Description 12.8v 7Ah LifePO4 Battery Electrical Specifications: Nominal Voltage:  12.8v Nominal Capacity: 7Ah Energy: 92.16Wh Maximum Modules in Series: 1 Discharge Specifications: Maximum Continuous Discharge Current: 7A Standard Discharging Current: 1.44A Discharge Cut-off voltage: 10v Over Discharge Current: 18 /- 5A Charge Specifications: Recommended Charge Current: 1.44 (0.2C) Maximum Charge Current: 7A Recommended Charge Voltage: 14.6v /- 0.2v Over Charging Protect: 3.65 /- 0.25v Mechanical Specifications: Dimensions: (L x W x H) : 151mm x 65mm x 94mm (100mm with terminals) Weight: 1.0kg Terminal Type: T1 or T2 (please stipulate in notes) IMPORTANT: Maximum of 4 in series or 4 in parallel 1.Before connecting in series, please try to reduce the voltage difference to within 5mV of each battery, otherwise, it will affect the final discharging capabilities. 2.  When connecting in parallel the operating current should not exceed 7A.