Correction to this video: Unfortunately, I was correct about questioning the low temp charging protection on the powerblock 170Ah.The BMS was not programmed correctly, and now it is. The low temp cut off works at 0 degrees C. Video table of contents: 3:58 Setup for capacity test for SOK battery 4:41 Capacity test results for 206Ah SOK battery 5:09 Setup for capacity test for Power Block 6:51 Capacity test results for 170Ah PowerBlock Battery Teardowns: SOK Battery: 7:12 Powerblock: 10:23 SOK VS Powerblock Conclusion: 16:24 Verus Budget DIY: 17:02 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

I just built a 400Ah 24v pack for about $.19/watt. It was not a trivial effort and took a very long time to arrive. The end result is great and the monetary cost was low - my time on the other hand was serious. Since I was in no hurry and wanted to learn - it was a good path to take.

Will, you really rock your new "Rockin Shop!" Great job with your new shop and even greater seeing you making new video content! Keep them coming!

Will, thank you for your enthusiasm, knowledge, honesty and thoroughness. You are becoming the consumer educator and lookout. Well done!

Another great, informative video young man. I'm 53 years old and a full time RV dweller. I've learned everything I now know about solar from you and your videos. I built my little 112 ah ,lithium iron phosphate system ,step by step from your videos. Lithium has changed my life! Lol. Thank you Will....

1st time that I have viewed your presentation and I've got to say you really know your stuff. I spent most of my life in sales and presentations and you are at the top of your game. Oh and my experience is froms 6 years with Snap On and 20yrs with Mac Tools and I have not seen anyone as good as you and I'm 69 and retired. Keep it up and you will end up very well off.

The quality and reliability of your content is amazing. I love your passion for excellence

So glad you are back posting, you videos are always so informative. I am trying to build a system for off grid living and working in my cabin. The way you explain everything is so clear and even I in my late 50s understand it. Keep up the great work as well as enjoying your well deserved home. So good to see you succeed.

Will, as another poster has said love your enthusiasm “this thing is a beast”

Hopefully prices will become even better as we all know supply and demand will effect that. I am seriously looking at converting my sailing fleet to electric. Been watching you for some time now and love that your doing well. My hope is that your life is long and prosperous and your troubles are few and small. Thanks for giving us so much.

Great review, I’ve been looking to buy the SOK 200ah and they are half the price of the battleborn. Your review was positive which is great.

I really like that you kept being impressed with what you found. I enjoy your positivity more than your disappointment. Thanks for another great, informative video!

Nice seeing you back in front of the camera pumping our quality battery info. Thanks Will.

Dude the work you put into you videos is really appreciated! I learn so much from you.

Realizing you have your own specific reasons for selecting components for testing, I had inquired to you about SOK a while back. Thanks for the review!

Will, welcome back.... I'm so happy that you did this. I'm a novice and your videos are very easy to follow. I will be copying this build for use in my tiny home. Thank you💫👏👏👏👏💫

I use those valence batteries in my solar car and LOVE em. The video you made on them was what helped guide me to what wound up being the perfect battery for the project. Thanks Will!

Will's finally at it again! I thought... hmmm maybe he's slowing down, then BOOM!! Massive new workshop for awesome vids to come!

This is what many of us have been waiting for. A quality LFP battery in the 200AH range is a very sweet spot for RV applications. These are 1/3-1/2 the cost of the best brand name LFP batteries.

Just popped in to see if there was anything new. Ended up being pleasantly surprised by the latest advancement in batteries. Your very good at getting a point across.

Totally Awesome video. I am so glad you are back your in depth analysis is with no sugar coating is truly what the world needs more of. Long videos are all right also. Thanks again for the outstanding information.

Great video! Glad to see you posting again with a new workshop! Lithium batteries are always evolving and you do a great job keeping your viewers up to date!

Hey, Will! Good to see you post another vid. It's been a while so I've been going back to see older vids to keep up my knowledge and honestly, it's just fun hanging out with you. You're just good peeps. I'm sure everyone else will agree. We need our fix of Will Prowse videos. Thanks for sharing again.

Missed your videos, glad to see you're back! Hope all is well with your family in the old house and your new place is working well for you!

Lotsa great details and updates. Liking the new bms being available! Great review as always. You’ve been instrumental in growing the functionality and efficiencies of manufactures. Thanks for keeping it honest.

Literally the most thorough reviews on KZfaq. Keep it up man.

Great video. I really like the build quality of those batteries. I'd love to see a video of how to build a protective (more enclosed) case for something like your Fortune cells. I like the taped up method for testing, but I'd like to see a setup that would be protected from dust a debris, or ideally protected from rain too. A setup that you could throw in the garage and not worry mice could get into. Just a suggestion. Again, great videos!

I really love what you’ve done. 😭 your work has made my life so much easier. Making my ability to live affordably but still have a quality life with the energy consumers I need in my van. Thank you so much 😭😭🙏🏻🙏🏻🙏🏻. I couldn’t afford the ones out there. But now I think I can.

Man , you rock . You have really educated a lot of folks, me specifically. You maybe my go to video . Thanks so much.

Dude, listening to you is like my first day in my first Physics class= Mind Blown. Holy fuck.....this was informative, interesting, and fucking entertaining; I say that despite having an electrical engineer as a brother in law for the past 40 years. And he's none of those things!

I'm nearly 50 years old and that one battery is more money than I get in a month, I'm still trying to build my 32700 pack for my solar and wind turbine one cell at a time, should be done in a year i reckon, keep up the good work Will love your vids

just ran across your channel as I'm looking into solar for my old Airstream I'm restoring. I am astonished at your ambition and skills. I'm an older dude and l enjoy seeing young talent and the excitement it brings to you. Thank for sharing bro.

Dude, you rock! Thank you for taking the time to experiment and share.

Thanks for the reviews and info Will! I built up a Fortune battery for my Overlanding rig early this year. This past summer I traveled thousands of miles on road, and hundreds on trails, forest access roads and the like. I can run my fridge for days with no sun, and the solar panels on the roof can charge it up in just a few hours. Electric chainsaw, lights, air compressor and more all charge their packs off this main battery pack. If it wasn't for this channel I would not have known about these cells! Thanks Will!

So funny, Will! I just convinced LithiumSolar to test those 280AH aluminum clad cells to validate value. He agrees- prices are CHEAP!!! The Big Battery 175AH battery is very interesting in many ways for us RVers....Hmmm, exciting times!!!

I called BB today , they pick up my phone right away. They build the battery in California, provide me a lots of the tech details. I think their battery quality is best I have ever seen so far .. Thank you , Will !!

Thanks Will!! Glad to see you back!!

Ok Ok Ok.... Will? SOK vs BBB? Your content and your class is 2nd to none! Very classy channel and we can't ask for more. Thank you for educating us and keeping us spending our money at the stand up companies. You go!

Hey Will. Take a cab of compressed air, turn it upside-down and spray the temp sensor. That should be cold enough

So much great information for DYI and turn-key amazing content as usual! love it!

Your Amazing man. I watch cheap RV living and Bob always says good things about you. Thanks for all the work you do for us ;)

Man I wish this wasn't way over my head. Love listening to this.

Holy crap, SOK ship to Australia for free. I can actually buy something you've reviewed that'll work here without paying hundreds of dollars of shipping.

Excellent videos you pump out! I didn't know much about these batteries and now I am educated enough to make a wise decision on purchasing one. Thank you!

It’s so cute on how happy you are with the SOK battery! I’m sold I think lol.

Really appreciate your channel! Getting closer to my RV solar system install, got your book and enjoying doing my research! Thanks! :)

Great video Will! It's almost as if the battery manufacturers are building these in order to impress you haha. Serviceability is a huge plus! I have two valence batteries at the moment but I will definitely be doing more research about the DIY cells and looking into building my own batteries for larger applications in the future. Thanks for the info and inspo!

I love the excitement and enthusiasm, thanks for the great videos.

BigBattery is getting things together and doing a really good job. I'm stoked!

Wow, you've changed man. I never thought I'd live to see you abandon the heat gun!

Great to see you posting videos again!

excellent video as always! Glad to have you back making vids. * Not a complaint, just a thought: You might be able to hang some blankets around parts of your workshop to cut out some of the echo in the audio. Thanks for what you do and am glad that you have been so blessed!

"That is a really nice crimp!" Love your commentary bro.

560Ah48V (32cells 280Ah 3,2V) from Basen (Alibaba) i payed only 3.000$ shipped in my door. It's incredible: 28,6kWh storage for less than 3.000$!

Dude you trip me out. Half of the time i have no clue but enjoy the videos and your passion. Keep the videos coming and maybe one day i'll understand more. I did buy a Jackery and solar panels and give them high scores for what i need. Be safe and healthy

Hey Will, you should make a video putting the BigBattery in a cooler with ice freezing it, then charge and dis-charge while it is frozen to see if it lives up to the manufactures claims and or how it preforms. Perhaps in a fire safe place, with a proper rated fire extinguisher nearby just in case. Do these batteries have a freeze fire hazard when charged or dis-charged?

Would be interesting to see the review of the battery from Chinese brand Meritsun (probably not the original manufacturer). The one for cold conditions, with heating and Bluetooth. They say that the battery can be charged during -30 Celsius (-22 Fahrenheit). The name of the company that sells it on Alibaba - Guangzhou Meritech Power Co., Ltd. These batteries being sold in Europe (especially in Norway) under other names.

Glad to see you are back and congrats on the new place love that man cave.

Excellent and timely video. I was just recently looking at the SOK batteries on Amazon. Still debating to build my own, or go for the SOK. Thanks for the review.

BTW.. How's the new housing coming along? Good I hope!

I really admire you and what you have accomplished. Do you have a video where your explain you whole story? The nerve disease you have, how you treated it, how you went from homelessness to KZfaq electric stardom? ✌️🙏 Oh and what happened to the rv?

You have the best solar and battery videos hands down. Thank you 🦄

Absolutely top notch comparison Will. Thanks for all of the great information.

Try the temperature sensor of the second battery with a freeze spray. It should give you up to -55 °C.

Got 20 285 A rated cells on Alibaba, delivered to my door with all taxes included under 2k USD. So far very impressed, may order some more.

So detailed and thorough. Brilliant! Excellent analysis!

Thank you 🙏 so much. I’m learning as fast as I can from you. It’s hard to download all your knowledge. I’m moving off grid soon & I want a nice lithium solar set up.

Something I’ve been struggling with, and can’t seem to find any information for online, is the possibility of using diversion to send excess power to a water heater, or if this is even possible

I have been waiting for a battery that I could charge in cold weather applications. The best I have seen from any company is with the use of a warming mechanism of some sort. This battery is a totally different "animal" than anything I have seen in regard to low temperature charging. I think you need to confirm their claims. If they are true, this is a game changer. Do you believe their claims?

We just installed 2x100ah SOK batteries and I am very happy to see your "thumbs Up". Living in Canada add 35% to any lithium batteries and while I did the research having you affirm my choice was fantastic thank you

We just found your channel Will and we really like your content. We are just getting into the market to setup a solar setup on our Fifth Wheel and beginning to research lithium batteries. Thanks for all of the info. ~Wilson

Those white things are inflammable glass fiber sleeves.

Well, good luck getting the SOK after that review.

NO idea what you were talking about. But LOVE the enthusiasm. 10/10

just love your excitement in this stuff

"I stop making videos for a month and now everyone's trying to impress me with actually good designs." *HAHAHAHAHA*

Hi Will - is it possible to try the low temperature disconnect with dry ice?

Very informative thank you. I must say that you are so articulate and knowledgeable, and a pleasure to watch, thanks.

I miss the days of you riding on your unicycle but love the new content too !!

Thank you for continuing to drive quality up brother.

i'll definitely go with SOK battery for my van build. Been looking for a good battery and thanks to you, i found one

Great video. Really nice to see how well you are doing giving quality information.

So glad to see that you're making videos again I look forward to them. Maybe one day you could do a review of a solar Arc inverter supposed to be all-in-one grid time off the grid or both and EMP hardened the company's based out of Georgia I've seen some videos on people installing them but never one on its features supposed to have a top of the class efficiency better than the Outbacks or any other inverter

Congrats again on getting a new huge workspace to play around in, but you're def going to need to put some sound dampening panels on the walls in there to mitigate some of that echo in your vid. Keep up the great work and already looking forward to your next video! =)

Great information, I can’t believe how much information you can pack into a video.

Great video. I used your book to build my solar system. and it works great. Now, I have a new issue with my DIY battery upgrade project. I had my order ready for two 100AH BattleBorns and a new PD9160ALV converter/charger....Now there is SOX. For the same setup it is $600 difference. The batteries have to go in an outside bay, They must (together) be able to discharge at least 150 amps for my 2000W inverter. I sure could use that $600 on other projects however, I sure can't buy them twice. because I wanted to save a buck or 6oo. Thanks for all your help, Richard

I couldn't buy the SOK fast enough...I was one of those that watched your vid a year ago and was totally dismayed when the prices went through the ceiling for that green battery! So...I almost gave in and bought a BattleBorn 100AH for $975...then you pop up this video! AWESOME!! I totally trust your reviews and assessment...I zoomed to the SOK website and bought the 200AH battery so fast, I didn't even finish the video - I just hit pause! LOL! Didn't want the same thing to happen to this battery as it did with the green one! Thank you for your assistance and guidance for those of us (ME)...who need it! I hope this battery will be enough for my 300 watt solar panels (I'm such a solar noob...! But, I'm trying!). Thanks. BTW...it's better to buy this direct as for some reason, it's over $100 more on Amazon, and its comes from SOK! Also, they would've charged me tax where the SOK site does not.

Will I don't know why I started watching your videos but I just can't get enough your enthusiasm is addictive. I am planning a solar system because my shed/cabin has plenty of electricity but it is 3 phase high leg that I can't figure out how to get a little 110 out of. So I have now figured I will just make a small solar system for the little electricity I need in the summer for a tv or my lap top or a light. From your videos I will either get the aluminum case at probably the calb cells.hopefully by April. Thanks

Another great video. I kept learning so much on your Channel. Ty vm.

I've seen it through the years of watching KZfaq videos of how the creators have a great deal in influencing the change of pricing on products and it's not just the price changing on products but it's also the changing of how things we take for granted in our every day to day lifestyles. It would be nice for the creators to maybe take the time to create their videos so it doesn't inhibit these changes because it actually ruins it for everyone!

Love it! Thank you. I just bought your book! Can't wait to read it.

You are a refreshing beacon of information and I really appreciate you.

That was a well made video sir and as always thanks for the info your videos are always a treat😎👍

You are a lot of fun to watch and very informative. I bought your book but it's much harder to read a thing than watch a video so I use it as a reference and it's great to have; have you considered putting out an audiobook? I'll do the voice work!

Thanks and good to see you back

I've been waiting for a SOK video!!!

This is such a great source of information and is very interesting. Good job 👍

Your knowledge and enthusiasm amazes me, I not smart in this stuff but but im not an idiot either. Thanks for doing these. Blessings

I finally gave in and ordered my first LiFePo4 from SOK....using your affiliate link of course 😁. Ive been pretty set on the benefits of SLAs under certain specific circumstances. However, the more of your videos that I watch the more benefits if Lithium seem to make sense in the long run. Even the properties of lithium have benefits when using with expensive equipment that “prefer” consistent dc power supply voltage. During emergency outages, my HAM radio equipment can certainly operate, but can have some obvious limitations when using lead acid batts. SOK seemed to offer a great value for a ready made drop in with warranty etc. Really wanted the Big Battery, as I love power pole connectors....thats all I use in my systems....but because they didnt have a 100ah battery it wasnt in my short term budget

As usual your knowledge of solar and batteries is great.