EBL 4-Pack 600mAh 9V Lithium Ion Rechargeable Batteries with 4-Bay Smart Charger - Perfect for Smoke Detectors, Guitar Pedals & Medical Devices

Charging Independently: With 4 independent charging slots, it can charge 1-4 pcs 9V Li-ion/Ni-MH/Ni-CD rechargeable batteries randomly.

LED Display: The smart LED indicators show the charging progress: on-charging; off-charge completed. No manual timing required, smart and convenient.

MCU Control Technology: With MCU control technology, this 9V battery charger provides constant current and constant voltage for your batteries. Once the Voltage reaches 8.1V, the LED indicators will slowly become darker and turn out.

Low Self-discharge: Improved low self-discharge makes the EBL 9V 6F22 rechargeable battery still maintain 75% of capacity after 3 years of non-use.

No Memory Effect: The 9V?Lithium Rechargeable Battery comes with precharged, no memory effect, can be used at any time.

Compatible: The 9V 6F22 battery is recommended for smoke alarms, professional audio and medical devices.