Independent Charging Slots: With 4 independent charging slots, the 9V battery charger can charge 1-4 pcs 9V Li-ion/Ni-MH/Ni-CD rechargeable batteries randomly.

Intelligent Current Output: The Li-ion Battery Charger Provides 400mA output for single battery charging, or 150mA per battery when charging all four, for efficient and rapid charge times.

Smart LED Indicators: The smart LED indicators show the charging progress: red for charging and green for fully charged, offering a convenient and manual-timing-free experience.

MCU Control Technology: This lithium battery charger utilizes microcontroller unit technology for constant current and constant voltage charging, with LED indicators dimming and turning off once the voltage reaches 8.1V.

Lithium Battery Specific: Designed exclusively for charging 9V lithium batteries, not suitable for other types of batteries.