3.7 Volt Rechargeable Battery, 3500mAh Rechargeable Battery via Type C USB, Button Top Battery High Power Long Lasting for Headlamp, LED Flashlight, emergency lights, etc (2pcs Pack+USB Cable) ZX850

Specification & Application: Quantity: 2 Pack. Battery type: 3.7V rechargeable battery. Capacity: 3500mAh, Voltage: 3.7V, Size: 67*18*18mm, Type: button top battery (Not flat top batteries. Please Choose a suitable type for your devices): rechargeable battery type has great adaptability, which can be widely used for electronic devices, such as LED flashlights, emergency lights, portable devices, power bank, headlights, toys, remote controls, etc

Li-Ion technology with high capacity 13000mWh/3500mAh: The Type C USB Rechargeable Battery features advanced Li-Ion (Lithium-Ion) technology, which provides several benefits for users. Li-Ion batteries are known for their higher energy density, meaning they can store more energy in a smaller size compared to other types of batteries.

3.7V Constant Voltage: The voltage of the batteries stays at a constant 3.7V which provides a steady voltage until the whole cell is depleted.

Fast Charging, fully charged in 2hr. USB-C charging port enables faster charging speeds compared to traditional chargers, saving you time, and ensuring your batteries are ready to use. USB-C charging port ensures faster charging compared to traditional micro-USB ports.

Low Self-Discharge Rate & Long Life: Designed with a low self-discharge rate, these batteries can hold their charge for extended periods of time and the battery has over 1000 charge cycles which makes them ideal for Arlo cameras, sensors, keyless locks, photo flash and flashlights, etc.

Safety: This rechargeable battery is equipped with multiple safety features to protect against overcharging, over-discharging, short-circuiting, and excessive temperature, ensuring safe and reliable operation and free from Mercury & cadmium.