by manual crank once, Life savor with a Hurricane 20 hours away. Yes, purchased a dedicated starter battery as soon as I got back, but never had too use it after that. Funny how that works. I have a 8D 4D AGM’s and standard Start car battery, think it is a die hard, was thinking about replacing the 8D with lithium iron, figure the weight savings and power increase would let me run a new 3000 watt inverter. Have a 500 watt one now , but refitting and space is always a premium the wife Loves her hot showers I have both Electric AC or engine coolant water heater, works great, with the new Water Maker, still have not decided on that also, with our 110 gallons of fresh water would not have too fill both tanks, rather use them as ballast on different tacks pump 50 gallons to either side, make water at the destination on hook. Also less weight faster boat. She is already very fast as a Beneteau 350 89, points also very high, winged shoal keel cast iron. Always wanted too sail the Chesapeake and beyond with her. Went all the way too Bangor Maine with her. So doing the work in planning her refit, Love your series, Troubled about your cough, my wife has that since Covid, slow too get better. If you both are ever up in Long Island reach out. Greenport on the north fork is where StarLight is Where in Smithtown, center North Shore. Family goes back to 1631 here.

@EmilyAndClark Жыл бұрын

Thanks. I agree with the advantages of lead. www.emilyandclarksadventure.com/bbms

@tangoreal9098 Жыл бұрын

Excellent content! Clark did you consider building a watermaker?

@EmilyAndClark Жыл бұрын

I think that topic has already been well covered by others. If I needed to replace ours I would but that's a big expensive project to do just for a video.

@EmilyAndClark Жыл бұрын

And thanks

@ericklein5097 Жыл бұрын

Really shouldn't have the current running through your voltage measurement leads but if you do it the same way with all the cells then you can see if theres a deviation between the cells. So in this case it works to make sure they are matched

@davidpayne9933 Жыл бұрын

Good review. I have Bluetooth connection with my Lithium BMS. I find it useful and informative. Maybe no cheap batteries have this; if they do you might want to include a look at it.

@EmilyAndClark Жыл бұрын

I have one coming with that feature.

@dsanner Жыл бұрын

Nice break down... multiple cheap batteries each with their own BMS seems like good/inexpensive solution. I would think the BMS should do some amount of passive cell balancing but only when you're getting one of the cells into the 'hockey stick' range. I agree it makes no sense to charge until the BMS cuts off but you may need to get into a higher voltage range to get balancing to kick in. I generally only charge to 80-90% but I do 'top off' from time to time to sync my SOC meter and get a bit of balancing done in the process.

@EmilyAndClark Жыл бұрын

Yes it turned out it has a slow balance circuit

@katiekumcgil Жыл бұрын

the best dischager and charger tester is the cycle analyst version 3 you connect 2 x 4-500 amp current shunts and 2 x 2400watt bar heaters ,or huge load dump resistors

@katiekumcgil Жыл бұрын

there was nothing i could find ready made online that could properly pressure test the big ebike batteries

@TrevorStruthers 8 ай бұрын

Disassembling one of these topless on the railings of a boat, probably wasn't what they had in mind, but meh...you did it! Edit: I added the topless.

@mememe5231 Жыл бұрын

Great video! Shouldn’t that BMS have slowed or stoped the cells that were charging faster to maintain balance? Also after charging would the not equalize on their own after a few minutes? Thank you for your effort!

@EmilyAndClark Жыл бұрын

It turns out that the BMS has a slow cell balancer. I'd have had to have held the cells into the hockey stick for a LONG time to balance.

@katiekumcgil Жыл бұрын

this type of bms needs very high balancing currents so it charges as fast as it can so the battery preforms as a single cell or unit

@tomscolick3593 Жыл бұрын

im not a boat man but i use lifepro batterys for my solar home system its nice to see you do the tare down and run the test i also build battery pack with bms 12 up to 27 volt batterys i thank the lifepro with bms is theonly way to go save you lots money from replacements i have a lifepro battery i built that has 32 32650 battery per cell there is4 cells of 32 battery that run some of the appiance in my house thanks for your informatoin on the lifepro battery

@EmilyAndClark Жыл бұрын

Have you seen this to protect your Li investment from low current overcharge? www.emilyandclarksadventure.com/bbms

@TAlan-el2on 11 ай бұрын

Good job

@EmilyAndClark 11 ай бұрын

Thanks

@williamd.newsome5199 2 ай бұрын

Interesting video. A curiosity question. You appear to be using a Klein CL220 meter during this video. You were measuring DC amperage with the clamp on feature. Didn't know that you could read DC amperage other than through a series connection.

@EmilyAndClark 2 ай бұрын

Yes you can with this meter. It's in our Amazon store if you want to know the model number. kzfaq.info/get/bejne/jZ6Gf6iF3s3Zn3k.html

@bobcaverly 7 ай бұрын

Thanks for your reviews - I've learned a lot from them! I wound up going with the REDODO 410Ah batteries to replace my previous 6 x 6v golf cart house bank. I could only fit 2 batteries in the available space so that was my biggest bang for the buck! Curious if yu have any plans to review that version of the REDODO batteries - or have any other opinions about them?

@EmilyAndClark 7 ай бұрын

My review of that battery comes out Saturday. Mine had issues and I didn't like the wiring inside but it's all in the review. Subscribe.

@s.mendez7160 7 ай бұрын

Hey Clark, great to see you reviewing batteries. Would like to see you test the BMS thermal cut out sensors. Heat gun for high temp, and put the low temp sensor in ice water, and confirm the BMS FET's switch off. Would love to see a video of you doing manual balancing with your precision resistor. Thanks again!

@EmilyAndClark 7 ай бұрын

I think the manual balance video would be important and I have a badly balanced battery here. I did the thermal test in an earlier review. The Elefast I think. If the unit has Bluetooth there is no sense testing that as I can see the temperature on the phone. And the units without Bluetooth tend to just have a high temp bimetallic switch. They tend to be reliable

@cleversolarpower 5 ай бұрын

'The air came right from China' So I'm not the only one thinking this while opening packages haha.

@lenwhatever4187 Жыл бұрын

Adding to what you said about cold protection.... having my only power source shut off because it is too cold.... not good. Some RV heaters and all diesel heaters (except stoves) require power. There are likely other things that require power that might be life saving (even a radio). So insulation and a small heater may pull some power from a battery but probably not much and if the battery is in daily use, it probably only needs the insulation to stay warm enough, so the heater wouldn't be doing anything most of the time even when the air is below freezing. I do wonder though, if the insulation could, in warmer climates cause over heating for heavy users. E-cars run cooling fluid through the battery compartment for example. I am thinking of some of these boats with a watermaker, washing machine and induction hobs. Ie people who expect a land based home on the water (and in aus also are required to seal their battery compartment). I personally think it's silly, but then where do you put all these things in a 30ft hull? (actually ours is 29) Even without all those things, our small "cottage on the waterfront" is technologically advanced compared to a land home of not very many years ago. Electric is the new nice but diesel, propane, butane, and other carbon fuels are better (smaller, cheaper, redundant, etc.) ,at the high load jobs they do. Until fabric solar panels that I can use for sails and still last years at a good price come out, there is a limit to what one can power from the Sun on a small boat. (even the big catamaran covered with solar panels has a hard time)

@EmilyAndClark Жыл бұрын

Yep Len. One thing. It's only charging below freezing that really harms li. You can discharge them. And if you had a BankManager controlled hybrid battery system you would always have the lead there.

@rv10flyer84 7 ай бұрын

Add a Renogy 200aH 12V to the board when you have time. Thank you for your excellent videos.

@EmilyAndClark 7 ай бұрын

That process starts for us when a battery manufacturer contacts us with the offer of a review battery. For them it often starts from someone like you suggesting our channel to them. Balls in your court

@brentperry6301 Жыл бұрын

Clark, I love your channel - if you would like to understand the nuances of lithium I would be happy to spend some time with you.

@closertothetruth9209 Жыл бұрын

im looking forward to seeing graphene batteries, they say they going to make them here in Australia, supposably graphene holds more power and charges faster.

@EmilyAndClark Жыл бұрын

Every new tech is better in the reports. Seldom do they make the impact that Lifepo4 did. I find for off-grid applications where weight is t critical LiFePO4 is quite useful. Lead is like a computer from the 90s. You always wanted just a bit more out of it. LiFePO4 feels like a computer from 2010. Perfectly capable of doing the job.

@WilliamAArnett Жыл бұрын

I would like to see you run your analysis on one of the high end batteries like Victron for comparison.

@EmilyAndClark Жыл бұрын

If you have an in with Victron and they send me one I'm game.

@Sting_is_Glowing 8 ай бұрын

What BMS is the battery using?

@haydenwatson7987 Жыл бұрын

I have two Basen Green 460Ah batteries which are built in an 8D case and it would be interested to see you do a tear-down on it. 460Ah in an 8D makes for a lot more Ah / cubic-in than is the Redodo. They cost me $1003 which comes out to $2.18/Ah which is much less than the $3.25/Ah on the Redodo. I had $70 shipping, and it took a couple of months to get to the US from China. FYI, these batteries have the 200A JBD BMS with Bluetooth. This BMS has thermal protection that shuts off charging at whatever temperature you set it to in the APP. I set mine to shut off charging at 5ºC. The cells are listed at EVE 230Ah in a 2p4s format.

@EmilyAndClark Жыл бұрын

Seems like a good battery. I don't have the budget to actually buy batteries for these videos but if you have a contact there and they would like to be in a video I'd love to have a look. Our last battery review video got like 120k views. I really like getting everything under one good BMS and not doing a bunch of parallel external connections.

@Hookmodo 11 ай бұрын

Hi Clark, what bench power supply are you using to act as the charger in these tests? Seen it in several videos now and it looks like a nice compact unit. Thanks!

@EmilyAndClark 11 ай бұрын

I'll have Emily put a link to it in our Amazon store listed in the description. Check back in a couple of days. It's a buck-boost converter with a really nice screen It's limited to 5 amps but really a lot more useful than you would think.

@Hookmodo 11 ай бұрын

@@EmilyAndClark Thank you! Hope all is well!

@sccobyste Жыл бұрын

Would be good if you can go through a tutorial on a 100ah battery and a BMS that has 50amp continuous use etc as I’ve just bought a 400ah battery and it says it’s got a 100amp continuous use BMS so not sure it will power my 3000w inverter as the max amp requirement is 230amps

@EmilyAndClark Жыл бұрын

No you shouldn't try to draw more than 100ah from your battery. It will power it fine, you just can't draw more than about 10 amps 120v through it without your BMS getting hot and shutting down.

@abelincoln3261 6 ай бұрын

Oh yeah I see what you mean that's one hot battery. I like the way she lays flat and shows off her power poles...oh my don't get me started... Whoooser..that one hot battery! 😅

@whosnextrealestate 9 ай бұрын

can you do the 410 ah redodo please!!!!

@Clifforddoltran Жыл бұрын

is it possible to charge a 36v lithium Iron Phosphate battery of my marine 12v alternator (trolling motor)?

@EmilyAndClark Жыл бұрын

Sure, though trolling motors don't produce much power. You could do it cheaply with a boost converter. Next Saturday's video will be all about boost converters. Though for a different application.

@jasonbrooks4996 Жыл бұрын

What AWG wires/cables would be suited for this battery and what is a good length to have the power cables so the wires/lugs/battery terminals don't heat up to dangerous levels?

@EmilyAndClark Жыл бұрын

I did this series just for you. ELECTRICITY ON BOATS - Clark's Full Masterclass: kzfaq.info/sun/PLsT7_jPsZM5ogT6or244F49-Gy7pYFV7V You will especially like the second video I expect As for length, it will make more sense after watching these but as short as possible.

@jasonbrooks4996 Жыл бұрын

@@EmilyAndClark Fantastic. Thank you 💡

@justinschwartz1433 Жыл бұрын

Thank for the great video. It would be great to get the tolerances of the devices and instruments being used (i.e. 1% or 5% resistor tolerance, etc.) to better understand the level of error between each measurement.

@EmilyAndClark Жыл бұрын

Yes. But using the same resistor on each test kinda cancels out error. My fingers on the probe ends likely caused loads of error. As per the disclaimer on screen title

@justinschwartz1433 Жыл бұрын

@@EmilyAndClark Thanks for the reply. However, not necessarily as resistance will vary with temp of the element after each measure or/and ambient and length of average measurements. No worries not looking for additional details or methods taken. all acceptable I guess I getting lab environment nerdy. all good!

@EmilyAndClark Жыл бұрын

Great point. I didn't consider heat. In the future I'll "pre warm" it on the last cell first.

@RD-qn4gt 11 ай бұрын

Now, what about bulk charging Lithium? My charge controller has one setting for Volts. Do I set it at 13.6? or 14.4?

@EmilyAndClark 11 ай бұрын

Really... Neither. BankManager!

@wsurfer2147 Жыл бұрын

Would you please do a tear down on the TimeUSB 220ah 12.8v battery. Price @ $550 , it is about 20cents /wh !!

@EmilyAndClark Жыл бұрын

You should send them a note suggesting they contact me. I'll send them one myself. I like that the case can be opened easily but I don't like that it's metal. Though painted metal should last well enough as long as salt water is kept away from the batteries.

@wilfriedhafner6551 10 ай бұрын

hi, can you please add a link to the "Load Battery Discharge Tester" you used ? (or another equivalent one)

@EmilyAndClark 10 ай бұрын

I started the process of putting a link to it in our Amazon store. Check in a day or so. Should be in the electrical tools or battery (or both) sections

@EmilyAndClark 10 ай бұрын

It's there now

@katiekumcgil Жыл бұрын

the batteries i make now for high end ebikes with dc currents of up to 850 amps continuous ,use 3m Novac dilectric fluid ,and immersion cooling,cells now never go higher than a few degrees under full load ,.and can charge the battery at 80 amps continuous,and have advantage of never being able to catch fire

@katiekumcgil Жыл бұрын

I think you could just drill a hole in that 12 volt box and fill it up with Novec fluid would make battery last years longer

@beaniril8870 Жыл бұрын

Can I directly connect a solar panel to positive and negative bus bars instead of directly to the batteries?

@EmilyAndClark Жыл бұрын

Yes. Last week's video showed that more clearly kzfaq.info/get/bejne/jtZmptacma3ZpZc.html

@adriancross8067 9 ай бұрын

Thanks for this.. all videos help make choices.. my issue i have a diy set up in shed at moment my EPEEVER 30 amp charge controller is at a 14.6 i believe highest charge rate Set to the lead acid batteries i have at moment ..i can change charge controller to lithium battery will that be automatically be lower charge to go into the lithium to profect it as you state DONT GO UP TO 14.6 with lithium ? As im a semi novice leaning ... can you explain easy terms what im meant to be doing for the best .. im hoping to get 200ah lithium ..cheers

@EmilyAndClark 9 ай бұрын

Sad to say there is no safe way to charge li to a voltage. Li is just too fragile and there are no Li chargers that have a Li setting that won't abuse your new li batteries. I developed something called the BankManager that charges li right. You get to keep your lead batteries, and you get to keep your old charge controllers. www.emilyandclarksadventure.com/bbms

@adriancross8067 9 ай бұрын

Im talking about any 200ah lithium battery what charge rate should that be set at so dont cook the lithium

@EmilyAndClark 9 ай бұрын

It's not that simple

@ferrelljohns545 10 ай бұрын

You said that your fingers might have touched the probe tips, my Fluke will show my heart beats when in R mode.

@uhjyuff2095 Жыл бұрын

the bms balancer circuit on those batteries probably sucks. The way I would test a BMS for balancing is I would take the heatsink off and use a temp sensor gun over the balancing resistors on the pcb to see if they are activating. Good job getting in there and top balancing your cells.

@EmilyAndClark Жыл бұрын

Turns out it does have one but a real low current one

@EmilyAndClark Жыл бұрын

With the BankManager charging it will never balance unless you manually force the voltage up. But if you stay out of the hockey stick it might never matter

@uhjyuff2095 Жыл бұрын

@@EmilyAndClark thats the thing, your pack was out of balance so I would assume even though you think your cells are out of the hockey stick area one or two cells are higher than the other cells, that is why cell balancing is great. Try testing a bluetooth capable lithium battery pack bms so then you can confirm your bank manager is not overcharging ANY of the cells as intended.

@martinluther9983 11 ай бұрын

Sepperate cables bonded together create less heat than one solid cable and less voltage drop and the required cross sectional size can be reduced !

@marscan1 Жыл бұрын

Clark; What about hi and low temperature shutdown?

@EmilyAndClark Жыл бұрын

I talked that in the video

@GuyIncognito764 Жыл бұрын

I believe it's common with all these Chinese batteries to have the BMS top balance cells (one at a time) when they hit some high cell voltage. I know you stated you didn't think that was the case here, and it may not be. However, I've also read these balancers use a really low current like 20mA so it's possible you wouldn't notice that. The idea (I think) is that they'd balance over many charges and keep things generally in charge. They should be balancing at something like C/50 IMO, but maybe I'm missing something important.

@EmilyAndClark Жыл бұрын

You are right. There is a balancer in the BMS. But the BankManager doesn't take the battery up where the voltages split. One could occasionally hold them at high voltage but once balanced they tend to stay that way.

@haroldmcdermott515 3 ай бұрын

I've got 4 12 200ah in series 48v and they them in part of the house I don't heat so temperatures at times can't get down to -0° to -5 at times so I just cover the with at eclectic blanket 100 watts on high but have it set to level 4 so about 40 watts and that keeps them at +15° celsius, I've not gotten around to building an insulated box yet but I'm sure 10 watts would keep them warm.

@haroldmcdermott515 3 ай бұрын

Case standard case built for many different companies and perhaps different cell sizes, also foam Installation and help with shock if it should get dropped so that's good.

@jeffgriglack9624 Жыл бұрын

As far as protecting the battery when it gets too cold, can't you just disconnect it from the charger over the winter? My understanding, with LiFePO batteries, is that the cold alone doesn't harm them, but charging when it is cold does. I ask this because I am up north where we pull our boats out for the winter.

@EmilyAndClark Жыл бұрын

You are correct. But if you wish to leave systems running and have solar panels for example.....