Li-ion 18650 cylindrical battery charger Xtar MC6 II

Hidden in a small casing is a fully professional processor-controlled charger with a three-stage charging process TC/CC/CV. It charges 1-6 Li-ion cells 3.6 / 3.7V of any capacity in sizes 14500, 14650, 16340, 17500, 17670, 18350, 18500, 18650, 18700. It is also possible to charge two batteries of size 20700, 21700, 22650, 25500, or 26650.

What is the TC/CC/CV charging method? It is a three-stage charging process for Li-ion cells that ensures the cell remains in good condition by charging with the appropriate current at each stage and completing the charging process at the right moment.
The individual stages of the TC/CC/CV process are:
• TC Phase: cells discharged below 2.9V are 'woken up' with a lower current.
• CC Phase: after reaching 2.95V, the cell is charged with a constant current of 1A, 0.5A, or 0.25A (depending on the power source used).
• CV Phase: when the cell is almost fully charged, the charger switches to charging with a decreasing current until the voltage of 4.2V is reached on the cell. Once 4.2V is reached, the charging process is complete - the battery is fully charged.

Batteries with a voltage of 4.06V or higher are treated by the charger as charged. To top up such a battery to full, it must be placed in the charger before plugging it into the power supply. Batteries left in the charger will undergo a natural self-discharge process. Charging will resume when the voltage on the battery drops below 4.06V.

The Xtar MC6 II charger has a reactivation function for deeply discharged cells and cells with a voltage of 0V. Many chargers on the market are unable to charge such batteries. Here, the Xtar MC6 II charger comes to the rescue, which in many cases allows for the 'rescue' of such cells. Simply insert the deeply discharged battery into the MC6 II charger, just like with normal charging - the charger will detect the discharged cell and attempt to reactivate it.

Note! Cells discharged below a certain level may suffer irreversible damage, and their reactivation may be impossible. Avoid excessively deep discharging of Li-ion batteries - this can lead to a significant reduction in their lifespan and capacity or render them completely inoperable.

Chargers from other manufacturers can significantly raise the temperature of the charged cells during charging. Excessive heating of the cells can cause them to wear out faster. In designing the MC6 II charger, Xtar has gone a step further than the competition by solving this problem simply: it uses power from an external power supply. As a result, the temperature of the battery being charged in the MC6 II will rise by no more than 15 degrees.