Solar and Inverter combo question
hi all, i tried searching but did not find specifically what i was looking for. I have a generator hooked to my inverter which charges my battery. I would also like to connect a solar panel ...
Forum Discussion
"When one system is charging the others just coast and dump their power how ever they are built to do it."
That is only true if the one system has enough amps to do all that the battery bank will accept. If the battery will accept more amps than that, then more than one system can be used to add their amps to meet what the battery will accept.
They add their amps, but how many amps each does depends on how close each one is in charging voltage to the battery's voltage at the time.
With several chargers each at a different voltage, then as the battery voltage rises to go past the charging voltage of each one, they drop out in turn, but not until then.
You can have two 40 amp chargers adding their amps to make 80 amps, but when the battery SOC rises to the point it will only accept 79 amps and tapering from there, now it gets interesting what each charger will do as its share of the total amps. The one with the higher voltage will do more of the total.
Once amps taper to 40 amps acceptance, they might be doing 10 plus 30 or whatever. If they are the same charging voltage it will be 20 plus 20. At 40 amps acceptance, you can turn off one charger and it will jump back to doing all 40 by itself and continue down from there to finish the job.
Best results to get them to add their amps is from having them at as close to the same charging voltage as possible, and to make that voltage what the battery specs say to use for the absorption stage, somewhere in the 14s.
That is only true if the one system has enough amps to do all that the battery bank will accept. If the battery will accept more amps than that, then more than one system can be used to add their amps to meet what the battery will accept.
They add their amps, but how many amps each does depends on how close each one is in charging voltage to the battery's voltage at the time.
With several chargers each at a different voltage, then as the battery voltage rises to go past the charging voltage of each one, they drop out in turn, but not until then.
You can have two 40 amp chargers adding their amps to make 80 amps, but when the battery SOC rises to the point it will only accept 79 amps and tapering from there, now it gets interesting what each charger will do as its share of the total amps. The one with the higher voltage will do more of the total.
Once amps taper to 40 amps acceptance, they might be doing 10 plus 30 or whatever. If they are the same charging voltage it will be 20 plus 20. At 40 amps acceptance, you can turn off one charger and it will jump back to doing all 40 by itself and continue down from there to finish the job.
Best results to get them to add their amps is from having them at as close to the same charging voltage as possible, and to make that voltage what the battery specs say to use for the absorption stage, somewhere in the 14s.
