Klarus K2 Smart Charger: Two-Cell

The Klarus K2 Smart Charger is capable of charging almost all rechargeable batteries, and can fit and charge up to two at a time. This charger also can be used to charge cellphones like a power bank. The K2 Battery Charger is perfect to take with you wherever you go so you can keep your batteries or cellphone charged up whenever you need them. 

Features:
• Microcomputer control system allows each of the two battery slots to charge individually
• Capable of charging 2 batteries simultaneously
• LEDs display to clearly show charging progress, no plug-in required (only applicable to Li-ion batteries)
• Optional 0.5A or 1A output charging current, you choose the appropriate output
• 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

Specifications:
• 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
• Dimensions (L x W x H): 115mm × 63.5mm × 29mm 
• 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