[Reliable high quality battery] - Diameter: 18.8 mm, Length: 65 mm. The Powo 18B battery is tested by professional testers under strict quality control standards. Get CE, UL certified. Completely against overheating and leaking, so you can safely charge and use.Product patent number:015037694-0001. (Not AA/AAA batteries, not button top battery)
Really large capacity and great performance: Powo 18B battery has the true 3000 mAh, supports a stable 3.7 V output voltage, makes the devices more stable and lasts longer, great replacement batteries for frequently used devices. A fully charged battery can operate your torch or headlamp for 2-4 hours / doorbell for 3-6 months / small fan for 3-4 hours.
Multi-use and 1000+ cycles: no memory effect. Can be charged over 1000 times. Perfect for flashlight, camera, drone, headlamp, RC car, etc.
Battery case for easy carry: each package comes with 4 batteries and 1 compact battery compartment (3 x 2.7 x 0.78 inches). You can easily put it in your pocket as backup batteries.
Package includes: rechargeable 3000 mAh battery x 4, battery compartment x 1, battery protective case x 1. Note: The battery requires a charger (not included) to charge.