why i call Li fussy

PerryB67 wrote:

FWC wrote:
Yes you can.

It sounds like your batteries are within the heated space, then you don't need heated batteries, which brings the price down to ~$500 per 100Ah. Or you can add an adhesive heater (about $25) to a regular battery to make it a heated battery if you want.

You misunderstood.

The camper is winterized and in storage. The furnace hasn't been running since it went into storage. It's anywhere from -20 to 0F INSIDE the camper. Everything in the camper and the batteries in a box outside are -20 to 0F. There is NO 110 available.

Can I just flip the switch on the -20 to 0F Battleborns, wait until they get nice and toasty, and then turn on the furnace?

Enjoy,

Perry

Yes you can just start the furnace and use that to warm up the batteries. You don't need to heat the battery up first, but you can if you want to.

My point was that if your batteries are inside the camper, you don't need an internally heated battery for winter use in general. The camper heat will keep the batteries plenty warm to use. If you use water (even just in jugs) in the camper then lithium batteries without heaters will be fine. This is what I use.