Description
The Thrunite 18650 3100mAh IMR Battery 3.7V High-Drain Protected Button Top is a high-performance battery designed for high-drain devices, ideal for camping, hiking, and emergency use. Its 3100mAh capacity can power a flashlight like the Thrunite TN36 for extended periods, ensuring reliable illumination during a night hike. With a built-in protection circuit and IMR chemistry, it offers safe and stable operation. Featuring a 1-year warranty, this Thrunite 18650 Battery suits outdoor enthusiasts, professionals, and EDC users.
Reliable Power for Outdoor Use
The Thrunite 18650 3100mAh IMR Battery delivers 3.7 volts of power with a capacity of 3100mAh, designed specifically for high-drain devices like the Thrunite TN36 flashlight. It features a high-drain IMR (Lithium Manganese) chemistry with a maximum continuous discharge rate of 15A, operating safely from -20°C to 75°C. The battery includes a protection circuit to prevent over-charging, over-discharging, and short-circuiting, ensuring safety and longevity. It can handle up to 250 full charge/discharge cycles before capacity drops to 60%.
Durable and Compact Design
The Thrunite 18650 3100mAh IMR Battery is designed for durability, with a button-top configuration and dimensions of 64.85mm in length (±0.15mm) and 18.33mm in diameter (±0.07mm), weighing 49g. Its IMR chemistry provides stability and safety, even under high-drain conditions. The battery’s discharge cut-off voltage is 2.5V, with a full charge voltage of 4.2V (±0.05V).
Designed for Outdoor Use
The Thrunite 18650 3100mAh IMR Battery is tailored for outdoor enthusiasts, professionals, and EDC users needing a reliable power source for high-drain devices like flashlights during camping, hiking, or emergencies. The battery’s 15A discharge rate supports high-performance needs.
Key Features and Specs
- Capacity: 3100mAh (Max)
- Voltage: 3.7V (Nominal), 4.2V (Full Charge), 2.5V (Discharge Cut-off)
- Max Discharge Rate: 15A (-20°C to 75°C)
- Chemistry: IMR (Lithium Manganese)
- Charge Cycles: 250 (Capacity drops to 60% after)
- Protection: Protected Circuit (Over-Charge, Over-Discharge, Short-Circuit)
- Style: Button Top
- Dimensions: 64.85mm (Length, ±0.15mm) x 18.33mm (Diameter, ±0.07mm)
- Weight: 49g
- Warranty: 1 Year
Package Contents
- Thrunite 18650 3100mAh IMR Battery
- User Manual
Note: Ensure the battery is used with compatible Thrunite devices, as it is not universally compatible with all 18650 devices. Store at around 50% charge in a dry place to maintain battery health during long periods of non-use.

