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Jim_VA's avatar
Jim_VA
Explorer
Aug 21, 2023

Charge dead truck battery (LA) from house battery (LiFePO4)

Recently I was in a very remote area when my "check guages" light came on indicating the alternator wasn't charging. It eventually came back on (could be a bad ground?). I had a similar situation last...
Boomerweps's avatar
Boomerweps
Explorer
Aug 21, 2023
You could use jumper cables to parallel your house battery with your vehicle battery and let it charge your vehicle battery BUT LiFePO4 batteries are not made for starting heavy motors, like an engine starting motor. The power surge could cause the BMS to shut down the house battery, then you’re really screwed.
Most auto parts stores will test your battery and alternator because they want to sell parts. Let them test it.

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