Just assembled my 1st set of 4 small panels in parallel, total 100W and connected to charge controller 7amp max.
The ammeter says 4amps is coming in at 20V , connected it to 1 12v DC battery that already had charged up at 15v at store .
Charge controller says cut in at 13v and out at 14.2v , but when I connected it to the battery it kept charging battery to 17v and the controller got hot so I disconnected it.
Should the controller have stopped the charging process if it was at 15v , or is this normal? I don't want to blow up the 12v battery.
The ammeter says 4amps is coming in at 20V , connected it to 1 12v DC battery that already had charged up at 15v at store .
Charge controller says cut in at 13v and out at 14.2v , but when I connected it to the battery it kept charging battery to 17v and the controller got hot so I disconnected it.
Should the controller have stopped the charging process if it was at 15v , or is this normal? I don't want to blow up the 12v battery.
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