

Product Details
Acebeam 21700 Li-ion USB-C Rechargeable Battery-5100mAh
PRODUCT DESCRIPTION
ACEBEAM IMR21700NP-510A is a new generation high performance cell with a maximum capacity of 5100mAh and a USB-C charging port to remove the need for an external charger. This powerful battery has improved performance, and superior energy density compared to previous 18650 batteries. An ideal companion for the L18 or L19 tactical flashlight from ACEBEAM, an extra 21700 is a great back-up battery to have on hand, as more electronic products and ACEBEAM flashlights will utilize this battery.
Specifications:
Battery Size: 21700
Chemistry: IMR Lithium-Ion
Power [W-h]: 18.9Wh
Voltage: 3.7V
Capacity: 5100mAh
Discharge End Voltage: 2.5V
Standard Charge Current: 1A
Max Continuous Discharging Current: 15A
Cycle Rating: 500 Cycles
Charging Cable: USB to USB-C Charging Cable (included)
Charge State Indicator: Charging-Red LED; Full charged-Green LED
Protection Circuit: Integrated safety circuit protects the battery and device
Overheat Protection: Operating at the max output the battery will not overheat, this is part of the protection circuit.
Other Safety Protections: Protects against Overload, Leakage, Short Circuit, Over Voltage, & High Temperature
Certifications: IEC 62133, CE, FCC, PSE, UN38.3, RoHS, REACH
Operating Temperature Range: 0℃ -> 45℃ (Charging); -20℃ -> 55℃ (Discharging)
Self-Discharge: The dormant / self-discharge characteristics of Acebeam batteries are very low. This is one of the advantages of a lithium-ion battery with a control circuit. The battery life in dormant mode depends partly on the environment. High ambient temperatures, and higher humidity, increases the internal drain. But in normal circumstances, a battery installed in a device, like a door lock, will last ~12 months.
Cells Per Battery: 1
Dimensions: Length-3.02" (76.8 mm), Diameter-0.827" (21.3 mm)
Weight: 72.5g
To prevent any mistake, please note that this battery is not a 18650 battery. Please only use 21700 batteries when indicated, not all 18650 battery powered lights will accept a 21700 battery.
We are unable to accept returned batteries once they have been opened, so please ensure they are the correct cell for your device before ordering.
Delivery Information
🚚 Order Processing & Shipping Timeframes
We take pride in getting your order out quickly and efficiently.
* Orders are shipped within 24 to 48 business hours after payment confirmation.
* Our fulfillment center is located in the Province of Quebec, Canada.
📦 Standard Shipping:
Estimated delivery within 1–7 business days, depending on your location in Canada.
⚡️ Express Shipping:
Estimated delivery in 2–3 business days.
You’ll be able to choose the best shipping option for your needs at checkout, where real-time rates and estimated delivery times are shown based on your delivery address.
Customer Service
Happy to chat! Feel free to contact us using our form or chat service. Our hours of operations are from 10:00 am to 3:00 pm Eastern Time, Monday to Friday, not including Holidays.
What People Are Saying
Mitchel K.Fenix HMR65R-T V2.0 Review
Super stoked on the new V2.0 version of this headlamp. The new ratchet system is a great improvement. The update headband is fantastic. And the purple colour scheme is super cool. I’ve owned multiple Fenix lights over the past few years and I won’t consider any other brand for future purchase. Happy customer.
Martin H.Love my Nitecore Tini 3!
V-Awesome ‘lil keychain flashlight !!
Intuitive.
Very functional.
More than just a trinket ‘keychain flashlight’.
Nitecore quality.
—‘FLASHLIGHT WORLD’ is reputable, service oriented & is a decent vendor.. ..Kudos!!
Rob M.Pocket size protection
There are five reasons why I purchased this Klarus XT1C flashlight. It can be programmed for one button instant strobe. One,Defense from bears or people. Two, Offence, red light keeps you hidden at night. Three, USB-c battery usually an upgrade. Four, small pocket sized and five, Klarus is a good brand name.
Claudio C.Acebeam P20
Amazing quality. A powerful robust flashlight that suits my needs in the field of hunting and outdoor survival. Flashlight world were friendly and answered all my questions promptly. Great service.
Derek R.Another first time customer
Fenix ARB-L21-5000U Li-ion Rechargeable 21700 Battery with USB-C Charging Port.
I bought two of these batteries to add to the one that came with my flashlight.
Very happy with the original so I expect these will be the same.
Good customer service and quick delivery. Happy customer. Thanks.