Description
The 18650 3.7 V lithium-ion battery is a rechargeable cylindrical power cell commonly used in compact and portable electronics. This particular model provides 1200 mAh of capacity, making it suitable for low- to medium-drain applications where reliability, rechargeability, and improved runtime are important.
Key Features
- Battery Type: Lithium-ion (Li-ion)
- Nominal Voltage: 3.7 V
- Capacity: 1200mAh
- Chemistry: Rechargeable Li-ion, offering good energy density and stable discharge performance
- Terminal Type: Flat-top or button-top depending on the assembly
-
Safety Features (if protected):
- Overcharge protection
- Over-discharge protection
- Short-circuit protection
- Size: Standard 18650 format (18 mm diameter × 65 mm length)
- Weight: Typically 40–45 g
Specification
- Operating Voltage Range: 3.0 V to 4.2 V
- Full Charge Voltage: 4.20 V
- Nominal Voltage: 3.6–3.7 V
- Recommended Discharge Cut-off: 3.0 V (for longer cycle life)
- Cycle Life: Several hundred cycles depending on charging habits
- Recommended Continuous Discharge Current: 1.2 A (0.4C rate)
- Maximum Discharge (short bursts): Up to ~2 A, depending on internal resistance and quality
Application
- LED flashlights
- Portable electronics
- Power banks (low-capacity types)
- DIY and hobby electronics
- IoT and sensor modules
- Backup power circuits
- Small handheld devices