4 Pack 2500mAh 3.7V Rechargeable Li-ion Batteries Match for Wifi Smart Wireless Security Doorbell, Plus Built-in BMS Protection

Maxlithium 18650 Li-Ion Rechargeable Batteries Features: 🔋 【3.7V Rechargeable Batteries】:18650 rechargeable battery is made of durable materials and the quality is very good. Small size and light weight, high capacity, very portable. It can provide you with the necessary charging power source or better help you in emergencies such as travel, emergencies, outdoor adventures, camping or other dangerous situations. 🔋 【Wide Application】: 18650 3.7V 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 , wireless Smart Video Doorbell Camera etc. 🔋 【Safe and Environmentally Friendly】: 3.7v lithium ion battery 18650 Safe and environmentally friendly, no harm to the environment. The anti-corrosion shell can effectively protect the battery and extend its service life. Preventing waste of non-rechargeable battery. No memory effect, the large battery capacity, allows you to worry no more about your device without power. 🔋 【Safe Protections & Large Capacity】 18650 batteries provides 6 protections, such as temperature protection, short circuit protection, overcharge protection, and overcurrent protection to stabilize the battery. The 18650 rechargeable battery has a life of at least 20% longer than other 18650 batteries. The low self-discharge technology allows the 18650 battery to maintain at least 80% of the capacity. 🔋 【100% Satisfaction】: 18650 rechargeable batteries have passed rigorous testing to ensure normal use, please rest assured to buy. We are full of confidence in our products and unconditionally guarantee the service life of these products. If you have any questions, please contact us. We are happy to help you at any time. Product information: Model: 186501S-25P Battery type: 18650 lithium-ion Capacity: 2500mAh Nominal voltage: 3.7V Weight: 45g ± 1g Rechargeable times: ≥1000 times Internal resistance: ≤20mΩ Limit voltage: 4.2V Working voltage: 2.75-4.2V Size: 65.5mm x 18.5mm (diameter)

Triple over-heat protection over-discharge protection to maximize performance Optimal for high-drain devices Higher energy density, higher capacity, and lower weight than other types of rechargeable batteries Smart BMS technology improved Battery Safety Free from Leakage of Liquid Electrolyte Low Battery Internal Impedance High Capacity at Low Temperature (-10C or below) Related Items Olight Lithium-Ion Rechargeable Batteries PTC within battery and protection circuit board above battery negative Max discharge current 3000mA continuous