Hope you can like itfeatures- usb charging port with led to indicate if battery is done charging. - protection circuit built in the anode - multiple protections with pressure relief vent- short circuit protection, over charge protection, over discharge protection- 500 charge cycles (a properly maintained battery is designed to retain up to 75% of its original capacity at 500 full charge and discharge cycles) specifications: model: 18650usb-3.7-3600battery type: 18650 rechargeable chemistry: li-ion nominal capacity: 3600mah minimum capacity: 3500mahnominal voltage: 3.6vcharge voltage: 4.2vinternal resistance (mω):max. Discharge current: 3.5acharging current by charger: 1a (recommended) 2a (maximum)charging current by on-board usb port: 1adimensions: battery size (d x h): 18.6x 68.5mmpackage size (l x w x h):90x76x25mmled indicator: charge---red, plete---greenpackage included: 2 x 18650 rechargeable li-ion battery 1 x 18650 battery casenotes: batteries are shipped from factorywith partial charge to meet optimum storage conditions. Fully charge beforeuse. warnings: do not expose battery to heat orthrow in to water. After extended periods of storage, it may be necessarycharger the battery to obtain the maximum performance every three months. Keepthe battery out of reach of children.
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