Klarus K2 Smart Charger

(8 customer reviews)



  • Microcomputer control system allows each of the two battery slots to charge individually
  • Capable of charging 2 batteries simultaneously (Ni-MH / Ni-Cd / LiFePO4 / 3.7V Li-ion / 3.85V Li-ion)
  • Li-ion:26650 22650 18650 18490 17670 17500 16340 14500 10440 16340(RCR123A)
  • LEDs display to clearly show charging progress
  • Optional 0.5A or 1A output charging current
  • Charger cable DC 5V micro USB port connects directly to either a car charger plug, a computer
  • USB port or other USB charger plug for charging at home or while travelling
  • Use as a power bank capable of charging USB equipment, with an Li-ion battery as the power source
  • DV/dt Control technology to charge Ni-MH and Ni-Cd batteries more fully
  • Built-in reverse polarity and short-circuit protection
  • Features over-charge protection to prevent battery damage. Automatically stops charging when complete
  • Auto-activation function:
  • a). Automatically reactivates “zero voltage” short-circuit protected Li-ion batteries that have been completely drained of power
  • b).Will not charge a battery that cannot be reactivated.
  • Made of durable ABS (fire retardant/flame resistant) for your safety
  • Optimal heat dissipation design for long lifespan


In stock

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Klarus Mi2 USB Keychain Light-0
SKU: K2 Categories: , , ,



  • Input Power: Micro USB DC 5V/2A
  • Output Voltage : 4.35V/4.2V/3.65V/1.48V ±1%
  • Output Current : 0.5A/1A
  • USB port output: 5V/1A
  • Size : 115mm×63.5mm×29mm (Length/Width/ Height)
  • Compatible with:LiFePO4, 3.7V/3.85V Li-ion, Ni-MH, Ni-Cd
  • Li-ion:26650 22650 18650 18490 17670 17500 16340 14500 10440 16340(RCR123A)
  • Ni-MH, Ni-Cd:AA AAA AAAA C
  • Weight: 75g
  • Optimal working environment:5%(0°C)-90%(35°C) (fully-laden regular activity)
  • Storage temperature: 0°C-40°C



Additional information

Weight 0.075 kg

8 reviews for Klarus K2 Smart Charger

  1. Stace (verified owner)

    Fantastic charger, it chargers just about any battery I put in it,should have purchased one long ago.

  2. Mark

    Easy to follow charging progress .

    I like rhe way the indicators light up to show how much charge is in EACH battery.

  3. sockeye

    Quality versatile charger

    Great little charger for all my rechargeable batteries.

  4. Lyle (verified owner)

    Effective little charger

    The Klaris K2 charger got me out of a tricky problem. I had a 18650 battery that had become completely discharged, and my old charger would not recognise the battery. The K2 reactivated the battery and charged it up as good as new. It will accept a variety of battery types and sizes. For such a keen price this is a great little charger.

  5. David

    Also good

    Charger, no explanation needed

  6. Manny

    Satisfied customer

    Excellent communication leading up to purchase followed by quick and accurate delivery.

  7. Fance (verified owner)

    Worth the money

    Value for money.
    Light weight.
    Usb input and output.
    Charge almost all types of battery.
    Charge fairly quick.
    Accurate charging indicator.

  8. Warwick

    Good charger, poor powerbank

    Great for detecting correct battery and charging fully. Used as powerbank it gets hot, emits a high pitch noise from the electronics and only gets one phone charge with 2 x 18650 3400mAH batteries. Not an efficient powerbank but great charger.

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