Newbie - Need help sizing a charge controller
Hi, I have a simple system that consists of 3 solar world 70 poly/RHA panels with rated voltage of 18.1 amps each and short circuit voltage of 3.pp amps each, they are run in series ad drive a one horse DC well pump. I would like to add batteries which are Roll Royce 6v batteries, what size controller and what is the configuration of batteries to achieve the proper 12V output. Currently the system has only an on-off switch and a lightning resistor attached. I tried to add a 20 amp controller and did something wrong because it smoked it. Help.