【Grade-A Battery Cells & 100A Smart BMS】Kgioo 12V 100Ah lithium battery uses Grade A LiFePO4 cells for exceptional quality, higher energy density, and greater power, certified by UL testing for highest level of safety. When the temperature is below -4℉, the BMS will cut off the discharging immediately, and is below 32℉, the BMS will cut off the charging immediately.offering a fortress of protection. Guarding against overcharge, over-discharge, over-current, over-voltage, overload, and short circuits, it ensures not just power, but peace of mind. 【Perfect Replacement for Lead-acid Batteries】Kgioo 12V 100Ah LiFePO4 Battery’s lifespan can reach to 10 years , can fulfill 4000 Cycles @100% DOD. In contrast, Lead-acid batteries typically only last for 3 years with 200-500 cycles.Compared with lead-acid batteries, lithium batteries have higher energy density and weigh at least half as much as lead-acid batteries. 【Supports Series & Parallel Connections for Wide Applications】Kgioo 12V LiFePO4 battery 100Ah could connect in parallel & in series for larger capacity.Expandable up to 4 in series and 4 in parallel (Max 4S4P).It can build a 48V 400Ah system with a maximum energy output of 20.48kWh. It is very suitable for RV, solar energy and home energy storage. 【Safety and environmental protection】 Kgioo LiFePO4 battery is made of 100% safe, non-toxic and non-hazardous energy, with higher chemical stability and less prone to thermal runaway. There is no acid in the battery, and you can safely install it in any position. 【Warm Tips】This battery is a storage battery, not a starting battery. Do not use it to start an engine or golf cart. Kgioo LiFePO4 batteries has a 3-year warranty! We also provide professional technical support and online customer service. If you have any product-related questions or concerns, please feel free to contact us.Before series-parallel connection, fully charge each battery pack individually before making series-parallel connection. 【Important Notes】① KGIOO deep cycle battery 100Ah 12V is not for starting applications.② Before use, fully charge the battery with a 14.6V±0.2V 20A lithium battery charger.③Battery maintenance schedule: Perform a full charge(100%) every 3 to 6 months.Environmental,no electrolyte evaporation.④ Connection's Notes:same brand,same voltage,same current,use less than 3 months.⑤To optimal performance, push the electric outboard motor forward to run the trolling motor battery smoothly.