Powertac - 2600 mAh Lithium-ion 18650 Rechargeable Battery

The Powertac 2600mAh 18650 Rechargeable Battery is purpose-built for 18650-compatible torches and devices, delivering high energy density in a lightweight cylindrical cell. At 3.6V nominal and 2600mAh capacity, it's a reliable power source for tactical torches, EDC lights, and any 3.6V device where consistent output and low weight matter. It's manufactured under ISO9001-2000 quality standards and tested to IEC (International Electrotechnical Commission) specifications for capacity, quality, and service life.

What sets this cell apart is the internal PCB protection circuit, a patented design that prevents over-voltage at 4.25V and under-voltage at 2.5V, safeguarding both the battery and the device it powers. Rated for over 500 charge cycles with 90% of initial capacity retained at 400 cycles, this is a battery built for repeated field use rather than a one-season replacement.

Features

• Internal PCB Protection: Patented protection circuit prevents over-voltage (cut-off at 4.25V) and under-voltage (cut-off at 2.5V), protecting the cell and connected device during charge and discharge.
• High Capacity 18650 Cell: 2600mAh nominal capacity (2450mAh minimum) at 3.6V average, in a standard 18650 form factor weighing approximately 46g.
• Long Cycle Life: Rated for 500+ charge cycles with 90% of initial capacity retained at 400 cycles.
• Wide Operating Temperature Range: Performs across -20°C to 50°C, reliable through cold overnight conditions and sustained use in Australian summer heat.
• Quality Tested to IEC Standards: Manufactured under ISO9001-2000 and independently tested to International Electrotechnical Commission standards for capacity, quality, and service life.

Specifications

• Brand: Powertac
• Cell Type: Lithium-Ion (Li-Ion) 18650 cylindrical rechargeable
• Nominal Capacity: 2600mAh
• Minimum Capacity: 2450mAh
• Nominal Voltage: 3.6V
• Cut-off Voltage: 3.0V
• Over-Voltage Protection: 4.25V
• Under-Voltage Protection: 2.5V
• Internal Impedance: ≤180 milliohm (with PTC)
• Max Charge Current: 1.5C
• Max Discharge Current: 1.5C (continuous)
• Charge Voltage: 4.2V
• Cycle Life: 500+ cycles (90% capacity retained at 400 cycles)
• Operating Temperature: -20°C to 50°C
• Diameter: 18mm (±0.2mm)
• Height: 66mm (±0.2mm)
• Weight: Approx. 46g
• Quality Standard: ISO9001-2000
• Testing Standard: IEC (International Electrotechnical Commission)

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