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.
| Brand | Klarus |
| SKU | KLARUS-21GT-50 |
| UPC | 6954424402824 |
| Size | 21700 |
| Voltage | 3.6/3.7 |
| 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 |
| Size | 21700 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 5000 |
| Terminal Type | Button Top |
| Protected | true |
| Integrated Charge Port | No |
| Max. Discharge Rate | 15 |
| Length | 2.98 in (76 mm) |
| Diameter | 0.85 in (22 mm) |
| Weight | 2.54 oz (72 g) |
| Certifications/Standards | ANSI, CE, RoHS |
| Country Of Origin | China |
| HTS Code | 85076000 |
| Length | 3.33 in |
| Width | 2.2 in |
| Height | 1.03 in |
| Shipping Weight | 0.21 lb |
| Packaging | Boxed |
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
Overall rating: 4.2 / 5 from 15 reviews.
Review topics: ["charger","performance","price","problem","batteries","run"].
"I cannot put a dent in the battery life of these beauties. Very well made. I use these in my Fenix Headlamp, and Fenix Lantern. After a weekend camping or a whole week of hunting/camping, I get back home and literally spent between 10-15% to 50% of 'juice'. That's with quite a bit of use in the field. Highly Recommend !!"
"Great Product."
"Bought an extra 21700 for my Klarus A3. No issues. A lot of capacity!"
"Disappointed in this battery for my Klarus, this is the second one, lasted less than a year."
"High quality battery for my flashlight. Fits perfect."
"Expect this spare should last as long as the original."
"I have ordered this battery several times from this website and never had a n issue this is the first time that the battery performance is not good at all in the past the battery lasted 3 days with this one I am lucky to get a day and a half. And charging time has doubled. I am disappointed but I am going to try to order another one and see if I have the same issues maybe it was just one bad battery."
"bat works good"
"Works great in my light. Yes its a little long, but matched with proper charger its a high output powerhouse."
"I run these batteries in my Jetbeam lights. They seem to shine brighter and longer than the original 5000mAh batteries."
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