Polinovel lithium ion lifepo4 battery is designed & developed to outperform traditional lead acid batteries by offering more usable & reliable power with much less weight and truly free of maintenance. Compared with traditional lead-acid battery, lithium battery has overwhelming advantages in cycle life, charging & discharging, and more tolerance in high temperature. They are smarter and safer with BMS (Battery Management System) to protect the battery from over charging, over discharging, over current, short circuit and over temperature. Polinovel Lithium Ion Battery Features · Adopts patented 32650 cylindrical LiFePO4 cells · “BMS + Safe Board” dual protections provide safe power · Screw fastening structure increased battery durability · Market proven outstanding performance in harsh environment · Support maximum 4pcs connection in series or parallel to expend energy · Trustworthy innovative lithium battery manufacturer Premium LiFePO4 Cells  The battery adopts patented 32650 cylindrical LiFePO4 cells produced by the top 5 lithium battery manufacturers in China. Intelligent BMS  Each LiFePO4 battery includes intelligent BMS inside to guarantee the battery safety. Allows up to 4pcs in series or parallel connection to expand the capacity. Durable Structure Individual cells are connected to high strength PCB and the screw fastening structure offers increased durability. Lithium Battery Specification HD12100 Model: HD12100 Nominal Voltage: 12.8V Nominal Capacity: 100Ah Energy: 1280Wh Connection: max. 4pcs in series or parallel Standard Charge Volt: 14.6V Discharge Cut-off Volt: 10.0V Standard Charge Current: 5A-50A Max. Charge Current: 100A Const. Discharge Current: 100A / 160A Peak Discharge Current: 200A (<5s) / 320A (<5s) Dimensions (L x W x H): 329 x 172 x 214 mm Weight: 14.3kg Terminal Type: M8 Case Material: ABS Enclosure Protection: IP56 Cell Type: Cylindrical Chemistry: LiFePO4 Communication: n/a Operation Temperature Range: Charge: -35 to 45 ºC (31 to 113 ºF); Discharge: -35 to 60 ºC (31 to 140 ºF) Storage Temperature Range (1;3;6 months): -20 to 60 ºC (-4 to 140 ºF); -20 to 45 ºC (-4 to 113 ºF); -20 to 25 ºC (-4 to 77 ºF)