I am working on building an off-grid solar system for a cabin and just got my FIRST-ever battery built. I ordered 16 3.2v 280ah prismatic EVE cells from Docan Tech. They arrived from Houston, TX in excellent condition. Were charged to ~3.29v (+/- 15mv). I topped balanced with an iCharger X6 and a HP server power supply 'hacked' to get 47A output at 12v (see description here: http://www.tjinguytech.com/my-projects/HP47A). I charged them in parallel up to 3.65V and held constant current until ~0 amps. I had to do this for two batches of 8 cells because I didn't have enough bus bars. In total, charging took slightly over 4 days to top balance.
After top balancing I assembled a 16s pack and installed a Batrium WatchMon CORE + K9 + shunt and assembled a small 'control' board and passed it through a 225A ABB breaker with a shunt trip (will be put in a metal enclosure soon). I attached a Victron Cerbo GX and connected it to BMS via VE.Can -- surprisingly it all worked! (except that Batrium doesn't appear to send Alarm notifications on low temp, charge, etc. -- I think this is just a feature that is not implemented).
Eventually I will be hooking the battery up to a Multiplus 48V/5000watt inverter and a solar chargers from Victron and wind power.
In any case, I fully recommend Docan Tech prismatic EVE cells. 16 cost me ~2,400$ will shipping to Seattle, WA and arrived in roughly 7 days after payment.
Also, thanks to all the people putting images and information about their projects -- I don't think I would have been able to do this without this forum.
After top balancing I assembled a 16s pack and installed a Batrium WatchMon CORE + K9 + shunt and assembled a small 'control' board and passed it through a 225A ABB breaker with a shunt trip (will be put in a metal enclosure soon). I attached a Victron Cerbo GX and connected it to BMS via VE.Can -- surprisingly it all worked! (except that Batrium doesn't appear to send Alarm notifications on low temp, charge, etc. -- I think this is just a feature that is not implemented).
Eventually I will be hooking the battery up to a Multiplus 48V/5000watt inverter and a solar chargers from Victron and wind power.
In any case, I fully recommend Docan Tech prismatic EVE cells. 16 cost me ~2,400$ will shipping to Seattle, WA and arrived in roughly 7 days after payment.
Also, thanks to all the people putting images and information about their projects -- I don't think I would have been able to do this without this forum.
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