8pcs 21700 rechargeable lithium batteries, 3.7V 17500mWh. Ultra-high capacity for long-term use. Used for small fans, flashlights, remote control cars. Rechargeable design, sustainable energy.

1. Exceptional Compatibility: MINGSCI's 21700 rechargeable lithium batteries are a versatile power solution. With a 3.7V voltage and 17506mWh capacity, they fit a wide range of devices like LED flashlights for camping adventures, solar lights to brighten your outdoor space, racing toys for high-speed thrills, game controllers for intense gaming sessions, emergency lights during power outages, portable devices on the go, headlamps for hands-free illumination, toys to keep kids entertained, remote controls for convenient operation, and doorbells for a reliable alert system. 2. Product Parameters: These batteries feature a standard 3.7V voltage and a substantial capacity. Before purchasing, make sure your device is compatible. They come pre-charged and can be recharged over 1000 times, retaining 60% power even after 2 years of non-use. Their low discharge multiplier and lack of memory effect ensure reliable and long-lasting performance. Stringently tested under quality control standards, they offer a premium and safe power source. 3. Safe and Responsible Usage: For safe use, it's recommended to fully charge the battery before first use, which might take longer initially. Use a dedicated Li-ion charger or a compatible device, preferably the MINGSCI Li-ion charger. Ensure proper insertion by observing the pole indicators (+/-). Store in a cool, dry place away from sunlight and heat when not in use. Carry with a dedicated battery case or cover. Dispose of according to local recycling regulations.