I’ve been running a growatt 3000w 24v inverter with 2 SOK 12v 100ah batteries in series 0ff grid. Charging from PV seemed to be working, albeit slowly.
Ran great for a day and a half, and then the batteries ran out, even though the growatt was displaying 75% or so battery capacity remaining. When I tested each individual battery, one reads 12.7 volts, the other reads 9.7 volts. Any idea why this is happening? I thought they would both discharge at the same rate. Before hooking the system up, I fully charged each battery with a noco genius 5 amp charger.
The battery which has drained to 9.7v now does not respond to a charge as far as I can tell. I hook up the charger to the terminals and the charger doesn’t show that its charging. Any ideas on what to try next? Is this battery dead?
If I can get this battery back from the dead, can anyone recommend some settings on the growatt that would prevent this from happening again? I had battery equalization turned off, but maybe this should be on?
Ran great for a day and a half, and then the batteries ran out, even though the growatt was displaying 75% or so battery capacity remaining. When I tested each individual battery, one reads 12.7 volts, the other reads 9.7 volts. Any idea why this is happening? I thought they would both discharge at the same rate. Before hooking the system up, I fully charged each battery with a noco genius 5 amp charger.
The battery which has drained to 9.7v now does not respond to a charge as far as I can tell. I hook up the charger to the terminals and the charger doesn’t show that its charging. Any ideas on what to try next? Is this battery dead?
If I can get this battery back from the dead, can anyone recommend some settings on the growatt that would prevent this from happening again? I had battery equalization turned off, but maybe this should be on?
