2 slot charger:Dimensions: 104 x 47 x 30 mmWeight: 50GInput: DC5V / 1AOutput: 3.7 ~ 4.2V / 500MACompatible: 3.7V & 4.2V lithium battery 4 slot Battery:100% Brand New And High Quality.Features: independent chargingPower supply mode: Regular USB power supplyInput voltage: DC 5V 1-2AOutput voltage: DC 4.2V 1000mACompatible battery model: 10440 14500 16340 16650 14650 18350 18500 18650Charging status indicator: Red light: charging. Green light: Charging completedSix protections: overcharge protection, overcurrent protection, over temperature protection, short circuit protection, reverse connection protection, over discharge protectionProduct Certification: CE/EMC/FCC Certificatio 16340 Rechargeable Battery :Model: 16340, as known as CR123ADurable rechargeable Li-ion batteriesBattery Dimensions: approximately 32.5mm (Length) x 16.5mm (Diameter)Suitable for digital cameras, flashlight torches and other electronics productsCapacity: 1300mAhVoltage: 3.6V