Charger for cylindrical batteries Li-ion 18650 Xtar MC2 with USB power adapter

Hidden in a small case is a fully professional processor charger with a three-stage TC/CC/CV charging process. It charges 1-2 3.6/3.7V Li-ion cells of any capacity in sizes 14500, 14650, 16340, 17500,17670, 18350, 18500, 18650, 18700, 22650, 25500, 26650.

What is the TC/CC/CV charging method? It is a three-stage process of charging Li-ion cells to ensure that the cell is kept in good condition by charging with the right current at each stage and completing the charging process at the right time.
The individual steps of the TC/CC/CV process are:
•TC phase: Cells discharged below 2.85V are 'woken up' with a lower current.
•CC phase: When 2.85V is reached, the cell is charged at a constant current of 0.5A or 0.25A (depending on the power source used).
•CV phase: when the cell is almost charged, the charger switches to decreasing current charging until the voltage of 4.2V is reached on the cell. When 4.2V is reached, the charging process is complete - the battery is fully charged.

Batteries with a voltage of 4.1V or higher are treated by the charger as charged. To fully charge such a battery, insert it into the charger before plugging it in. Charged batteries left in the charger will undergo a natural process of self-discharge. Charging will resume when the voltage on the battery drops below 4.1V.

The Xtar MC2 charger has the function of reactivating deeply discharged cells and cells with a voltage of 0V. Many chargers on the market are not able to charge such batteries. This is where the Xtar MC2 charger comes to the rescue, which in many cases allows you to 'save' such cells. Simply insert the deeply discharged battery into the MC2 charger as you would with normal charging - the charger will detect the discharged cell and attempt to reactivate it. Remark! Cells discharged below a certain level are irreparably damaged and may not be able to reactivate them. Avoid discharging Li-ion batteries too deeply – this can lead to a significant reduction in their lifespan and capacity, or lead to their complete inoperability.

Chargers from other manufacturers can significantly increase the temperature of the charged cells during charging. Too much heating of the cells can cause them to wear out faster. With the MC2 charger, Xtar went a step further than the competition by solving this problem in a simple way: it used power from an external power supply. Thanks to this, the temperature of the battery charged in the MC2 will increase by a maximum of 15 degrees.

The Xtar MC2 charger comes with a micro USB cable and a cover to protect the charger for transport, as well as a 5V 1A USB power supply. To power the charger, any charger with a micro USB cable, e.g. from a phone, or a USB socket, or a computer with a free port, is enough