Klarus K2 2-bay USB Smart Charger with LED Indicator for Li-ion, NiMh and NiCd Batteries

Klarus K2 Smart Charger

Two-Way Power: Charge Batteries or Devices

The Klarus K2 is redefining the notion of what a battery charger can be. In addition to charging your batteries, it can also re-purpose them to serve as a heavy-duty power bank for your USB devices. Simply switch your cord from the input jack to the output, hook it up to your smartphone or tablet via USB-C technology, and fire up that dead device! Revolutionary input/output circuitry gives you the flexibility to store and discharge power any way you want.

From AA to 18650 - Wide Compatibility

The K2 has a lightweight, portable body that allows you to throw it in any bag. This helps you take advantage of its battery backup capability. This smart charger is compatible with 3.6/3.7V lithium-ion and 1.2V Ni-MH or Ni-Cd batteries, for a wide compatibility of different chemistries. From 18650 and 21700 batteries to simple rechargeable AA AAA, and C batteries, charge what you have on hand! Intelligent circuitry auto-detects your battery's chemistry and adjusts factors like charging voltage and cutoff. Furthermore, the K2 will reactivate lithium batteries with 0V, just as long as they are undamaged and have an internal protection circuit board.

Crank Up the Amps

Double your charging speed! The K2's beefy 1 amp output is ideal for charging high-capacity Li-ion batteries. Simply push and hold the button to crank up from 0.5 amps to a full 1 amp charge rate. It’s a handy option to have when you're in a hurry.