Efest IMR 21700 Unprotected High-Drain Lithium Ion Flat Top Battery
3.7V, 3700mAh
High draining and long-lasting, the Efest 4549 IMR 21700 Li-Ion Flat To Battery is the perfect power source for your personal flashlight! This impressive cell features an incredibly stable Lithium Manganese Oxide chemistry, which is able to provide 35 Amperes of current, more than enough to power your highest-draining flashlights. The IMR 21700 has a sizable 3700 mAh capacity, giving you plenty of usage before needing to recharge. The unprotected cell is compatible with rapid chargers, bringing it back to full power in no time!
Features:
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- Stable Lithium Ion chemistry
- CE, RoHS, and MSDS Certified
- Comes with Efest's 3 Month Warranty
Specifications:
- Battery Size: 21700
- Battery Chemistry: IMR (LiMn(2O4)
- Nominal Voltage: 3.7V
- Nominal Capacity: 3700 mAh
- Max Charging Current: 4.0A
- Recommended Charging Current: 2.0A
- Estimated Charge Cycles: 500 cycles
- Max Discharge Current: 35A
- Charging Temperature Range: 32°F to 113°F (0°C to 45°C)
- Operating Temperature Range: -4°F to 167°F (-20°C to 75°C)
- Shelf Life: 10 Years
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Dimensions:
- Length - 0.83" (21 mm)
- Diameter - 2.76" (70 mm)
