Hi
I have a second hand 48V 400Ah battery bank I bought from China just a month ago. The battery is 24/7 on load hooked to solar panels and an inverter which is drawing around 500watts as the sun goes down around 5pm in a tropical hot Dar es Salaam.
By the time sun goes down, according to the charge controller the battery bank is 52.8V ( I usually assume the battery bank is fully charged by then as my consumption is hardly 12kwh/day Against a 5KW solar panels capacity.
So, I don't have measuring instruments in place, but I just want to deduce a fairly reasonable remaining capacity number. Does 52.8V of a battery which is on such a small load can indicate the battery capacity is only 70% of its original capacity ? And that means this is the remaining capacity of the battery. Mind you the 52.8V is on load voltage as have mentioned.
Thanks, Innocent
I have a second hand 48V 400Ah battery bank I bought from China just a month ago. The battery is 24/7 on load hooked to solar panels and an inverter which is drawing around 500watts as the sun goes down around 5pm in a tropical hot Dar es Salaam.
By the time sun goes down, according to the charge controller the battery bank is 52.8V ( I usually assume the battery bank is fully charged by then as my consumption is hardly 12kwh/day Against a 5KW solar panels capacity.
So, I don't have measuring instruments in place, but I just want to deduce a fairly reasonable remaining capacity number. Does 52.8V of a battery which is on such a small load can indicate the battery capacity is only 70% of its original capacity ? And that means this is the remaining capacity of the battery. Mind you the 52.8V is on load voltage as have mentioned.
Thanks, Innocent