Battery Question
Hi, I have a bunch of questions about batteries, invertors, charging, solar panels, etc. So I'll start off with batteries... My TC came equipped with 2 Interstate Marine/RV Deep Cycle SRM-27 b...
Forum Discussion
The lithium temperature issue is majorly overblown.
Most LiFePO4 batteries are rated to discharge down to -20F/-30C and will likely work lower than that, they are just not tested that cold. There is no BMS limit on low temperature discharge. The charge cutoff is programmed into the BMS and varies by manufacturer, but for Battleborn is is 24F/-5C.
A simple rule is that if you camp where your are using your RV water system, then you don't need to worry about lithium batteries.
It is fine to install LiFePO4 batteries inside the living space of the camper, in which case there is no temperature issue, as most of us don't keep our RVs below freezing when we are using them. If you cannot install the batteries inside the living space AND you plan on using your RV where the AVERAGE (not the minimum) temperature is significantly below freezing, then a battery heater and a blanket around the batteries may be necessary. You can buy batteries with a built in heater, or you can add an inexpensive tank heater under the battery bank.
Most LiFePO4 batteries are rated to discharge down to -20F/-30C and will likely work lower than that, they are just not tested that cold. There is no BMS limit on low temperature discharge. The charge cutoff is programmed into the BMS and varies by manufacturer, but for Battleborn is is 24F/-5C.
A simple rule is that if you camp where your are using your RV water system, then you don't need to worry about lithium batteries.
It is fine to install LiFePO4 batteries inside the living space of the camper, in which case there is no temperature issue, as most of us don't keep our RVs below freezing when we are using them. If you cannot install the batteries inside the living space AND you plan on using your RV where the AVERAGE (not the minimum) temperature is significantly below freezing, then a battery heater and a blanket around the batteries may be necessary. You can buy batteries with a built in heater, or you can add an inexpensive tank heater under the battery bank.
