.Voltage of single cell: 3.7V .Nominal voltage after battery pack combination: 3.7V .Capacity of single battery: 2.6ah .Battery combination mode: 1 string 2 parallel .Voltage range of battery after combination:3.0V~4.2v .Battery capacity after combination: 5.2ah .Battery pack power: 19.24w .Battery pack size: 20*40*67mm .Maximum discharge current: < 5.2A .Instantaneous discharge current:10.4a-15.6a .Maximum charging current: 0.2-0.5c .Charging and discharging times: ＞ 500 times1. With more than 12years' experience and more than 600 skilled staff serve you. 2. Factory ISO9001:2015 approved and most products comply with UL,CB,KC standards. 3. Wide range of production line covers Li-polymer battery,Lithium ion battery, and battery pack for your various demand.XUANLI electronic Co., Ltd is an experienced manufacturer of batteries specialized in smart battery packs,18650 lithium batteries,polymer lithium batteries,lithium iron phosphate batteries,power batteries,battery chargers and various special batteries. We welcome OEM and ODM orders and we sincerely hope to work with you hand in hand to create a prosperous future Experienced staff Reasonable price Product performance Quality approvals Small orders acceptedDo not disassemble, dispose in fire, heat or short circuit Do not insert batteries with the (+) and (-) reversed Do not mix fresh batteries with used batteries Do not submerge the battery in water Do not submerge the battery in the water.Warnings: Do not mix fresh batteries with used batteries. Do not mix batteries with metal stuff together. Do not insert batteries with the (+) and (-) reversed. Do not use Efest batteries with defective E-cig mods. Do not disassemble, dispose in fire, heat or short circuit. Do not put the battery in a charger or equipment with wrong terminals connected.