The 2 slot charger will charge the lithium batteries when plug in, and the indicator light display in red, then turn into green after fully charged. (Note: The Indicator light turns into green once the battery voltage reaches 4.1V-4.2V.)
The charger uses the MCU control technology, providing the constant current and constant voltage safety model.
Advanced MCU control and- function, over-heat, and over-current protection, short-circuit protection, and defective battery detection.
【Small and Durable】
USB Input with small but durable body, you can charging your batteries with USB adapter, car charger, power bank, anywhere you want to go.
In most cases, if you are using rechargeable batteries instead of disposable batteries. You won’t lose too much performance: the best rechargeable batteries can power your device with just one charge, which lasts as long as most high-quality disposable batteries. Over time, the cost is very low.