Suitable battery: 1.5VAA AAA alkaline battery.
4 Slot USB Intelligent Smart Charger Lithium 4.2V Li-ion Batteries Charger Port
4 Slot USB Intelligent Battery Charger For 9V Li-ion Ni-Mh Cd Batteries Charger
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18650 Battery Charger 4-Slot USB-C Fast Charging, 21700 Vape Lithium Battery Charger, Intelligent IC with Smart Protection, LED Charging Indicator, Travel-Friendly Universal Compact Design
