The VC2 is a professional processor charger with a three-stage TC / CC / CV charging process and an LCD display. Charges 1-2 3.6 / 3.7V Li-ion cells of any capacity in the sizes 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650.

The backlit LCD display of the Xtar VC2 charger shows up-to-date information on the charger's operating status: battery voltage, charging current, charge used to charge the cells, indicates possible errors, and informs you when charging is complete. Information about the load used can be used to measure the capacity of batteries. To measure the battery capacity, discharge it to its proper voltage cut-off level (usually 2.5V) and insert it into the VC2 charger. When charging is complete, the display shows the charge used to charge the battery. It will always be 3-5% higher than the actual battery capacity. It results from the fact that the process of charging batteries is never 100% efficient, i.e. a slightly larger charge is needed to charge the battery than it results from the actual capacity of the cell.

What is the TC / CC / CV charging method? It is a three-stage process of charging Li-ion cells that ensures that the cell is in good condition by charging with the right current at each stage and ending the charging process at the right time.
The individual stages of the TC / CC / CV process are:
• TC phase: cells discharged below 2.9V are "woken up" by a lower current.
• CC phase: after reaching 2.9V, the cell is charged with a constant current of 0.05A to 0.5A (depending on the power source used).
• CV phase: when the cell is almost charged, the charger switches to charging with decreasing current until it reaches 4.2V on the cell. After reaching 4.2V, the charging process is completed - the battery is fully charged.

Charged batteries left in the charger will undergo a natural self-discharge process. Charging will resume when the battery voltage drops below 3.9V.

The Xtar VC2 charger has the function of reactivating deeply discharged cells and 0V cells. Many chargers on the market are not able to charge such batteries. Here, the Xtar VC2 charger comes in handy , which in many cases allows you to 'save' such cells. Just insert a deeply discharged battery into the VC2 charger, as with normal charging - the charger will detect a discharged cell and attempt to reactivate it.

Warning! Cells discharged below a certain level are irreversibly damaged and may not be reactivated. Avoid too deep discharge of Li-ion batteries - this can lead to a significant reduction in their durability and capacity or lead to their total malfunction.

Chargers from other manufacturers can significantly increase the temperature of the cells being charged during charging. Excessive heating of the cells can cause their faster wear. When designing the VC2 charger, Xtar went a step further from the competition, solving this problem in a simple way: power supply from an external power supply was used. As a result, the temperature of the battery charged in VC2 will rise by a maximum of 15 degrees.

Complete with the Xtar VC2 charger, we get a micro USB cable and a protective cover for the charger during transport. The set does not include a power supply . To charge the charger, any charger with a micro USB cable is sufficient, e.g. from a telephone, or a USB socket or a computer with a free USB port. Recommended charger power is 2A (2000mA)