KUNLUN 12V 100Ah LiFePO4 Battery Mini Perfect for Trolling Motors, Marine, Boat, Yacht, RV, Solar Off-Grid, Built-in 100A BMS with Low-Temp Protection 12 Volt Deep Cycle Lithium Iron Battery. Mini Size, Max Power – Only 16 lbs & Group 22 BCI size (8.19×5.43×9.02 in) – 30% lighter & smaller than standard 100Ah LiFePO4 batteries!
eBay