Description
The Weltool INR18-38 is a high-capacity 18650 Li-ion rechargeable battery built for performance and reliability. With a 3800mAh capacity, this flat-top cell delivers long runtimes and steady output, making it ideal for high-drain flashlights and other demanding electronics.
Engineered for safety and efficiency, the INR18-38 supports up to 7.6A peak discharge current and can withstand 500+ charge cycles while retaining 70% capacity. Compact and durable, it’s the perfect power source for serious EDC and tactical flashlight users.
Technical Specifications
| Feature | Details |
|---|---|
| Model | INR18-38 |
| Battery Type | 18650 Li-ion, Flat Top |
| Capacity | 3800mAh (Typical) |
| Internal Resistance | ≤25mΩ |
| Nominal Voltage | 3.6V |
| Standard Discharge | 3.8A (-20 to 60℃) |
| Peak Discharge | 7.6A (0 to 45℃) |
| Standard Charging | 1.9A (5℃ – 15℃) |
| Peak Charging | 3.8A (15℃ – 45℃) |
| Overcharge Protection | 4.2 ± 0.05V |
| Over-discharge Protection | 2.5 ± 0.1V |
| Cycle Life | 500 cycles (70% capacity retention) |
| Charging Temp. | 0℃ to +45℃ |
| Discharge Temp. | -20℃ to +60℃ |
| Storage Temp. | -20℃ to +40℃ (≤3 months) |
| Dimensions | 18.35 ± 0.2 mm (diameter) × 65.05 ± 0.2 mm (length) |
| Weight | 48 ± 2 g |
Key Features
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High Capacity: 3800mAh for extended flashlight runtimes
-
Flat-Top Design: Compatible with most high-drain flashlights and devices
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High Discharge Performance: Up to 7.6A peak discharge for powerful output
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Durable & Reliable: Retains 70% capacity after 500 charge/discharge cycles
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Safe & Efficient: Built with overcharge and over-discharge protection parameters
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Compact Power: Lightweight and portable for EDC flashlight users