3.7v 1600mah-2800mah 18650 Li-ion Batttery Lithium Ion Battery 18650 Battery Pack Specifications: Nominal voltage: 3.7V Nominal capacity:1600- 2800mAh Cycle life: 1000 times Service life: 3-5 years Warranty: 1 years Weight 60g Battery color: customized Application: digital products Double USB output: yes Storage temperature: 10-45degrees Working temperature: 0-60degrees Discharge temperature: -20-50degrees Maximum discharge current: 2C Standard charge current: 0.1C Standard discharge current: 1C Essential resistance: <45ohm Discharge cut-off voltage: 2.75V Maximum charge voltage: 4.2V Charging method: CC/CV Major advantages: High-energy density High-working voltage Pollution-free Long cycle life No memory effect Large capacity, low-internal resistance, low-temperature performance and good stability Safe and reliable Factory price and high-quality Good consistency Lightweight, small and customized size Wide application for electronics and industryLow-self discharge rate Certification:CE,UL,REACH,UN38.3,ROHS,MSDS