






Klarus 21GT-50 INR 21700 5000mAh 3.6V Protected High-Drain 15A Lithium Ion (Li-ion) Button Top Battery
- Li-ion rechargeable chemistry for reliable power in flashlights and more
- 5000mAh capacity helps deliver long runtimes on each charge
- 500+ charge cycles for a battery that lasts the long haul
- Built-in PTC protects from harm in everyday use - a safe option for electronics
- Size: 21700
- Voltage: 3.6
- Rechargeable: Yes
- Chemistry: Li-Ion
- Capacity (mAh): 5000
- Terminal Type: Button Top
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Description
Klarus 21GT-50 21700 Battery
5000mAh | 15A Discharge | Button Top
Klarus comes out with some of the most power-packed cells on the market, and their first-ever 21700-sized cell is no exception. The Klarus 21GT-50 is only larger than an 18650 but boasts nearly double the power at most with an impressive 5000mAh capacity. The 15A drain will take care of most high-drain devices and can charge back up to 100% over 500 times within 2 hours. The built-in PTC keeps you and your devices safe against over-charge, over-discharge, over-current, and short-circuit accidents. Klarus recommends this 21700 battery for compatible flashlights, powerbanks & battery packs.
- Notable Features
- » Fully metal case is resistant to pressure and shock for improved durability over time
- » Battery recharges in just 2 hours with a 5000mA charging current
- » 15A continuous discharge supports high-drain devices with ease
- » Multi-layer protection, including PTC overcurrent protection, microporous insulation protection, pressure relief valve protection, and a high-performance IC protective plate for peak safety and improved performance overall
Item Details
| Brand | Klarus |
| SKU | KLARUS-21GT-50 |
| MPN | 21GT-50 |
| UPC | 6954424402824 |
| Size | 21700 |
| Voltage | 3.6 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 5000 |
| Chemistry | Li-Ion |
| Shelf Life | 3 Years |
| Packaging | Boxed |
| QTY Per Package | 1 |
| California Residents | see Prop 65 WARNINGS |
Specifications
| Size | 21700 |
| Voltage | 3.6 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 5000 |
| Terminal Type | Button Top |
| Protected | true |
| Integrated Charge Port | No |
| Max. Discharge Rate | 15 |
Unit Dimensions
| Length | 2.98 in (76 mm) |
| Diameter | 0.85 in (22 mm) |
| Weight | 2.54 oz (72 g) |
Certifications & Transport
| Certifications/Standards | ANSI, CE, RoHS |
| Country Of Origin | China |
| HTS Code | 85076000 |
Packaging/Shipping Dimensions
| Length | 3.33 in |
| Width | 2.2 in |
| Height | 1.03 in |
| Shipping Weight | 0.21 lb |
Documents
Additional Details
| Packaging | Boxed |
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
Bright Buys
- Reliable lithium chemistry with a 10 year shelf life
- Regarded as one of the highest quality CR123A batteries on the market
- Used in LED flashlights, alarm systems, ranger finders and more
- Cells are lightweight, durable and ideal for long term storage
- Jacket style may vary
- Ideal for low-drain applications that require a primary battery to provide constant power
- 10-year shelf life - stock up for emergencies!
- The best choice for consistent power, great in low-drain devices like remotes
- Safe and reliable - capable of performing in high or low temperatures
- 11-in-1 card sized tool fits in your wallet or on a keychain!
- Packed with handy tools including a screwdriver & 7 wrench settings
- Serrated saw and straight-edge knife for quick cutting jobs
- Can + bottle openers for campsite meals or end-of-shift relaxation
- Four-channels saves time by charging multiple batteries at once.
- Capable of charging multiple chemistries by automatic battery detection.
- LCD display reveals the charging progress, battery type, voltage, and charging current.
- Automatic power-off function cuts off the current when charging is complete.
- Extremely compact and powerful EDC
- Max output of 3,000 lumens with a max throw of 229 meters
- Dual fuel and available with extender for use with a 26650
- Equipped with 4 x CREE XPG3 LEDs for maximum illumination
- 225mAh capacity drives long runtimes for watches and electronics
- CR2032 coin cells packed with 3V of power
- Convenient 6-piece retail card provides backup batteries
- Easily replaceable primary lithium cells
- Top recommended battery for Apple AirTags
- 3,000 lumens and a 250-meter throw - fierce illumination to light up your backyard
- Multiple output modes are accessible via easy side switch operation
- Strobe, SOS, and beacon modes offer distinct signaling capability
- High-capacity battery supports the light with a maximum 227-hour runtime
- Upgraded to output up to 3,100 lumens with a 1,000ft throw for optimal spotting!
- Offers fast, direct USB-C recharging from outlets, power banks, and more
- Ultra-slim design provides an easy-to-hold, simple EDC lighting solution
- OLED screen monitors performance, including charge level, brightness & beyond
- Pre-shrink wrapped Panasonic CR123A batteries great for OEM use & more
- 1550mAh high capacity keeps lights, alarms & more running longer
- Lithium cells with stable 3V output and strong discharge performance
- Storage life of up to 10 years ensures backups remain ready for use










