MobilePhoneBatteryBL-4B forNokiaSpecificationModelBL-4BCellTypeli-ionStandardVoltage3.7VChargingLimited4.2VCapacityRange650-800MAhColorblackQualityGradeA/AA/AAACycleTimemorethan500timesGuarantee12monthsMOQ500PCS/OrderCompatibleModels6111,7370,7373,N76,2660,2760,7088,7500Tips1)Useanorginalorreliablecharger 2)Donotthrowthebatteryintofireorwater 3)Toavoidkeepingitatthetemperatureabove45degreesoritmaycauseexplosion 4)Donotpressingitordroppingitfromthehighaltitude. 5)Topreventshortcircuit,nevertoputittogetherwithconductorssuchaskeysandcoins,etc.. 6)Keepthebatteryinacooldrysurrowndingifitsstandby The injection process The double IC PCB reflow reinforcement Dourble IC Nickel plate Battery testing Assemble Battery Packing and Sealing