Upgrade your flashlight power with the Weltool INR18-33 18650 Flat Top Rechargeable Battery. Designed for high-performance flashlights like the Weltool F11R, this 3300mAh cell delivers long-lasting, consistent output. Built with the trusted Weltool INR series quality, it ensures safe operation and dependable performance in demanding conditions.
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3300mAh High Capacity – Extended runtimes for your F11R flashlight.
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Flat Top 18650 Design – Compatible with flashlights requiring flat-top cells.
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Safe & Reliable – Features reverse polarity protection, low-voltage cut-off, and over-discharge safeguards.
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Durable Construction – Built to endure up to 800 charge cycles while retaining 70% capacity.
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Temperature-Ready – Works in a wide range of environments from -20°C to +60°C.
Specifications (Table):
| Specification |
Detail |
| Battery Model |
INR18-33 |
| Capacity |
3300mAh (Typical 3200mAh) |
| Voltage |
3.6V |
| Internal Resistance |
≤25mΩ |
| Discharge Current (Room Temp) |
9.9A |
| Discharge Current (-25~45℃) |
3.3A |
| Charging Current |
1.65A |
| Overcharge Protection Voltage |
4.2±0.05V |
| Over-discharge Protection |
2.5±0.05V |
| Cycle Life |
800 cycles (70% capacity retained) |
| Operating Temperature |
-20°C to +60°C |
| Charging Temperature |
0°C to +45°C |
| Dimensions |
18.35mm × 65.05mm |
| Weight |
48g ±2g |
