Note: This link only includes the battery, not the charger. However, this constant voltage lithium battery requires a Kratax charger or equivalent, so we recommend purchasing a set. Widely used: This AA lithium battery up to 3A current, which can be better applied to high current devices, fit for game controller, outdoor camera, motorized toys, remote controls, smart home devices, microphone, medical devices etc. (Not applicable to camera flashes) Stable output: Kratax 1.5v rechargeable AA battery provide an approximately equal and stable voltage to the device until it runs out of power, the fully intelligent control IC chip makes it more reliable to use. The cycle time is more than 1600 times, one AA lithium battery is equivalent to 1600 disposable batteries. Multi-Protection: Intelligent control of the entire charging process, built-in protection device to prevent overcharge, overvoltage, overcurrent, over discharge, the charger has reverse charge protection can protect the ba