LiitoKala Lii-M4 battery chargerSpecific parametersInput voltage: DC 5V / 2AOutput voltage: DC 4.2V / DC 1.48VOutput current4.2V 1000mA * 2 / 500mA*41.48V 500mA*4Battery specifications: 26650,21700,18650,18350, 20650,14500, AA, AAA, etc.Termination method: intelligent voltage monitoringDimensions: 146mm (length) * 100mm (width) * 33mm (height).Buy it to AliExpress