Unlike the product image my VP4 only one power supply and no car adapter was, I had such a result of reports from other users but not expected. Regardless of the device can be in the vehicle to use if you already have an adapter from any other charger. Since the charging current of the VP4 is adjustable, can be equipped with this battery charger can also thin cells as well need to e-cigarettes partially, upload them without problem with only 250 mA. A knob allows to select the desired charging current. Four inlaid cells the maximum charging current 0.5 A with only two cells even 1 is A. The charging voltage is 4.2 volts smooth, overloading I could not watch. In a thermographic analysis of charging (see video) showed that also the temperature level with a maximum of 40.4 ° C and 37.2 ° C device temperature cell temperature is to conserve battery charge. Here makes the external power supply paid, which holds a substantial portion of the heat from the compact appliance.
A total of VP4 is a fully recommended charger for Li-Ion cells. However, Ni-MH or Ni-Cd battery is not charging the VP4. Since the VP2, the smaller version of the VP4 with only two charging slots, is not cheaper than the VP4, the VP4 would be my first choice to load only two cells. For a complete comparison of VP4 by i2 and the All-80 I loaded due to the length restriction for review videos on YouTube.