Charging GC-2s in 12V Configuration?

KE5YD
KE5YD Solar Expert Posts: 32 ✭✭
in Solar Beginners Corner #1
Been trying to supplemental charge GC-2s in 12V system with an automotive smart/semi-smart charger. Charger will not engage batteries? Is there a mod or work-around for utilizing this type of charger? Charger with automotive, seems to work quite well; has good absorb..short equalize to 16v..then drop back to 13.6v and float. But, deep cycle is a no go. Any suggestions for a mod or another economical solution?
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  • Cariboocoot
    Cariboocoot Banned Posts: 17,615 ✭✭✭
    #2
    Re: Charging GC-2s in 12V Configuration?

    Smart chargers usually aren't.

    What's the Voltage on the GC2's? Since deep cycles normally run higher than automotive batteries the charger may think they don't need a charge. Curiously that means they are probably above 75% SOC and probably don't need a charge. Or it could be too low and the charger doesn't recognize there is a battery on it.

    If you want to 'fool' an automotive charger into working you could try pulling a load on the battery when the charger is connected. I find this often helps with really low batteries (turn headlights on, for example).
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