Recent content by bmtrirow

Yes, I can ship them, but you'll need to cover the additional shipping expense. What else would you like to know? here is a thread on these batteries: https://diysolarforum.com/threads/cheap-4kwh-lifepo4-batteries-from-battery-hookup.1496/

I have three 24V BYD LiFePO Batteries for sale. I never tested the capacity of these, they were originally advertised at 4 - 4.5KW, but others have tested theirs closer to 3.5KW. They weigh about 160lbs each. The batteries are located in Connecticut and available for local pickup. Asking $425...

Thank you for your response! I found this video that David Poz posted: He did what you are describing by arranging the cells in parallel first right?

I have 3 LiFePO batteries wired in parallel. Do I need a separate bms for each battery? Thanks!

Thank you for the advice, that's really helpful. I don't own the appliances yet so I was making guesses. I'll adjust my assumptions.

I appreciate the comment, maybe I'm thinking about this wrong. Below are my power needs assumptions (pretty conservative, I don't think I'll actually use this much). I'm still figuring out exactly which appliance to purchase. Also, I know there will be some loss when converting from 24V to 12V...

Thank you Craig! I may get more solar panels, but I am using this set up in a van and have limited space for them. I don't expect to use the entire battery bank each day, I will probably only use 1/3, but I like having the extra as backup. I will also connect to my alternator and have a charger...

I have a 24V system with 550AH of battery and 4-200W solar panels. I'm planning to wire 2 pairs in parallel and then the pairs in series with each other. Is that best? Also what size charge controller do I need for this system? Thanks for your help!

If I build my own batteries using LiFePO4 cells and included a cell balancer, low temp cutoff, battery protect for low voltage disconnect, and program a Charge Controller to monitor charge and discharge bandwidth, do I need a bms? Thanks!

Thank you for this information and all of the videos and help your provide Will! These batteries seem like an amazing deal, but when looking at other videos, it seems like incorporating a BMS is a bit of a challenge. I created the schematic below to try and avoid using a BMS. Can anyone look...