CR2 USB Lithium Ion Battery

  • Model: CR2
  • Part Number: CR2UI
  • Nominal Voltage: 3.7V
  • Nominal Capacity: 300mAh
  • Stored Energy: 1.11Wh
  • Product Type: Lithium ion battery
  • Max Dimensions: 145.00mm x 83.00mm x 32.00mm
  • Approx Weight: 850.00g
  • Lead Time: 15~30 days
  • Origin: China
  • Availability: In Stock

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CR2 USB lithium ion battery is rechargeable and rated at 3.7V 300mAh with a standard CR2 size and a universal type-c USB charging port. Based on lithium ion technology with high energy density, this type of battery has long lasting time, long cycle life, no memory effect, recycling, energy saving, eco friendliness and other advantages of lithium ion batteries. It is easy and convenient to charge anywhere directly with a universal USB cable and no extra battery charger required. They can completely replace dry batteries and Ni-Mh/Ni-Mh batteries, and are widely used in consumer electronics.


  • High energy density, steady voltage, low self discharge rate. Lasting longer at the same capacity.
  • Long cycle life, no memorry effect, recycable, economic and eco friendly. Best replacement for disposable batteries.
  • Integrated smart IC chip ensures battery efficiency and safety. It can provide multi protections against over charge, over discharge, over current and short circuit.
  • Simplely and conveniently charging with type c usb plug. Inbuilt LED charging indicator showing charging process and indicating red charging and green fully charged.
  • Wide operation temperature range. Charge: 0~45°C; discharge: -20~60°C; storage: -20~40°C.
  • Advanced intelligent current limiting technology, two hour full charge at the fastest, more efficient, energy saving and wide applications.


Bluetooth devices, digital devices, drones, intelligent wearable devices, digital medical devices, financial devices, GPS, battery pack equipment, 3C and toys and other high-tech electronic products etc.

Technical Datas
Model CR2
Product Type Lithium ion battery
Configuration 1S1P
Nominal Voltage 3.7V
Nominal Capacity 300mAh
Stored Energy 1.11Wh
Max Charge Voltage 5V
Management Circuit Integrated PCM for protection against overcharge, overdischarge, overcurrent and short circuit.
Termination Pointed stainless steel cap.
Dimensions 26.5mm x 16.3mm
Weight 11.5g approx
Operation Temperature Charge: 0~45°C, Discharge: -20~60°C, Storage: -20~40°C, best 20±5°C for long time storage. Humidity: 85% max.
Charger By a Type C usb cable for about 2 hours, LED Indicators blink when charging, stay on when full charged.
Certifications UL1642 (MH49099), IEC62133, UN38.3, MSDS, RoHS
Remark Pre-charged 3.7V 300mAh over 1000 cycles.
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Tags: CR2 USB Lithium Ion Battery