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ARB-L21-5000U is a high capacity 21700 Li-ion USB rechargeable battery built for more power and longer runtimes. This battery has its own USB-C charging port for quick/easy charging without the need for a separate charger. Additional features include a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. Pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion. Battery capacity up to 5000mAh. 500 charging cycles. This product will only work in those models supporting 21700 batteries. A USB-C charging cord is NOT included. Important Note:
THIS BATTERY IS NOT COMPATIBLE WITH 18650 FLASHLIGHTS OR OLDER STYLE CHARGERS. COMPATIBLE CHARGERS ARE THE FENIX ARE-A2, ARE-A4, ARE-D1, ARE-D2, OR ARE-X1 V2.0.
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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: 4.8076925 / 5 from 286 reviews.
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.
Review topics: ["quality","shipping","service","works","light","battery","charger","issues","power","design","customer service","price","cord","replacement","flashlight","life","fenix","runs","lasts","feature","use","usb","headlamp","recharge","holds","chance","friend"].
"The new battery for my Fenix flashlight works great. The dissapointment was the battery that was originally in my flashlight was faulty, which is what prompted me to have to buy a new battery. My flashlight is only 9 months old too. I was hoping that would be under warranty."
— David A. (5/5)
"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!"
— mike h. (5/5)
"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."
— Jack F. (5/5)
"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"
— elmer l. (5/5)
"Use as a spare, works well."
— Timothy S. (5/5)
"These batteries are great! But I want to know if the 6000 will fit in the 5000 space (E 35)"
— Art C. (5/5)
"Thought i could also charge my phone with this battery…nope"
— Kenneth A. (1/5)
"Great backup battery. Love the fact I don't need a charger and hooks up directly with a wire"
— Robert F. (5/5)
"i buy battery because i have a flash light TK20R and i replace battery and still no work what i can do"
— ALFONSO L. (5/5)
"Was my trusted light when cycling in a far away country. Lasted from before dawn to mid day."
— Cheran V. (5/5)
Your ExpertVoice deal.
$[Deal Price]
$[Original Price]
Discount applied at checkout.
On sale now — lower than your ExpertVoice discount.
Not eligible for ExpertVoice discount.
You’ll see your ExpertVoice discount at checkout.
