Keeppower 4000mAh 18650 protected li-ion rechargeable battery 3.6V P1840C 2 PACK

Description

P1840C

1. Protected 18650 Li-ion Rechargeable Battery P1840C
2. Typical Capacity: 4000mAh (Min. Capacity: 3900mAh)
3. Nominal Voltage: 3.6V/3.7V
4. Standard Charging/Discharging current: 800mA
5. Maximum Charging current: 2A
6. Maximum Discharging current: 8A
7. In Built Safety Circuitry (IC made in Japan)
8. Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
9. 4.2 volts max voltage and 2.5 volts cut-off voltage
10. Over 500 charge-discharge cycles
11. Customize option: Top (Button/Flat), Max. discharge current, Private label,Packing…
12. Battery Certification : UN38.3, CE, ROHS, MSDS, Regulation (EU) 2023/1542, UL2054, IEC62133

Application:

1. Lighting Devices
   High-power flashlights & tactical flashlights: Delivers long-lasting high lumen output for outdoor, duty, and rescue operations.
   Headlamps, camping & work lights: Stable voltage ensures consistent illumination for night work or outdoor activities.
2. Drones (Small / Toy Grade)
   Provides lightweight, high-energy-density power for small drones or toy-grade aircraft, extending flight time.
3. Portable Fans
   Compatible with handheld, neckband, and desktop portable fans – 3500mAh supports extended cooling time.
4. Night Vision Backup Battery
   Serves as backup power for night vision goggles or infrared observation devices, ensuring continuous operation during night missions or field surveillance.
5. Thermal Devices
   Provides stable, low-internal-resistance power for handheld thermal cameras and industrial thermometers, ensuring image quality.
6. Smart Locks
   High-capacity with built-in protection circuit prevents overcharge/over-discharge, ideal for smart lock systems requiring long-term reliable power.
7. Medical Devices
   Suitable for portable medical instruments such as glucometers, blood pressure monitors, therapy devices, and medical lighting – fully certified for safety.