No need for an external charger! Just use a USB port. Simply remove the cap and plug it in to recharge. No cables or extra hassle. It has a built-in USB plug for charging. Specifications: Height 63mm, Weight 30g, Diameter 19mm, Standard Recharge Current 0.5A, Recharging Time 3hr, Recharging Voltage 5V, Amp Hour Rating 1200mAh, Connection Type Nipple, Rechargeable, Battery Chemical Composition Lithium Ion, Battery Type 18650, Battery Peak Current 1A. Warranty: 3 Months.


Using these 18650 batteries is super easy. When your battery runs out, don't worry about finding a charger. Just take off the cap and plug the battery directly into a USB port. It'll start recharging right away. As for the time, it usually takes about 3 hours to fully charge. When you're using the battery, make sure the connection type, which is a nipple, is properly attached. Also, be careful not to over - charge it. To keep your batteries in good shape, store them in a cool and dry place. And remember, they come with a 3 - month warranty, so if there are any problems during this time, you're covered.