18650 Cell Fusing

Рет қаралды 68,790

Күн бұрын

fuse wire i currently use - ebay.to/2xlHMmZ
Copper winding wire on eBay
goo.gl/7d2NZb
Older Videos with fuses
• 80 cells versus 1 faul...
• Starting to test fuse ...
Average Joe's Fuse test - All the way in America
• Diy Tesla Powerwall ep...
DIY Tech & Repairs
• Spot weld fuse wire fo...
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Thanks for tuning in as always!
Pete

Пікірлер: 200

@tomschultz4321 10 ай бұрын

Been studying by your videos for 3 years now finally at hands-on!

@HBPowerwall 10 ай бұрын

NICE, enjoy the experience and stay safe

@fabbrodiroma8270 5 жыл бұрын

With your help I did it...My first power wall is on .You are great teacher :)

@HBPowerwall 5 жыл бұрын

Be sure to share so we can all learn more from our mistakes/successes

@tonyb.4824 6 жыл бұрын

Great video Pete! I'm a retired sparky and your crimps should be done with your hydraulic press. On your cells, I would stuff some short cuttings from the cable type that you run along the cell to fill any voids prior to crimping. I'm not a fan of making lugs with pipe, too many variables and inconsistencies. I would check all terminations monthly with your thermal gun and check all mechanical connections at least annually.

@HBPowerwall 6 жыл бұрын

Didn't think about putting 'spare' copper in their - great idea - Pipe is defiantly a choice when that's all you have I guess. Definitely agree with regular checks of any electrical setup like mine!!!

@FrankEdavidson 6 жыл бұрын

Contact the cable manufacturer for recommended crimp barrel size and crimp tooling. Companies like Glenair will do a crimp match and test though they are more for mil-spec, aerospace.

@darrenbenson2606 6 жыл бұрын

Thanks for the cell data on the forum. You have made my life a lot easier

@HBPowerwall 6 жыл бұрын

Thank you for using it, but i can't take the credit so many others have been involved

@OnlyTomboller 6 жыл бұрын

Hi pete, just a quick note on crimping. Do your first crimp then open the tool enough so you can turn it about 40 degrees then crimp again. Your crimps will look neater and have better confections. No more loosy goosy crimps mate.

@timothycampbell4705 6 жыл бұрын

Great idea copper tubing even to make end connections.

@jasonflt 6 жыл бұрын

i followed what you did and used 24 gage wire. works great for my 16.8 volt multi pack.

@HBPowerwall 6 жыл бұрын

Thanks for letting us know & sharing what you use.

@GadgetAddict 6 жыл бұрын

That's a really good idea about using copper pipe!

@ursodermatt8809 6 жыл бұрын

but you need the right size copper pipe. for 35mm2 you need 9.5mm diameter copper pipe, for 50mm2 it is 12mm diameter. that was the reason some of hbpowerwalls crimps slipped, there was not enough copper wiring inside. you can also fill in, with offcuts of wire strands. if a crimp is properly crimped and you cut it apart with a hacksaw, it will be one solid copper bar. it is all cold welded together.

@levik1832 6 жыл бұрын

Really enjoying this series of videos, Pete. Can't wait until the next one. I do have one question though. When are you going to post your "Building my new battery shed, part 1" video? :P Cheers!

@HBPowerwall 6 жыл бұрын

When my wife says - Sure Peet spend more money! lol Don't tell anyone but already buying some of the bigger stuff i need (want) to lay it out well :)

@stevemcgowan3017 5 жыл бұрын

hi hb can you explain how you connected your 18650 cells I only have 14s50 set up for ebike but I like the way you hang them up by the bus bar so u fuse the positive side only I have some .15 copper fuse wire seems thin and wont hold my busbar how do u solder busbar to pack

@bostjantrancar9605 6 жыл бұрын

Smart how you put fuses on the negative side.... 👍

@steakbread 4 жыл бұрын

Good stuff. I've taken apart a 10S13P pack and rearranging the cells. I will end up with 6 10S2P and 1 10S1P packs. I have already spot welded the packs together. Now I'm trying to decide the best way to connect them all in parallel using the original BMS (charge only). Any tips? This my first battery build.

@mmmk1414 4 жыл бұрын

Can't i use a 5 amp fuse wire instead of this 30awg wire? Will it melt when soldiering it?

@chriswesley594 6 жыл бұрын

Great stuff. Real-world wisdom. Thanks!

@HBPowerwall 6 жыл бұрын

I try :) and sometimes get it wrong :)

@lambertricalde1218 6 жыл бұрын

Do you have a link to all the items you use in you power wall? Like monitor system, charging system, and the big breaker looking box in there? I'm interested ever since I saw your home run off the power in there for I beleive was 64 hours

@Home_made_ch 4 жыл бұрын

Can you advise, if I am making battery pack with cells max discharge current 13a, with 4*cells in parallel,wich really I give me 20ah battery pack, with constance discharge up to 40A.so I want to use fuse wire instead of nickel strips. Nickel strip will handle about 5a only, so need to spotweld one more on top, but nickel to nickel not get welded properly. So would be 10A fuse wire do job, or that is not good ( battery pack for ebike)

@AveRage_Joe 6 жыл бұрын

Great video again!! Aaaaaaand Thanks for the plug!!!😃👍

@HBPowerwall 6 жыл бұрын

Mate you and Daniel have the stuff people need to see :)

@ponkuna 5 жыл бұрын

I am following all your videos. Thx.One question. I made a 4s 10p power pack. Question is charging this pack from my solar panel. I am charging from the battery outlet of my PMW charge controller. The controller has a default max. charging the battery of 14.4V. So my battery pack get only 14.4V and not more than that. I know 4s can go up to 16.8v. My question is do I need to charge after my controller or straight from my 12V solar panel with give a max of 18V at the peak time? Thx.

@laspeeders17 6 жыл бұрын

Just a simple question How fast do u charge your packs (in Amps)?

@lnxpro 6 жыл бұрын

I couldn't stop staring at the skewed battery shelf.... Irritated the crap out of my OCD. lol.

@HBPowerwall 6 жыл бұрын

yeh saw that was just the camera angle

@williwonti 6 жыл бұрын

Yeah the shelf isn't skewed, the blue stacks next to it are leaning.

@jeffmunoz218 6 жыл бұрын

I think fusing is great, you more out of your batteries but you can simply add aluminum foil on them to sync with your copper wire. It would be easier to detach, if in case one goes bad.

@reluctantrider1932 6 жыл бұрын

Did you ever recall just what the wire was called? I tried the link but unless I did something wrong it took me to all the parts used and not knowing what the wire is called, I couldn't discern what to buy. I understand that we need to find what works for us individually but FWIW, I'm doing a 48v ebike battery, that is if you have any additional comments on that/wire amperage and such. Thanks for the video, it was very helpful.

@meergaming8372 4 жыл бұрын

I really like your video and you make good batteries

@neckdeepprojects8034 Жыл бұрын

If you crimp you really dont NEED TO solder, but it's ok to do both. In my line of work we call that potting the connection. A CORRECT CRIMP made with the appropriate tool/die is actually a cold welding process and potting adds a little better/lower resistance connection, and corrosion protection. if you weigh that against time and money there isnt much reason to pot those terminals.

@usmanzaheer4691 5 жыл бұрын

Thank you for sharing your knowledge and experiences with all of us... Great Job Sir.

@HBPowerwall 5 жыл бұрын

I try!

@xxplosiv88 6 жыл бұрын

Hey Pete, thanks for the awesome videos. I'm a bit of a noob, so this may be a really dumb question but... In terms of the wiring, the entire positive side of the cell pack is common (wired together), right? And same with the negative side? Do you prefer to do your packs entirely in parallel, then add additional packs in series to get your desired voltage? I'm pretty confused as to the series wiring part, and how it all connects up to get your desired voltage. If you could help explain this it would really help. Cheers!

@MrNurseinTExas 5 жыл бұрын

Several factors play in this.... 1) Battery requirements and 2) expandability??.................First, using your load; you calculate your required voltage. TAKE required voltage and divide by voltage per individual cell ( usually 3.6v operation , 4.2v charged)... 2 Series bumps it up to 8V... 3Series up to 12V....and keep going until you reach your desired voltage..... The PARALLEL decides your running energy used per unit of time. Most of these cells have a maximum of 3400maH..... Again, what does your load use? 500amps per hour? 20amps per hour?..... 3.4Amps per hour?? If your system only draws 3.4 amps and you only need it to run for 1 hour, then all you need is 1 battery in parallel.

@AndreyGarciaG 6 жыл бұрын

Hi, its me again after a very long time give up building packs. question for the connection, why not use MC4 connector for solar panels ? isnt it much easier ?

@laspeeders17 6 жыл бұрын

I was thinking that as well but it can only handle 30A of continuous current

@giuseppelamanna109 6 жыл бұрын

Hi, when you build your packs, do you consider the internal resistance of each cell?

@allexandruprroca6713 4 жыл бұрын

INTERESTED .

@eraldsh8842 3 жыл бұрын

i have some psu cables rated at 20 awg. thats the rating of the cable right? what about a single strand of wire inside of it? what awg they might have?

@MrSummitville 3 жыл бұрын

Copper Wire is NOT "Fuse" wire.

@adventurious1234 6 жыл бұрын

nice...keepin it real...thanks for the links...!!!

@kyle18714 4 жыл бұрын

I noticed on your Amazon store?...you sold 30awg bare copper bus wire... so I was just wondering...do you think I should be ok if I wanted to use 32awg bare copper bus wire?...instead of 28awg?...thanks

@MrSummitville 3 жыл бұрын

Copper Wire is NOT "Fuse" wire.

@daneclarke3281 6 жыл бұрын

Great vid

@olive2255 4 жыл бұрын

Am new to building battery please how can i setup 300 cells to get 12V to power my inverter

@dejayrezme8617 6 жыл бұрын

I think you can just buy fuse wire and use an online calculator to calculate the right length / thickness for the max amps you want to allow. Afaik in the UK for old houses they have the fuse wire instead of breakers you can flip back, so they still sell fuse wire for that.

@HBPowerwall 6 жыл бұрын

I tried that in some of my earlier tests and the fuse blew in my multimeter before the 5a AC fuse wire

@battery_solar_ev 6 жыл бұрын

also on amazon 28 AWG Tinned Copper Wire, Buss Wire

@HBPowerwall 6 жыл бұрын

Thank for that mate

@chronicalcultivation 4 ай бұрын

I'm in the process of planning to rebuild my scooter battery to be safer, and finding your videos very useful. Wouldn't mind picking your brain if you have a minute to chat

@chronicalcultivation 4 ай бұрын

As far as the spot welding I was thinking of welding tabs into the cells and then soldering the fuses to the tabs

@professorprodromal4419 5 жыл бұрын

what awg size wire did you use for the fuse? the amazon page has several different sizes.

@professorprodromal4419 5 жыл бұрын

Here is a page about it: www.altestore.com/howto/recommended-inverter-cables-sizing-and-breakers-or-fuses-a62/

@hersheykiss9500 3 жыл бұрын

what are the dangers of forgoing the fuse? the nickel-strip method goes without them...

@Toad_Hugger 6 жыл бұрын

Using the crimper and solder should help make a more solid connection. So unless you're putting a lot of strain on that connection, it should be fine. Also, no soldering and having an "improper" crimp can lead to the connector being a lot more prone to corrosion. That's how I understand at least.

@HBPowerwall 6 жыл бұрын

I think i have it sorted but the old interwebs makes me second guess my self all the time :)

@Toad_Hugger 6 жыл бұрын

HBPowerwall Aye, you seem fine. Good luck out there!

@williwonti 6 жыл бұрын

If you're worried about corrosion couldn't you just spray some conformal coating on the exposed bits?

@Toad_Hugger 6 жыл бұрын

williwonti Nah. The conformal coating would wear away after a bit. It's real good for protecting things that don't move around much, but it wouldn't work well on a connector that's plugged and unplugged alot like this one probably will be.

@LordEzequiel 5 жыл бұрын

Greeting, i'm wondering... What about using the PolySwitch resettable fuse protection? Can you use them instead of fuse wire ? Because they are reusable. Just wonderinf if we can use them instead.

@HBPowerwall 5 жыл бұрын

Definitely but I wouldn't - if there is a problem you'll find it harder to work out where it is if it keeps resetting. Issues need to be addressed not worked around.

@LordEzequiel 5 жыл бұрын

HBPowerwall - Yeah good point . Thank you for your time!

@plebetopro5786 6 жыл бұрын

I wouldn't use the copper pipe, as pipe copper is comparitivly shit for purity, which likely will increase the resistance, and increase the likely hood of failure. Would be a neat thing to test.

@JoseGarcia-px9xj 4 жыл бұрын

I want to build a 128s14p battery pack, there's a lot of cell, do you know a way(calculator) to make all 14p blocks the same capacity

@HBPowerwall 4 жыл бұрын

Yep - secondlifestorage.com/repackr.php

@leroylucas961 5 жыл бұрын

I would like to bring to light in the power wall cammuniy that maybe we should look at adding thermol fuses to the packs

@HBPowerwall 5 жыл бұрын

Been tried - if you have a bad cell that heats up you want it disconnected and not used.. not have the fuse thermally reset. Also adds a bit to the build price. Furthermore you can't see when they have failed/triped

@leroylucas961 5 жыл бұрын

@@HBPowerwall thermol fuse will fuse and not rest you would only need to test a few of them most electronics that heat up have them in. in case all els fails to control or protect I'll soon de testing in my cell groups wen I get done with testing cell

@tedc3895 4 жыл бұрын

What would happen it the battery pack was in an air tight metal box...????? Just thinking???? Explosion?????

@HBPowerwall 4 жыл бұрын

Hand Grenade stuff - needs to be vented

@graceho99 4 жыл бұрын

You never gave info on the fuse wire. I could not find the presumably given amazon link.

@HBPowerwall 4 жыл бұрын

I'll ad it now, sorry back in the day I had a lot to learn ebay.to/2xlHMmZ

@graceho99 4 жыл бұрын

HBPowerwall Thanks, appreciate it.

@Dutch_off_grid_homesteading 2 жыл бұрын

heya yes fuses are a good thing but why use fases? I still will problely found out as I watch more vlog's of yours

@DragonsREpic 6 жыл бұрын

So i have been messing around with 18650s off and on for about 2 years and as far as fusing, does anyone have a ACCURATE blown ratings for different wire gages?

@MrNurseinTExas 5 жыл бұрын

Its a simple google search away ( I know, mind-boggling)... SEARCH: copper wire fuse rating

@FrankEdavidson 6 жыл бұрын

What are the battery packs for eventually?

@HBPowerwall 6 жыл бұрын

They run my house 24/7 :)

@dgb5820 2 жыл бұрын

The best part are your experience and links

@HBPowerwall 2 жыл бұрын

Thank-You

@joeprimal2044 6 жыл бұрын

I've tried the copper pipe thing and in my opinion it's not worth the trouble. It's a lot of work and the end result is meeh.

@HBPowerwall 6 жыл бұрын

but if you disregard the time and effort was it cheaper?

@joeprimal2044 6 жыл бұрын

Probably. I'm not sure since I had the copper pipe laying around for years. But I think it's a huge mistake in life to disregard time. Time is the most limited resource we have. When it's gone it's gone and we can't earn or buy anymore. Money? Who knows. I might win the lottery today. You never know about money.

@istvanszilagyi5773 5 ай бұрын

Hi, isn't it a problem to use different cells in one package?

@HBPowerwall 5 ай бұрын

Kinda yes, but recycling isn't a perfect art...

@burnzy56469 6 жыл бұрын

Could I please have a link to the bus wire thanks mate

@HBPowerwall 6 жыл бұрын

amzn.to/2qRQL8H 28awg works for many some use as small as 32awg

@sspence65 6 жыл бұрын

I have been squashing copper pipe into terminals in my solar off grid battery installs for years. I crimp (with a hammer) then solder, the heat shrink.

@HBPowerwall 6 жыл бұрын

all it has to do is work, but my far the most common thing i've heard is don't solder the lugs

@sspence65 6 жыл бұрын

HBPowerwall 30 years of installing solar, I'll never make a battery cable without soldering it.

@e36matze72 5 жыл бұрын

Hey dude, how do you load a 18650pack like in this Video? Or is it just for one single use?

@HBPowerwall 5 жыл бұрын

I recharge them with solar used over and over as many times as possilbe

@e36matze72 5 жыл бұрын

HBPowerwall : Do you have a example for a usecase ?

@rajgj7041 5 жыл бұрын

Shuld i fuse both terminals is it necessary?

@HBPowerwall 5 жыл бұрын

Yes & NO - I don't as fuses break real easy so only positive for me - how ever many do

@sspence65 6 жыл бұрын

use a flame to burn off the enamel coating, or a piece of sandpaper.

@HBPowerwall 6 жыл бұрын

yes both work well - but use tinned copper wire these days much better on the soldering iron tips too

@MrBrettStar 6 жыл бұрын

Brett from the interwebs here, I thought that hole was used to feed solder in?

@HBPowerwall 6 жыл бұрын

Brett from the interwebs, go back to your room please... lol

@thebossut 6 жыл бұрын

So last night I found a 3 Hot to the touch cells, its most likely just the one cell but the other 2 were low as well, the other 2 could have been from being next to it while charging as I charge 10 at a time on a REAL iMax charger at 6 amp. These cells are not all the same exact voltage but are normally close with in .15 mv. So I wonder if I caused this one very hot cell, that was at 4.08 the other 2 were 4.11 and 4.13 while the rest of the cells were at 4.17. the other 2 cooled off pretty quickly but the one stayed hot for awhile, surprising it did not drop anymore in voltage either. I am not going to risk it and discharge the 3 cells and then drop for recycling. anyone have any other suggestions if this was a bad cell or how to correctly identify ?

@MrNurseinTExas 5 жыл бұрын

Cells have a specific C rating.... This determines how quickly they can be charged and discharged. An additional note is that if you are using OLDER/USED cells, they cannot take a charge/discharge as well as they did brand new, which results in waste = heat. KZfaqr JehuGarcia gives a great thesis/understanding on this topic.

@christopherstaples6758 6 жыл бұрын

CD spot welder , just need some capacitors and a relay , pick up from the scrap yard

@HBPowerwall 6 жыл бұрын

I'm not that smart :)

@phizicks 6 жыл бұрын

So professional, just in case ABC is still watching ;) ey...

@HBPowerwall 6 жыл бұрын

That ship has sailed - on and up

@laspeeders17 6 жыл бұрын

HBPowerwall can u tell us how fast u charge them

@TheZigZiggy 6 жыл бұрын

What do you think about these 4000, 5000, 6000, 9800, and even 9900mAh 18650's now available on eBay for less than $1 each? Are they legitimate, or just blowing smoke?

@Toad_Hugger 6 жыл бұрын

TheZigZiggy Nah, I couldn't imagine those being legitimate. I think the max at the moment that we've got is about 2500 to 3000, and they definitely aren't 1$, to my knowledge. I could be wrong though. You can look it up. Probably won't take long to find an answer.

@HBPowerwall 6 жыл бұрын

Next Video .....

@KingOfKYA 6 жыл бұрын

there all bs in all honesty the 2-3 cells are 3000ma at most. Thouse cheap no-name cells your luck if you get 500ma out of em and they degrade really quick to below 100

@TANK_The_Hammer 6 жыл бұрын

Jheau has already done a video covering those

@joeprimal2044 6 жыл бұрын

The cheap ones test out at about 1000mah. The best ones I've found in the budget range are the EBL which test about 2000mah and can be had for about $1.50.

@eskilr 6 жыл бұрын

what is that wire you used to connect the cell fuses to the main output? the heavy wire

@HBPowerwall 6 жыл бұрын

it is normal 240v house wire striped out and made into busbars - this video can help you on your way kzfaq.info/get/bejne/jraUfbV1mp24Z3U.html

@eskilr 6 жыл бұрын

Thank you so much, also what temperature should I solder at?

@HBPowerwall 6 жыл бұрын

Too many variables - I use a 40watt iron others use a 200w ambiant temp, materials soldered too all change the soldertemps

@eskilr 6 жыл бұрын

Thank you so much for your answer I really appreciate it

@eskilr 6 жыл бұрын

also could you please link me the fuse wire? there is no link in the top corner 2:41

@TravisWatson 6 жыл бұрын

I physically cringed when you shook the pack by the wire. I can't believe how strong that is with just the soldered connections!

@HBPowerwall 6 жыл бұрын

Has to be strong... if that only had the fuse wire on it it would have been all over the floor ...

@Star_Forge_Pool 6 жыл бұрын

Get your hands on some fuses out of the old 240/740 cars. You can pull the strip right of the fuse. Might work well.

@HBPowerwall 6 жыл бұрын

240/740 cars? sorry don't follow

@Star_Forge_Pool 6 жыл бұрын

Volvo fuses, thinking out loud, they are shaped differently than normal car fuses. www.ipdusa.com/uploads/images_products_slideshow/fullsize_14565.jpg

@matthew164 3 жыл бұрын

U must have been using a higher voltage for your test, amps change depending on the voltage ur using.

@HBPowerwall 3 жыл бұрын

Possilbe

@joeprimal2044 6 жыл бұрын

The wire is called 'buss wire'.

@sspence65 6 жыл бұрын

soldering on the cells creates damage in the cells, reducing cell life.

@HBPowerwall 6 жыл бұрын

it certainly doesn't help but given the cells are already at the end of their 'natural live' it's cheap and easy and scalable anywhere in the world. Most don't have access to a spotwelder

@L3N1NVEVO 3 жыл бұрын

And the sky is blue

@james10739 6 жыл бұрын

ya those hydraulic crimps are surprisingly cheap like $25 on ebay i have one in my watching cart

@HBPowerwall 6 жыл бұрын

Yep, don't cost much at all worth the investment if you're going to use them a bit.

@TANK_The_Hammer 6 жыл бұрын

So 5-6 amps or 19-20 amps for the fuse

@HBPowerwall 6 жыл бұрын

Good question.. my test was 5-6, he was well more but all you have to do is short circuit one cell if the fuse wire goes means it's good enough if you ask me

@TANK_The_Hammer 6 жыл бұрын

HBPowerwall I was just curious working on a design to use the micro auto fuses that go as low as 0.5 amps and just use contacts Vs spot welding or soldering a ton of fuse wire

@ramesh6221 6 жыл бұрын

Where is the link to the fuse wire on Amazon?

@HBPowerwall 6 жыл бұрын

amzn.to/2v25vHc that is 20 awg or you could go smaller if you wanted depending on your use

@ramesh6221 6 жыл бұрын

HBPowerwall Thanks buddy. Also I wanted to ask you whether we can use the individual copper conductors taken out from a Cat6 network cable. Because that is also pure copper 23awg. Where we can draw nearly 4 - 5 Amps current

@HBPowerwall 6 жыл бұрын

you can use anything that works for your setup.

@JohnStark3D 6 жыл бұрын

So what's the cost for running a house with this setup?

@HBPowerwall 6 жыл бұрын

Full detailed costs of this project is linked in video description

@JohnStark3D 6 жыл бұрын

HBPowerwall Thanks I thought it would be less expensive, I'm starting to dig it to start to profit on with crypto currency BTW take a look on Solarcoin you can redeem 1solarcoin for 1MWh of solar electricity generation, it's about 19 cents now so it would help coinmarketcap.com/currencies/solarcoin/

@simplyfocus9937 4 жыл бұрын

Can you send me the link for the fuse wire

@HBPowerwall 4 жыл бұрын

ebay.to/2xlHMmZ

@simplyfocus9937 4 жыл бұрын

Thanks for your help. Why do use 80 cells instead of 100 cells.

@HBPowerwall 4 жыл бұрын

I use 200 theses days much better

@simplyfocus9937 4 жыл бұрын

@@HBPowerwall same wire and same 32 gauges fuses

@joeprimal2044 6 жыл бұрын

I've been having a weird problem with my batteries. I'm not build battery packs (yet) but just using the batteries loose in things. I have some cheap batteries ( about 1100 mwh ) and some better ones ( EBL at about 2100mah ). Every so often one of the better batteries turns up totally dead after charging. IDK if it's coincidence but it seems like every time it happens I'm charging it with one of the cheaper batteries. Anyone have any idea what the problem could be? Thanks.

@paulkennett 6 жыл бұрын

Could be that you're over charging and the pressure release valve at the + end of the cell has popped. Gernally speaking all the bad stuff happens when you charge to above 4.2V.

@joeprimal2044 6 жыл бұрын

hmm. Maybe. I'll check out the charger. Thanks.

@thebossut 6 жыл бұрын

I found Winding from a 12v DC computer fan of 80MM blow at about 6-7 Amps, I think thats a bit high ? why not use the Iron shaft vs the tip to melt the coating off, or hit with a lighter? I could use some pointers for anyone out there, I am looking to build a Cpap battery that can last 2-3 days. IRMA Proved why I needed a backup. Since I have about 200 18650's already just not sorted our discharged yet, I charged them up and was able to run 5v Fans and LED lights. What is the best way to test Amp Hour, My cpap pulls about 1amp with everything off. I was thinking of going 12 or 24 volts. I have buck / boost converters as well. I am still learning the ropes. I know charge up, let sit measure volts of cells, wait a few days measure again, discharge and dispose of the bad cells. I have the ebay special discharges. should I discharge at .5c roughly 1amp or 1c roughly 2 amp figuring the good cells are 2000+ mAh. the other thing I need to figure out is Balancing, I think i have a slight understanding but not fully yet. anyone up for the task of showing a n00blet computer / network tech the ropes ? Thanks for reading.

@tonyb.4824 6 жыл бұрын

As far as you C rate for testing, just pick a number and stick to it. 1,000 ma works good as the test won't take too long and it will also let you know if the battery will have any heating issues. I would probably just use a torch to burn off and coating on the wires. My plan is for wire on the negative terms and a 1 or 2 amp fuse on the positive sides like AverageJoe is doing. Your transformer will always eat up some of your power. If you can get your batteries constructed to where they can power your device directly, each charge will last longer. Don't worry about balancing yet, just leave your cells at about 3.8 volts until you build your packs. Hope this helps and good luck.

@thebossut 6 жыл бұрын

Tony, Thanks for the reply, I was looking at the Glass axle fuse as well. so the Resemed DC power supply I bought (DC/DC Converter 24V/90W) will take for input 12v | 13A or 24v | 6.5 A I want to say I tested it on the 14V and it had a low voltage cut off at 10v. for discharging the batteries whats the recommended way to get near accurate readings without breaking the wallet ?. looking forward to the replies.

@tonyb.4824 6 жыл бұрын

Well, lots of ways to get there. Lets assume you go with a 3S battery bank. That bank will have 3 packs of 60 cells each. 10 volt cut-out would be a hair over 3.3 volts per cell bank, which is good. You could put a BMS on each cell pack, just make sure they can handle the 13 amps that you will be taking out and putting back in to each pack. I would also look for ones that are adjustable on the top and bottom and set them at 3.3 v cut-out on the low end and about 4.1 volts on top. I would also wire in a cheap LCD volt meter to each cell pack just to keep an eye on things. It's a little easier to get parts at the higher voltage and lower amperage.

@thebossut 6 жыл бұрын

So would it be better to go 24 V then ? also note that I think that is 13 Amps Draw with all the features on, IE humidity control and heated hose, I will have these features off with passive humidity. I would need to test again as it was over a year ago when I started down this path but I am pretty sure the draw was 12v 1amp from the DC in side of the Converter. at that many cells I would need higher amp charge as that would only be about 216 mA per cell, or is my math wrong on that part ?

@tonyb.4824 6 жыл бұрын

In order: yes...huh?....it depends on your cell pack. I bet you know someone with basic electrical theory knowledge. I just don't have enough info to make accurate recommendations.

@MmeHyraelle 3 жыл бұрын

Would 30 awg bare copper wire work for this? If yes, well i have 18awg 16 strands wire laying around and following wiring charts ; www.calmont.com/wp-content/uploads/calmont-eng-wire-gauge.pdf The strands are 30awg.

@MrSummitville 3 жыл бұрын

Hell, NO !

@AClarke2007 2 жыл бұрын

Also some Fuse Wire blows faster than others.

@HBPowerwall 2 жыл бұрын

for sure

@JawadAhmadsahibzada 6 жыл бұрын

i use wire from ATX PSU cables ----- each single wire blows with 5 Amps

@HBPowerwall 6 жыл бұрын

great tip!

@JawadAhmadsahibzada 6 жыл бұрын

thanks

@mmmk1414 4 жыл бұрын

There is a dedicated wire to use as 5amp fuse, do you think it will work with this kinda project?

@JawadAhmadsahibzada 4 жыл бұрын

Mohammed Albayati yes

@nipuns7663 4 жыл бұрын

Average Joe got a much thicker wire by looking at his video

@martinroast2032 3 жыл бұрын

Id solder the lugs on quickly with oxy heat lug run solder in before it goes on the pack or is connected to any cells. and heres a tool for copper wire stripping, www.ftm-technologies.com/produit/fuchstar/?lang=en but if the gauge is to low it wont work, you could sand the enamel off with emery paper,. (armature winder completed trade in 2001, currently running an ebike conversion business.)

@DanBowkley 6 жыл бұрын

Whack it with a hammer? Actually that's an officially sanctioned method, albeit with the use of what I lovingly call the Caveman Crimper. Bang on it with a rock, no matter, it'll work. They can be found for MUCH cheaper, or probably just home built, but here's the "commercial" version: www.westmarine.com/buy/ancor--6-4-0-awg-heavy-duty-stainless-steel-lug-crimper--214080?recordNum=11

@memyselfandi6422 6 жыл бұрын

5:20 spot welders are dead simple to make, there's about a billion videos on youtube which demonstrate this.

@HBPowerwall 6 жыл бұрын

a billion - that's a bunch and a half. There are also a billion videos on how to bake a cake - but lets not go there :)

@meergaming8372 4 жыл бұрын

want your weight now number then I need to talk to you What is the name of the circuit board? Thank you

@dillonmccormick2511 4 жыл бұрын

You built a massive 3.7v pack? And you waited months to buy solar panels but didn’t hesitate to get a $50 crimper off eBay? I’m confused. Resell the crimper for $60.

@HBPowerwall 4 жыл бұрын

I think at this stage i had maybe 40 panels ?

@hayrettindemir1199 6 жыл бұрын

Ortalardaki pil bozulmalarında değişim yapmak için pil bloğunu tamamen parçalayıp yeniden toplamak yerine , blok üzerinde boş yedek (rezerve) pil hücreleri monte edilse , sigortası atanların yerine buralara ilveler yapılsa bloğun kullanım süresini artırır.Ancak yedekler de bittikten sonra tamir-değişime gidilebilir.

@MrSummitville 3 жыл бұрын

At time @0:59 you say, "... Hit it with a hammer ... *HOPEFULLY* that is good enough ...".

@HBPowerwall 3 жыл бұрын

Yeh, I'm not a engineer, i'm a guy in his shed trying his best to share what I've learnt/seen/repeating.. Also brain farting to get others to think and try do stuff safer.. Also the proper tool some times isn't available and you have to make do..

@MrSummitville 3 жыл бұрын

@@HBPowerwall If you don't have the correct tool, then purchase a cable with a pre-crimped terminal. Bad connections cause heat, and heat causes *FIRES* . It is always Safety 1st ... never safety 3rd ...