Quote:
Originally Posted by BBQ
How long can you keep that up?
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With a good design and a charging source for as long as you want.
For example, Roadtrek and Advanced RV have battery heating pads and battery locations and insulation (ARV only) and underhood generator charging as needed so time is only limited by engine fuel for those systems...
When powering a load there is significant internal heating from the lithium cells so the heating pads are not running continuously and have low power usage in any case.