Using a battery charger with solar

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Scout

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Can I hook a 120v battery charger to my batteries while the solar is charging? 
I have 2 12v agm in parallel. So if I can hook the charger up, would I hook to one postive on one battery and one negative on the second battery and charge them like 1 big battery or charge them separately by hooking to pos/neg on the same battery?
 

Cajunwolf

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Yes. Like one big 12-volt battery, your replacing amps/current, but your solar charge controller, depending on type and brand, might turn on and off or turn off if the AC charger is feeding more voltage/current than the solar panels are. It's all relative and depends on the AC charger being used.
 
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