Klarus K1 Smart Charger for Li-Ion/Ni-Cd/Ni-MH, Black Single Bay Portable Charger - Less than 5 inches long and weighs a little over 2 ounces Features an LED display that lets the user moniter the charging process and pick between 0.5 Amp and 1.0 Amp charging current Features an auto-activation function - Able to reactivate over-discharged short-circuit protected Li-ion batteries The K1 has DV/dt control technology that is able to charge Ni-MH and Ni-Cd batteries more fully Can charge a wide variety of Li-Ion, Ni-MH, and Ni-Cd batteries