Protected 21700 Batteries Li Ion 80g Impact Resistant 21700 Battery High Drain
XTAR INR 21700-50E 5000mAh Li-ion battery, designed for high-performance flashlights, delivers 10A continuous discharge. It features all-around protection (over-charge, over-discharge, short-circuit), 500+ recharge cycles, low self-discharge, and extreme temperature resistance (-20°C~60°C). RoHS & CE certified, it's cost-effective, eco-friendly, and ensures long-lasting, safe power for demanding tasks.
- 3.6V protected 21700 battery
- Button top design
- Constant discharging current: 10A
- Cell: INR21700-50E
- Low internal resistance, high energy efficiency
- Impact resistant and eco-friendly
| Nominal Capacity | 5000mAh |
| Nominal Voltage | 3.6V |
| Standard Charging Voltage | 4.2V |
| End-of-discharge Voltage | 2.5V |
| Continuous Discharge Current | 10A |
| Cell | INR21700-50E |
| Size | φ21.5±0.3mm × 74.5±0.5mm |
| Protected or Not | Yes |

Established in 2006, XTAR is a leading provider of high-quality lithium-ion batteries, smart chargers, and LED flashlights. Based in Shenzhen, we integrate R&D, production, and sales to deliver innovative power solutions. With over 20 years of expertise, XTAR is your trusted partner for reliable energy products, offering customized solutions for OEM and wholesale clients.
We operate our own factory with efficient production processes ensuring precise production cycles. Manufacturing under our original brand guarantees product consistency and provides convenient maintenance and after-sales service. XTAR integrates the brand values of safety, reliability, and innovation into every product.



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