Key Features
- Massive 6000mAh capacity for extremely long runtime
- 600+ recharge cycles help reduce replacement cost
- 10A continuous discharge supports steady performance
- Built-in protection circuit ensures safe operation
- Optimized for safe charging when used with XTAR chargers
Overview
The XTAR 21700 6000mAh Lithium Battery delivers powerful, long-lasting energy ideal for flashlights, work tools, and portable devices. With its high capacity, dependable 10A discharge capability, and integrated safety board, this battery supports consistent, stable performance for both everyday and professional use.
Applications / Uses
- Everyday carry and high-output flashlights
- Outdoor and household lighting equipment
- Portable electronics requiring extra runtime
- Professional inspection tools
- Hobby and specialty devices
SPECIFICATIONS
| Model | 21700 |
| Nominal Capacity | 6000mAh |
| Minimum Capacity | 5850mAh |
| Nominal Voltage | 3.6V |
| Discharge Cutoff Voltage | 2.5V |
| Max Continuous Discharge | 10A |
| Internal Resistance | ≤45mΩ |
| Cycle Life | 600+ |
| Charging Voltage | 4.2±0.03V |
| Charging Current | 3A (Standard), 4.2A (Max) |
| Discharge Overcurrent Protection | 11–14A |
| Transport Voltage | 3.6–3.9V |
| Protected | Yes |
| Positive Terminal | Button Top |
| Operating Temperature | -20 to 60℃ |
| Storage Temperature | -5 to 35℃ (Best ≤25℃) |
| Dimensions | φ21.8±0.3 × H74.8±0.5 mm |
| Net Weight | ≤76g |
| Certificates | RoHS, CE |
| Data Specification Sheet: | XTAR 3.6V 21700 6000mAh Lithium battery Datasheet |
⚠ Important Safety Warnings
While this battery is equipped with built-in protection circuitry to help prevent overcharging, over-discharging, and short circuits, improper handling or misuse can still result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury or property damage. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Intended Use: This battery is designed for use in flashlights, headlamps, and similar devices that require a button top configuration. Ensure compatibility with your device before purchase or use.
- Protection Circuit Limitations: While the protection circuit provides additional safety, it cannot prevent damage caused by misuse, including exposure to liquids, extreme heat, or physical damage.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects (e.g., keys, coins, tools) that can cause a short circuit. Do not store loose batteries in pockets, bags, or other uncontrolled environments.
- Inspection: Do not use if the battery is dented, leaking, bulging, or if the outer wrapper or button top is damaged.
- Charging: Use a smart charger specifically designed for button top protected batteries. Do not exceed the battery's voltage and current specifications. Never leave the battery unattended while charging.
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Prohibited Activities:
- Do not expose the battery to water, fire, or high heat.
- Do not modify, puncture, crush, or attempt to disassemble the battery.
- Do not use the battery if it becomes unusually hot during use or charging.
- Emergency Response: If the battery overheats, emits smoke, or shows other signs of failure, stop using it immediately. Move the battery to a safe, non-flammable surface (e.g., sand or concrete) and follow emergency protocols.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols.
It is the reseller's responsibility to ensure all product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices.
Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.