I bought a "dumb" DALY rated at 100A continuous for discharge and 50A continuous for charge.
It broke (~1A voltage drop) after a few weeks. I've been charging at 50A, on and off for several hours during the day, and discharging at 80A max.
I learned in another thread that quality control of DALY BMSs is miserable and that the advertized 100A should be de-rated by ~50% (in which case, a product rating at continuous 100A is fraudulent). And there is no workable warranty as one has to send the broken BMS to China (so they can trash it there?).
JBD are supposed to have better quality control !? And do fewer people have issues compared with DALY ?
So for 100A/50A discharge/charge, is a 200A JBD BMS + 5A active balancer (Heltec seems to make some that are generally recommended) a fairly reliable and affordable solution for a 80A/50A or even 100A/60A use case?
I have a ~700Ah 24V Li Ion EV battery (4p7s) which performs really well and has remained balanced for weeks even without balancer.
@Steve_S : your math is valid but does not apply to my off-grid scenario. I did not oversize my system to account for peak. Whenever a peak occurs which exceeds battery (inverter setting limits to 80A / ~2kW) + PV input power, my hybrid inverter (Phocos) switches to grid for the time being. I found this rarely the case anyway.
It broke (~1A voltage drop) after a few weeks. I've been charging at 50A, on and off for several hours during the day, and discharging at 80A max.
I learned in another thread that quality control of DALY BMSs is miserable and that the advertized 100A should be de-rated by ~50% (in which case, a product rating at continuous 100A is fraudulent). And there is no workable warranty as one has to send the broken BMS to China (so they can trash it there?).
JBD are supposed to have better quality control !? And do fewer people have issues compared with DALY ?
So for 100A/50A discharge/charge, is a 200A JBD BMS + 5A active balancer (Heltec seems to make some that are generally recommended) a fairly reliable and affordable solution for a 80A/50A or even 100A/60A use case?
I have a ~700Ah 24V Li Ion EV battery (4p7s) which performs really well and has remained balanced for weeks even without balancer.
@Steve_S : your math is valid but does not apply to my off-grid scenario. I did not oversize my system to account for peak. Whenever a peak occurs which exceeds battery (inverter setting limits to 80A / ~2kW) + PV input power, my hybrid inverter (Phocos) switches to grid for the time being. I found this rarely the case anyway.