Mosesrocket
New Member
- Joined
- Sep 18, 2021
- Messages
- 2
There is lots of information on sizing your charge controller to handle the amps put out by your solar panels. You want to make sure your charge controller is large enough to handle the amount of current produced by your panels, as well as be compatable with your battery voltage and type.
But calculators seem to skip on sizing the controller to match the battery capacity or battery acceptance rate. Battery manufacturers recommend that charging current for FLA batteries should be between C/12 amd C/8. So a battery rated at 100Ah should be charged at a rate between 8.3 and 12.5 amps. Apparently, recharging a battery too quickly will shorten its life.
So, if you have a 100 Ah, 12v FLA battery, you should use a solar charge controller rated at about10 amps, and definitely not anything over 15 amps. Is this correct?
But calculators seem to skip on sizing the controller to match the battery capacity or battery acceptance rate. Battery manufacturers recommend that charging current for FLA batteries should be between C/12 amd C/8. So a battery rated at 100Ah should be charged at a rate between 8.3 and 12.5 amps. Apparently, recharging a battery too quickly will shorten its life.
So, if you have a 100 Ah, 12v FLA battery, you should use a solar charge controller rated at about10 amps, and definitely not anything over 15 amps. Is this correct?