Build your own solar battery and save thousands $$$

"If you can't explain it simply, you don't understand it well enough." Will I ever make a DIY battery? probably not, but your teaching on this subject is phenomenal. The way you can so easily communicate what is going on is incredible and had me watching the whole video. Great work sir

Oh man, 72kwh sounds really awesome, that's the realm of solar-only winter survival, pretty nice.

These are the type of videos I like from Poz. Was missing them. Well explained easy for most to build their own DIY pack. Even easier if the new CATL cells are purchased unassembled. They can be had for the same money.

Also, you've earned my subscription. You are speaking honestly, clearly learning and teaching at the same time and you're actually being very helpful in the information you've created here. Thank you for taking the time to record and share this, I can't wait to get closer to electrical freedom, it has always been a dream of mine.

"Video killed the radio star", and "server rack batteries killed the DIY battery". There will always be a few folks that still want to do it themselves for cheap :) Great job...

Thx a lot DTG, this was awesome. It always amazes me the length at which you go to test very complicated things. You're one of the kind. Thx

I’m a software engineer and formally a mechanical engineer and I’m super impressed. The way risks are mitigated and everything is handled shows an insane amount of skills. I love it. Really nice to see

I recognise these modules, they are used in industrial grid connected battery storage sites. There would be multiple containers with banks of these modules. I always wondered what cells were in them!

David, I don't understand why you don't have more subscribers. You are one of the top 5 battery DIYers on YouTube. I have learned a helluva lot about building batteries from watching your videos. I'm not building them at the scale that you are, but I am building them nonetheless and enjoying the process.

David, thank you for this video specifically. I just finished a DIY 14.5kw system on my house. I wanted batteries next. I was going to do a 6pack of EG4's for roughly 8500$ I was budgeting for it for next year....then this video came along. I watched and stared at that listing on battery hookup for half a day, entered your discount code and purchased 4 of these modules. The discount code was good for 10%, which was huge considering the price. Basically I got free shipping on 1400lbs of batteries. I just recently finished building 2 heavy duty carts for the 4 packs. So per your comment in the video, I am leaving the batteries in place, and wiring up 5x 48v modules to my Sol Ark. Like you said, a little bit of work saved thousands. It's twice the storage for the same price as the 6pack of EG4's.

Thanks David. Always a pleasure to watch you complete a project.

Great video! I bought 8 of the two-for packs of these 280 Ah CATL cells. Way better value than the $130 for each 100Ah I was paying. Glad one of the makers made a video using these cells. Keep up the great work! We're learning a lot from you.

As usual, great video David. It's a pleasure watching your DIY projects. Thanks!

Where to begin? 1. Super Nerdy yet very engaging. 8.0 2. Production quality is excellent for this type of video. 9.5 3. VERY informative. 10.0 4. Can be used as step-by-step instructions. 10.0 5. Helped me decide to just spend the money and buy a Powerwall from Tesla. (But that's me). You sir have a new sub.

AY I JUST BOUGHT ONE OF THESE PALLETS A WHILE AGO. I'm very glad I can see someone else tackle this type of project! Thanks for the video :)

Just building the same using scrapped BMW I3 packs. Pre-charge is to protect the contactors from welding not the capacitors. I really admire the detail and time you have spent making this video, well done.

Bought a crate plus an additional 8 cells for my solark 15k back in May, used the 300amp bms from battery hookup. Adjusted the settings in the BMS and solark. They have been running flawlessly everyday for almost a month no issues. The BMS will time out if the batteries sit for more than a day without any charge or discharge, but I load shed everyday so doesn't matter for me. Cells were top balanced and discharge and charge within 0.010 of eachother without an active balancer. $6.5k all in for 45kwh at 8 to 10k cycles what a deal.

The timing of this video is perfect! I just purchased 50kwh of these for an EV. Thanks David!

I’m sooo tempted to grab a set of these module after watching this video. So much knowledge in this video and presented in a fun way. Thank you for sharing, David!

Your content is some of the best sir- thank you for doing what you do. I personally would like to see the batteries together and hear your commentary.