This is not a low temperature protection question.
I will have low temperature charging protection.
This is about getting batteries warmed back up off-grid after they’ve cold soaked to -10F and -20F, or keeping them warm enough while idle and unattended off-grid so that they can be used to start up a heating system to eventually get warm enough to charge.
I go ice fishing and snow camping where I park and could be away from my van for days, in temps down to -10F (intentionally) or even -20F (I try to avoid being out remote below -10F, but it happens).
What might be good strategies for keeping/getting the batteries warm in this scenario?
Assume a well insulated van and battery box.
Solar too, but cannot always count on that.
1) Let the van and batteries cold-soak, then heat them back up when I get back to the van, 1a) with a fuel heater or 1b) with electric pads or 1c) both?
2) Keep the van heated to 10F, 20F, 32F, or some other min? This is not about keeping them ready to charge, this is more about getting/keeping the batteries in a state so that they can get other systems going (eg heat), and then eventually warm enough to charge.
3) Use heating pads to keep the batteries warm all the time?
Even if I heat the van, I am concerned about the heat failing for some reason while I’m away and the van and batteries cold soak to -10F or -20F?
Could the batteries still deliver enough while that cold to eventually heat back up via manually switched electric pads, or is it better to keep the pads always connected to keep the batteries warm no matter what?
Thank you.
I will have low temperature charging protection.
This is about getting batteries warmed back up off-grid after they’ve cold soaked to -10F and -20F, or keeping them warm enough while idle and unattended off-grid so that they can be used to start up a heating system to eventually get warm enough to charge.
I go ice fishing and snow camping where I park and could be away from my van for days, in temps down to -10F (intentionally) or even -20F (I try to avoid being out remote below -10F, but it happens).
What might be good strategies for keeping/getting the batteries warm in this scenario?
Assume a well insulated van and battery box.
Solar too, but cannot always count on that.
1) Let the van and batteries cold-soak, then heat them back up when I get back to the van, 1a) with a fuel heater or 1b) with electric pads or 1c) both?
2) Keep the van heated to 10F, 20F, 32F, or some other min? This is not about keeping them ready to charge, this is more about getting/keeping the batteries in a state so that they can get other systems going (eg heat), and then eventually warm enough to charge.
3) Use heating pads to keep the batteries warm all the time?
Even if I heat the van, I am concerned about the heat failing for some reason while I’m away and the van and batteries cold soak to -10F or -20F?
Could the batteries still deliver enough while that cold to eventually heat back up via manually switched electric pads, or is it better to keep the pads always connected to keep the batteries warm no matter what?
Thank you.