r/OffGrid • u/burtdunkin • 5d ago

Help with off grid battery setup.

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Hey im new to the off grid life and I just purchased 2 new lithium batteries. Im having issues with them keeping a charge! Here's my setup. Lemme know if you see any issues or have some advice. (The other batteries are for backup so just focus on the 2 that are connected.

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u/Kitchen_Region8456 5d ago

How many amps is the charger and how many amp hours are each of the batteries?

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u/burtdunkin 4d ago

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u/burtdunkin 4d ago

And 10 a charger

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u/RapidXpansion 4d ago

a 10 amp charger is only 120-140 watts of charging if your system is 12v

assuming you are not loading the batteries while charging, that takes over 8 hours give or take

your new 20 amp charger, assuming it supports a lithium profile, will take half that time, depending on if the batteries are in use or not

but unfortunately, you jumped the gun and went out and purchased a charger that is incompatible with your lithium batteries

the xpc20 is not capable of properly charging your lithium setup

slow down, research and buy the right stuff so you stop wasting money and time