Special Price $29.95 Regular Price $39.95
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Klarus K2A

Klarus K2A Intelligent Dual battery charger and power bank

The Klarus K2A Intelligent Dual Battery Charger and powerban. It serves a dual purpose as a PD/QC3.0 compatible charger and battery holder. It is compatible with protected 21700 batteries and features a digital display that shows the current, voltage, and capacity percentage. The K2A offers protection against everyday battery issues, including overcharging, overvoltage, overcurrent, reverse polarity, over-discharge, and short circuit protection. K2A charger can revive over-discharged batteries with 0-volt resuscitation.


  • 3-in-1 Powerbank, Charger and Battery Holder.
  • Compatible with Protected 21700 Batteries.
  • PD/QC3.0 Compatible Max 18W Charging Current.
  • Limitless Possible Combinations.
  • Digital Display of Data and Status.


  • Input: Type-C QC/PD3.0 Fast Charging, 5V/9V/12V (18W MAX)
  • Compatible Batteries: 3.6V/3.7V Li-ion/IMR/INR/ICR (max.78mm)18650 (non-flathead), 20700, 21700
  • Charging Voltage Cutoff: 4.20+/-0.05V
  • Charging Current (IN): 2Ax1, 2Ax2
  • Output (OUT): OUT1 left channel 18W MAX, OUT2 right channel 18W MAX
  • Discharge Load Limit: 2.8V
  • Operating Temperature: 0-65°C
  • Dimensions: 132mm x 58mm x 28mm
  • Display: High Resolution Digital Display
  • Weight: 81.5 g (w/o battery or charging cable)

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Customer Questions
How many full phone charges for a Galaxy S22+ can the Nitecore NB ultra lightweight power bank do?
A Galaxy S22+ has a 4500mAh battery and the Nitecore NB10000 powerbank has a capacity of 10000mAh.

This means that you should be able to fully charge your phone more than 2 times.

Dividing the capacity of your powerbank by the capacity ...
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