Power
"Really impressed with Fenix batterires. Purchased an extra one to run in their high power lights,I do not want to worry about running out of light. Great quality Fenix!"
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More Information
Specifications of the ARB-L21-5000U Rechargeable Battery
- 5000mAh high capacity
- USB Type-C rechargeable battery (charging cord NOT included)
- Protection circuitry to prevent short circuits
- Pressure vents to prevent explosions
- 500 charge cycles
- Indicator light on battery is red while charging, blue when charged
- Compatible with all lights using a 21700 size battery.
Capacity: 5000mAh
Voltage: 3.6V
Charging Current: Recommended 1A, maximum 5A
Weight: 2.6 ounces (72.5g)
Size: Length: 2.99″ (76mm) Diameter: 0.85″ (21.5mm)
Warranty Period: 12 month from date of purchase
*Battery does NOT include charging cord.
Overall rating: 4.806338 / 5 from 284 reviews.
AI Generated Review Summary
The Fenix ARB-L21-5000U Rechargeable Battery offers high capacity, long life, and good quality at a reasonable price. Customers appreciate its USB-C charging port and built-in protection features, though it is not compatible with 18650 flashlights or older chargers.
Summary topics
- Customer Service (4%): Customers appreciated the excellent service provided by the company, which was mentioned multiple times in the reviews.
- Battery Life (4%): Customers keep praising the Fenix batteries for their long life and long charge time between charges.
- Product Quality (5%): It was observed by customers that the product has good quality and comes at a very good price.
Review topics: ["quality","shipping","service","works","light","battery","charger","issues","power","design","customer service","price","replacement","cord","flashlight","life","fenix","lasts","runs","feature","use","usb","chance","recharge","holds","headlamp","friend"].
Review highlights
- "Excellent service very fast process and the product is of excellent quality." —
- "Good quality battery at a very good price." —
- "Charges quick and nice long life." —
Reviews
I purchased it for a
"I purchased it for a spare. Sending it through USPS wasn’t great. It sat for 9 days in a facility. The facility was the next county from me. Approximately 15-20 miles. From when it left the manufacture to me. Was approximately 2 1/2 weeks. But that is what the USPS service is all about now. Slow and sloppy deliveries. A new postmaster is needed in the state and in the head of USPS. A week or so after purchasing this battery. I preferred a headlamp and battery. It came days after the signal battery for my flash light."
Hi I like them but
"Hi I like them but only one of the flashlight. Came with 6000mah battery I use it but when the battery went low in power I try to charge it and didn’t charge anymore"
5000 mAh
"These batteries are great! But I want to know if the 6000 will fit in the 5000 space (E 35)"
Only flashlight
"Thought i could also charge my phone with this battery…nope"
Fenix ARB-L21-5000U Rechargeable
"Great backup battery. Love the fact I don't need a charger and hooks up directly with a wire"
i buy battery because i
"i buy battery because i have a flash light TK20R and i replace battery and still no work what i can do"
Long lasting light
"Was my trusted light when cycling in a far away country. Lasted from before dawn to mid day."
5000u battery
"Great battery, has charging capability built in."
My second set of these
"My second set of these 5000mAh batteries, now upgraded for direct charging. the first set worked for more than 5 years before the charge started to dwindle. A great value with no headaches."