suprior in quality, reasonable in price, maching in color mobile phone battery for BlackBatteryBattery type: Li-ionVoltage: 3.7vCapacity: 850mAhSize: standardCycle life: >500TGuarantee: 12monthsWorking temperature: -10-+50 degree centigradeNo obvious memory effect, it can charge power any timeDouble protective IC: Reset IC and mosfet with NTC PCB offer over-discharging, over-charging, over- ...