Panasonic NCR18650BD 18650 Flat-Top Li-Ion Battery 3.6V 3200mAh (139625)

The Panasonic NCR18650BD is a high-capacity 18650 lithium-ion cell with a flat-top terminal, optimized for high-drain applications where both energy density and discharge capability matter. Unlike standard 18650 cells, it combines a 3200 mAh capacity with a 6.4 A continuous discharge rating, making it suitable for power tools, e-bikes, medical devices, and high-performance flashlights.

Highlights

• Nominal voltage: 3.6 V, capacity: 3200 mAh
• Flat-top design for pack building and devices with flat contacts
• Max continuous discharge: 6.4 A, pulse discharge: 10 A (<5 s)
• NCA chemistry for high energy density and stable cycling
• Unprotected cell – requires external protection circuit if needed

In daily use

This cell delivers consistent voltage under load, with an internal resistance of approximately 35–45 mΩ. It supports standard charging at 1.6 A and fast charging up to 3.2 A, with a full charge voltage of 4.2 V. Operating temperature ranges from -20°C to 60°C during discharge and 0°C to 45°C during charge, ensuring reliable performance across many environments.

Full specifications

• Battery technology: Lithium-Ion (Li-Ion)
• Battery voltage: 3.6 V
• Capacity: 3200 mAh
• Energy: 11.52 Wh
• Terminal type: Flat-Top
• Rechargeable: Yes
• Chemistry: Lithium Nickel Cobalt Aluminum Oxide (NCA)
• Max continuous discharge current: 6.4 A
• Max pulse discharge current: 10 A (<5 seconds)
• Standard charge current: 1.6 A (0.5C)
• Max charge current: 3.2 A (1C)
• Full charge voltage: 4.2 V
• Discharge cut-off voltage: 2.5 V
• Internal resistance: 35–45 mΩ (at 1 kHz)
• Operating temperature (discharge): -20°C to 60°C
• Operating temperature (charge): 0°C to 45°C
• Cycle life: ~500 cycles to 80% capacity
• Protection circuit: Unprotected
• Typical applications: Power tools, e-bikes, medical devices, laptops, flashlights

Final note

For battery packs, ensure proper balancing and protection circuitry, as this cell does not include built-in protection.