3 ms·
Nope. IIRC typical one is safe to discharge at -10 but needs to go to 0 to start charging. I wonder whether there is some off-the-shelf controller that can do
by ilyt 4y ago
Nope. IIRC typical one is safe to discharge at -10 but needs to go to 0 to start charging.
I wonder whether there is some off-the-shelf controller that can do something clever like run a heater instead of charging battery till it gets up to temperature
There are some specialty ones that allow lower temps but that comes back to cost again
- andruby 4y agoThere are some batteries that integrate temp sensors and heating pads: losing some energy to bring the battery up to operating temperature.
- amatecha 4y agoYeah one of the vendors I mentioned above sells batteries with exactly that functionality -- if the temperature is too low, the BMS disconnects and the heating circuit is powered by the incoming energy (whatever the source might be) until the cells are warm enough: https://www.canbat.com/product/12v-100ah-cold-weather-lithium-battery/ https://www.canbat.com/product/12v-100ah-cold-weather-lithiu...