1.5V High Power AA Lithium Batteries: Revolutionary technology makes batteries larger in capacity, longer lasting,more powerful in output,ideal for high power products.Such as Xbox, blink(some models unsuitable),digital camera,not compatible with doorbell camera,smoke detectors | 2500 Cycle Life 0V Activation:Rechargeable aa batteries can be charged up to 2500 times, with no memory effect and low discharge rate, saving you a lot of money. Even if the battery is out of power and the voltage is 0V, the charger can directly activate the refresh battery for charging | High-tech Charging Storage Box: The stylish and beautiful box design integrates storage and charging. The lithium batteries can be placed inside when not in use,saving a lot of space,very portable.Note:Our charger & lithium battery can only be used together and are not compatible with other brands | Smart LED Display: The light flashes green to indicate charging,steady light indicate fully charged. Steady red light indicates Adapter incompatible/cable damaged/temperature too high,low.Flashing red light indicates battery cannot be charged, or the charging is overcurrent, overvoltage,undervoltage | 3H Fast Charging Type C Input Design: You can charger it with PC/Plug/Power Bank/Car charger,but 3H fast charging requires 5V3A power supply | Battery Compatibility: Battery is not compatible with smoke detectors & doorbells.Suitable for solar lights, remote control car, flashlight,recorder,wii.If the battery power is consumed quickly or charger light is red,please contact us to solve the problem