Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : czvv BulletPoint : bump 9 Volt Rechargeable Batteries - 2 Pack BulletPoint1 : Higher Capacity, Lower Spend: Upgraded 850mAh Lithium cobalt oxide battery with about 2.6x larger capacity than common 9V 320mAh batteries. The eco-friendly concept runs through manufacturing. Say NO to harmful substances together such as Hg/Cd/Pd. Less than 1% - self-discharge rate of CZVV 9v li-ion rechargeable battery ensures 85% capacity maintenance after 36 months of non-use. Longer 1300x service life - The Energy is About to Shift - a wonderful combination of electricity and chemistry. BulletPoint2 : ≤4H Strong Fast-Charge: Support 4-channels of fast charging at the same time. Preset with 3 charging models - Trickle charging, Constant Current charging, and Constant voltage charging, 5V 2A input ensures batteries to 100%. LED lights on the charger allow you to check the charging status anytime. 6-in-1 IC chip with a leak-proof design, safety protection comes first, and hassle-free use. *Unauthorized use of other brand chargers may cause accidents. BulletPoint3 : Wide Applications: Compatible with most 9V battery-powered devices, like 9-volt smoke sensors, garage door openers, alarm clocks, wireless microphones, radios, electronic toys, flashlights, remote controls, massagers, transceivers, guitars, bass guitars, metal detectors, multi-function instruments, etc. BulletPoint4 : Why 8.7V instead of 9V? - As we all know, the nominal voltage of a Li-ion battery is 3.7V, and the full-charged voltage is 4.2V - better known as the charge cut-off voltage. By connecting two groups of 3.8V High-Energy-Density lithium-polymer cells in series, we fabricated K007 with an EnergyCLSave frame. Under ideal conditions, a fully charged 9-volt battery will maintain a high voltage of about 8.7V(4.35V*2) - the highest voltage among all brands' Lithium-ion 9V batteries can achieve so far. BulletPoint5 : What You Get: CZVV Ultra 850mAh 9V Batteries(4 Count Pack with Output DC 8.7V), CZVV Q019 Pro Individual Portable 4-Bay Charger(Input 5V 2.0A), Type-C Lightning Cable, User Guide, our worry-free 12-month warranty, and friendly customer service Color : 4 Pack 9V Batteries with Charger CompatibleDevices : Smoke Detector CompatibleDevices1 : Laptop CompatibleDevices2 : Smoke Alarm CompatibleDevices3 : Toy CompatibleDevices4 : Radio CompatiblePhoneModels : Smoke Detector ControlMethod : touch ExternallyAssignedProductIdentifier1 : 606829927278 ExternallyAssignedProductIdentifier2 : 0606829927278 Hazmat1 : LITHIUM ION BATTERIES Hazmat10 : CN_SmallLithiumIonBatteryStandalone Hazmat11 : DE_SmallLithiumIonBatteryStandalone Hazmat12 : EG_SmallLithiumIonBatteryStandalone Hazmat13 : ES_SmallLithiumIonBatteryStandalone Hazmat14 : FR_SmallLithiumIonBatteryStandalone Hazmat15 : GB_SmallLithiumIonBatteryStandalone Hazmat16 : IN_SmallLithiumIonBatteryStandalone Hazmat17 : IT_SmallLithiumIonBatteryStandalone Hazmat18 : JP_SmallLithiumIonBatteryStandalone Hazmat19 : MX_SmallLithiumIonBatteryStandalone Hazmat2 : UN3480 Hazmat20 : NL_SmallLithiumIonBatteryStandalone Hazmat21 : PL_SmallLithiumIonBatteryStandalone Hazmat22 : SA_SmallLithiumIonBatteryStandalone Hazmat23 : SE_SmallLithiumIonBatteryStandalone Hazmat24 : SG_SmallLithiumIonBatteryStandalone Hazmat25 : TR_SmallLithiumIonBatteryStandalone Hazmat26 : US_SmallLithiumIonBatteryStandalone Hazmat27 : US_SmallLithiumIonBatteryStandalone Hazmat28 : ZA_SmallLithiumIonBatteryStandalone Hazmat3 : II Hazmat4 : 9 Hazmat5 : AE_SmallLithiumIonBatteryStandalone Hazmat6 : AU_SmallLithiumIonBatteryStandalone Hazmat7 : BE_SmallLithiumIonBatteryStandalone Hazmat8 : BR_SmallLithiumIonBatteryStandalone Hazmat9 : CA_SmallLithiumIonBatteryStandalone IncludedComponents1 : 2 × 9 Volt Rechargeable Lithium Batteries IncludedComponents2 : 1 × 2 in 1 Charging Cable InputVoltage : 5 volts ItemDisplayDimensions_Height : 1.04 inches ItemDisplayDimensions_Length : 1.8 inches ItemDisplayDimensions_Width : 0.66 inches ItemName : czvv Rechargeable 9V Batteries - High-Performance Lithium-ion Battery 4 Pack with 4-Bay Speed Charger - Leak-Proof Ultra Long-Lasting 8.7 Volt 1300x Cycle Times with a 10-Year Shelf Life ItemPackageDimensions_Height : 12.8016 centimeters ItemPackageDimensions_Length : 5.8928 centimeters ItemPackageDimensions_Width : 10.1092 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 9v-batteries Manufacturer : CZVV ModelName : K007J 1*4 + Q019 ModelNumber : K007J 1*4 + Q019 NumberOfItems : 1 NumberOfLithiumIonCells : 2 NumberOfLithiumMetalCells : 2 PackageLevel : unit PartNumber : CZVV ProductDescription : Rechargeable 9V Batteries - High-Performance Lithium-ion Battery 4 Pack with 4-Bay Speed Charger - Leak-Proof Ultra Long-Lasting 8.7 Volt 1300x Cycle Times with a 10-Year Shelf Life ProductSiteLaunchDate : 2022-06-15T00:00:00.000-07:00 RecommendedUsesForProduct : Camera Reusability : Single Use Size : 2 Pack Style : 9V (Rechargeable) SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 25 UnspscCode : 26111700 Voltage : 8.7 volts WarrantyDescription : Unconditional 12-Months Warranty Wattage : 6.46 watt_hours