Can the 12V Power Wire In a 7 Way Be Used to Charge a Lithium Battery
Question:
I have a 2022 GMC 1500 with the Duramax engine. I planning on installing a Renogy 40 AMP DC to DC LION battery charger. Can I use the 12V output on the 7 Way and what AMP output will I get?
asked by: RIch G
Expert Reply:
Rich, the 12V wire is not going to charge your lithium battery well. Typically when you start your vehicle and your alternator is charging the starting battery, you will get some charging to your lithium battery while the alternator is outputting at bulk or absorption voltage, but once the starting battery reaches the float stage you will get a very minimal amount of charging to your battery.
So, you're going to need to run the power from the start battery instead of the 12v pin on the 7-way.
Product Page this Question was Asked From
Curt 7-Way RV-Style Trailer Connector - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 7 Round - Blade
- CURT
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