Warning! This is a dangerous DIY proceedure. I re-built this battery using the best LiFePO4 cells on the market (Grade A, CATL). It was a dangerous build, but I saved thousands of dollars compared to buying pre-built server-rack style 48V batteries.
Intro: 00:00
DIY vs. buy: 00:28
Unboxing: 02:27
Dismantling: 06:02
Re-assembly: 17:19
Wiring the BMS: 23:03
Capacity Testing: 29:07
Fuse and Terminals: 41:35
Cost breakdown: 46:12
Who is this good for? 49:02
Conclusion: 52:38
Battery Hookup Links:
Note, the links are not affiliate links. The affiliate program is through the discount code. Please use code DAVIDPOZ at checkout. Enjoy an extra discount for the next 30 days after posting this video.
CATL 20s LiFePO4 battery modules: https://batteryhookup.com/products/new-catl-modules-with-20x-3-2v-280ah-prismatic-17-92kwh-150-kwh
Individual 280Ah, 3.2V, cells: https://batteryhookup.com/products/2x-new-catl-3-2v-280ah-cells-recovered-from-modules
BMS, with Bluetooth and 300 Amp contactor: https://batteryhookup.com/products/7s-21s-24v-75v-300a-lithium-ion-bms
BMS, 100A: https://batteryhookup.com/products/12v-lifepo4-smart-bms-w-low-temp-cutoff?variant=42745018286242
Amazon Affiliate Links:
Terminals, Through panel, positive and negative: https://amzn.to/3Dxx1gd
Solder connectors with heat shrink: https://amzn.to/3OyZYyM
Banding kit: https://amzn.to/3OvkXCm
Copper Flat Bar: https://amzn.to/475pa7d
“As an Amazon Associate I earn from qualifying purchases.”
Server Rack batteries are a great choice if you don't want to DIY your own battery. I recommend the EG4 batteries from Signature Solar. Here is an affiliate link to the rack of batteries I use every day: https://signaturesolar.com/eg4-lifepower4-lithium-batteries-kit-30-72kwh-6-server-rack-batteries-with-free-pre-assembled-enclosed-rack-with-door-wheels-busbar-covers/?ref=4_rHcgZ9x-TiF-
Schneider Inverter: The Schneider XW PRO inverter has been powering my home this year without any problems. I can recommend it. https://signaturesolar.com/schneider-conext-xw-pro-6-8kw-inverter-charger-48v-120-240v/?ref=4_rHcgZ9x-TiF-
Disclaimer: Some items may have been provided at a discount for the purpose of a review. However, the thoughts and opinions expressed in this video are those of David Poz, LLC. only.
Disclaimer:
My videos are in no way intended to be instructional "how-to" lessons. I am simply documenting my project for informational purposes. Property damage, personal injury, or death may result, even when following manufacturer's instructions. I cannot be held liable for such damage or injury. It is YOUR OBLIGATION to ensure that you are complying with any local and federal laws as well as code and permit requirements.
David Poz, LLC