Battery type: lithium ion cells Standard voltage: 3.7v Capacity: 100mah to 50ah Max. Charge voltage: 4.2v Discharge cut off voltage: 3.0v Standard charge current: 0.2c Max. Charge current: 1.0c Max. Continuous discharge current: 1.0c Peak discharge current: 2.0c Cycle life: more than 500 times Dimensions: according to the requirments For the details, please contact us www.Jooleebattery.Com . Oem & odm service we can provide at the same times.