Afternoon all
After the previous PV regulator gave up the ghost (wasn't regulating voltage so we had 17V being pumped straight into the battery!) we replaced it with a new MPPT controller.
I'm trying to work out how much damage it has done to the leisure battery. I let the new controller charge up the battery to full, then rested it for 24 hours and have now done a load test to roughly estimate capacity.
I left 72W (6A) running for 5.5 hours - 33A total draw.
On my 110Ah battery that would equate to 30% if it was working at optimum.
I was expecting a new resting voltage of around 12.3/4. However resting voltage is coming out at 12.6V?! I've checked with another multimeter and same result. The only thing connected to the battery now is the alarm, everything else is off.
Am I missing something here or do I have the world's most impressive battery?!
EDIT: I've just checked it again after 15 mins and is now showing 12.65V. 😳
After the previous PV regulator gave up the ghost (wasn't regulating voltage so we had 17V being pumped straight into the battery!) we replaced it with a new MPPT controller.
I'm trying to work out how much damage it has done to the leisure battery. I let the new controller charge up the battery to full, then rested it for 24 hours and have now done a load test to roughly estimate capacity.
I left 72W (6A) running for 5.5 hours - 33A total draw.
On my 110Ah battery that would equate to 30% if it was working at optimum.
I was expecting a new resting voltage of around 12.3/4. However resting voltage is coming out at 12.6V?! I've checked with another multimeter and same result. The only thing connected to the battery now is the alarm, everything else is off.
Am I missing something here or do I have the world's most impressive battery?!
EDIT: I've just checked it again after 15 mins and is now showing 12.65V. 😳