Recent content by sunrise

  1. sunrise

    JBD smart BMS displays wrong cell voltage

    In my case it was a faulty unit as I have another unit which didn't have the problem when connected to the same cells. I have just ordered 2 4s 200A one from Alibaba, I only need one and I am ok if one of them is faulty, it's about $70 a piece.
  2. sunrise

    Does Battleborn design their BMSes?

    Without specialized welding tool it's PITA to connect these cells, and why? the prismatic cells are smaller in volume, easy to work with.
  3. sunrise

    Does Battleborn design their BMSes?

    I came across this post https://diysolarforum.com/threads/wow-inside-my-battleborn.27513/ and the picture shows a BMS inside the battery, it's really not that much different from JBD BMSes, same layout . The supplier model number seems to indicate it's a off-shelf unit. I have always thought...
  4. sunrise

    Our NEW GO-TO LiFePO4 vendor...09.20.21

    About to order a few 304ah cells from Jenny, anyone knows what's the difference between the 302ah and the 304ah cells? I don't really care about the 2ah difference, are they similar quality wise? Thanks!
  5. sunrise

    Jenny, I would like to order 4 302ah cells with welded studs, ship to 98033 (Seattle Metro)...

    Jenny, I would like to order 4 302ah cells with welded studs, ship to 98033 (Seattle Metro). Could you please send me information on how to order? Thanks!
  6. sunrise

    105ah x 2 and 2000w pure sine wave inverter

    I can only fit 1 single 280ah DIY battery. But that would cost me around $800 (cells + 200A BMS). I recharge them in 3 different ways - Converter/Charger - 50A max, so max charging current 20-25A per battery, I have been doing this for a year now, no worries. - Solar panel, I have 300W solar...
  7. sunrise

    105ah x 2 and 2000w pure sine wave inverter

    2 12v batteries in parallel. Each battery is 105ah cell x 4 + 120A JBD BMS
  8. sunrise

    105ah x 2 and 2000w pure sine wave inverter

    Hey folks, Currently I have 2 LiFePo4 banks (105ah x 2, with 2 120a JBD BMSes) in my small camper trailer and it works very well. I am adding a 2000w (continuous) inverter and wondering if it's safe - The cells are rated 1C, so if I trust that it should be fine, but I am worried the...
  9. sunrise

    DC-DC charger current limiting

    Hey all, OP here, great to see all the comments in this thread. I think waiting for Victron for a software update doesn't seem to be a viable option, as the hardware might not have such capability. I have just purchased 1 step down converter and 1 boost converter from aliexpress, both have...
  10. sunrise

    Can 280/300ah cells reliably drive 2000w pure sine inverter

    yeah, 2000w continuous, 4000w peak output, I don't think they mention at temp - the operating temp is a wide range, spec at https://www.renogy.com/2000w-12v-pure-sine-wave-inverter/?gclid=CjwKCAjwjdOIBhA_EiwAHz8xmxvOCixgTlEZtAso-t24gzagKAVO0Pl96QARoaqxuMlWUCTv5ERJABoCIjkQAvD_BwE I got this a...
  11. sunrise

    Can 280/300ah cells reliably drive 2000w pure sine inverter

    Thanks! I will likely use one of the brokers on this forum to get the cells, not sure if they supply BMS as well. I have purchased many things from aliexpress and I have to say I'd rather pay a little more to have a good mood :D
  12. sunrise

    Can 280/300ah cells reliably drive 2000w pure sine inverter

    Thanks! agree that the connections and terminations matter a lot over 100a. That's one of the main reason I want to build a new battery bank.
  13. sunrise

    Can 280/300ah cells reliably drive 2000w pure sine inverter

    Thanks, due to space constraint I can't have these cells in 4s2p configuration, My current setup is actually 4s2p of 105ah cells, with 2 120A JBD BMSes. the inverter I have is a 1000W one so they do fine. in theory they should be able to pump out 210A per data sheet, but the tiny terminal screws...
  14. sunrise

    Can 280/300ah cells reliably drive 2000w pure sine inverter

    Thank you, I know how to calculate the ah numbers. My question is how reliable these 280ah cells are @ 0.5-1C continuously.
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