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Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries

$24.95
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Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries
Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries

Klarus K2A 3-in-1 2-Bay Smart Charger, Power Bank and Battery Holder for Protected 18650, 20700, and 21700 Batteries

Brand:Klarus
MPN:K2A
  • Compatible with lithium-ion battery chemistries including IMR, INR, and ICR
  • Spring-loaded prongs adjust to protected 18650, 20700, and 21700 batteries
  • Real-time interactive display indicates charge level and rate in high resolution
  • Compact and lightweight two-way charger is a perfect addition to your EDC gear
  • Charger Channels: 2
  • Compatible Battery Sizes: 18650, 20700, 21700
  • Supported Chemistries: ICR, IMR, INR, Li-Ion
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Description

Klarus K2A

3-in-1 Battery Holder, Rapid Charger, & Power Bank

The Klarus K2A is a sleek charging solution for your protected button top 18650, 20700, and 21700 batteries that gives you a storage space as well as full access to their potential via power bank functionality. If you want to have a pair of specialized batteries on hand to power modern flashlights and devices, why not keep them charged and usable in the meantime?

Charge/Discharge Capability

Dual USB terminals and dual battery bays enable charging or discharging of two high-tech batteries. Simply insert your battery into the adjustable prong system secure beneath a magnetic cover. With batteries, access 18W recharge input via the USB-C port or use it as a rapid charge power bank for your other devices through the USB-A and USB-C connections. Enjoy the peace of mind of PD/QC3.0 certified construction that keeps electronics safe during lightning-fast recharge sessions supplying either the K2A or the rest of your device library. The K2A has the added benefit of reviving batteries that have been over-discharged down to 0 Volts, where most chargers cannot read the low power level. This allows you to repair dead batteries, restoring full function and vitality to the cells in the process.

Please Note: This battery charger is compatible with button top 18650 batteries, not flat top 18650s. However, it is capable of charging button top or flat top 20700s and 21700s.
  • Notable Features
  • » 6-layer circuit protectors from reverse polarity, over-current, over-voltage, over-charging and over-discharging
  • » Compatible charging button top 18650, 20700, and 21700 batteries
  • » Revival functionality brings over-discharged batteries at 0V back to live
  • » Dual discharge capability letting you charge two devices at once using the PowerBank function
collection: Battery Chargers
Item Details
Brand Klarus
SKU KLARUS-K2A
Manufacturer Part Number K2A
UPC 6954424404026
Charger Channels 2
Compatible Battery Sizes 18650, 20700, 21700
Supported Chemistries ICR, IMR, INR, Li-Ion
Specifications
Charger Channels 2
Compatible Battery Sizes 18650, 20700, 21700
Unit Dimensions
Length 5.2 in (132 mm)
Width 2.28 in (58 mm)
Height 1.1 in (28 mm)
Weight 2.87 oz (81 g)
Certifications & Transport
Certifications/Standards ANSI, CE, FCC, RoHS
Country Of Origin China
HTS Code 85044030
Packaging/Shipping Dimensions
Length 5.96 in
Width 4.33 in
Height 1.4 in
Shipping Weight 0.38 lb
Documents
User Manual
Additional Details
Packaging Boxed
Warranty Battery Junction Warranty
Return Policy Return Policy

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Reviews

Overall rating: 3.5 / 5 from 2 reviews.

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Reviews

Works, but could be better

"As is often the case with Chinese technical products, the documentation is brief, often ambiguous, and less than comprehensive. The unit will not accept 18650 cells that are actually 18 x 65, presumably to require cells that have integrated protection circuits. This excludes cells that are of the correct dimensions that do in fact include such circuity. Exporting the safety-critical battery management to the battery is, IMO, a poor design decision. The electrical contacts in the battery chamber are less than optimal; for instance, during a charge cycle, simply picking up the unit may cause the charge current to drop from 500 mA to 10 mA for no obvious reason. The firmware's idea of what the state of charge is can be an apparently random variable. That said, it often did an adequate job of charging various devices. Charging devices through the USB C port may or may not work, depending upon whether it does or not -- iPhone yes, flashlight no."

— Michael R. (3/5)

Awesome charger/powerbank

"Love it, the only reason why it's not fully 5 star is that 18650 batteries that are not protected are too short to use in this. Other than that it's GREAT."

— Edward N. (4/5)

Q&A

Do you have one like this but for a SINGLE 18650?
No, I don't believe so.
Is there a way to defeat the dreaded auto-power shutdown mode when using to charge low current device?
We are not aware of any way of over-riding the chargers ability to sense a device with such a low current that it cannot register on the charger.