LiTime (aka Ampere Time) offers the best deep cycle LiFePO4 lithium solar batteries that last longer for your RV, trolling motors, motorhome, off-grid solar.
"Best Value" 12V Heated Lithium Battery * 12V self-heating lithium battery, Best battery used in cold conditions, Suitable for trolling motors/RVs/solar systems/home energy storage * 2X Heating Efficiency, 100W Heated Lithium Pad * Automatic Heating Function (begin to heat when the cells below 41°F (5°C), stop when the temperature has reached 41°F (5°C) * 30~60 minutes(heating from 14°F), 70~100 minutes( from -4℉) * 100A BMS (over-charging, over-discharging, over-current, over-temperature, and short-circuit protection) * Low Temperature Cut-off Protection (cuts charging when it below 0°C/32°F, stops discharging when it below -20°C/-4°F), to protect the battery and extend its life. * EV Grade A LiFePO4 Cells, 4000+ cycles at 100% DOD * 1280Wh of Energy, 1280W of Output Power * Group 31 batteries size, L13 * W6.77 * H8.43 inch * Drop-in replacement for lead-acid: 1/5 the weight, same power (V.S. a 12V 200Ah lead acid) * Flexible 3 Recharging Ways (LiFePO4 charger/Solar/Generator) * 20.48kWh: Expandable up to 4P4S for a 48V 400Ah system * IP65 Waterproof