Dual Charging Method: This battery can be conveniently charged with either AstroAI’s proprietary charger or a standard USB Type-C cable. This versatility allows you to recharge it anytime, anywhere. (Note: the AstroAI proprietary charger and type-C cable are not included.)Great Compatibility: The 4Ah rechargeable battery is compatible with several AstroAI products, including model JY23P160-2301812, JY16P160-18, LS40791, and the AIRUN TC3. This battery pack provides great convenience, reliability, and output- whatever your power needs are. This is a great addition to the toolbox for families, trips, and the outdoors.Safety and Durability: This battery pack features overheat protection, overcharge protection, and short circuit protection; when any of these occur, it automatically shuts off to ensure your safety. It also features LED battery indicators that display the battery level in real-time, helping you better monitor power levels. The built-in BMS system prolongs the battery's service life.【DUAL POWER SUPPLY】: DC 12V power supply and 20V rechargeable battery pack power supply make the inflation more easily. The bottom is stable enough. You don't have to worry about it running out of the battery during the trip. This item includes a battery and a charger(The Battery and Charger are also sold separately).【MULTIPLE PURPOSE&EASY TO USE】: The air compressor is compatible with 汽车用品, SUVs, cars, motors, bicycles, and basketball-size inflatable products. Note: not suitable for large truck tires. Attached with an exclusive storage bag, easy to carry. The LED light also allows you to inflate in the dark. Father's Day present