Voltage of single cell: 3.7V Nominal voltage after battery pack combination: 18.5V Capacity of single battery: 3.2ah Battery combination mode: 5 strings and 1 parallel Voltage range of battery after combination:12.5v-21v Battery capacity after combination: 3.2ah Battery pack power: 59.2w Battery pack size: 20*96*69mm Maximum discharge current: < 3.2A Instantaneous discharge current: 6.4a-9.6a Maximum charging current: 0.2-0.5c Charging and discharging times: ＞ 500 timesXUANLI 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.1. Do not submerge the battery in the water.Warnings. 2. Do not mix fresh batteries with used batteries. 3. Do not mix batteries with metal stuff together. 4. Do not insert batteries with the (+) and (-) reversed. 5. Do not use Efest batteries with defective E-cig mods. 6. Do not disassemble, dispose in fire, heat or short circuit. 7. Do not put the battery in a charger or equipment with wrong terminals connected.1. Over 20 years industry experience; 2. Excellent work team; 3. Good brand reputation and stable financial status; 4. Competitive price with approved quality; 5. Perfect pre-sale & after-sale service system; 6. Eco-friendly materials from ISO, 、UL,CB,KC approved.(Remark:Below max discharge/charge current is the max value the battery could bear, it does not means the price we showing is based on such value, we make customized battery, please provide your request us to confirm price.)