Fast charger for cylindrical Li-ion 18650 batteries Xtar SC2 USB-C

Key Features

• 2 independent charging channels
• microprocessor controlled three-stage charging process TC/CC/CV
• high charging current - 2x 2A / 1x 3A
• powered by any USB charger (recommended with QC 3.0)
• compact size - easy to carry
• deeply discharged cell reactivation function
• protections: short circuit, thermal, reverse polarity

Xtar is a renowned manufacturer of high-quality chargers for Li-ion batteries, flashlights, and Li-ion batteries. Xtar products are sold in over 120 countries, including the USA, Germany, Japan, and Russia. For the production of Xtar chargers, only the highest quality materials are used - from the casing material to efficient electronics. All Xtar chargers have CE certification required in European markets.

Hidden in a compact casing is a fully professional microprocessor charger with a three-stage charging process TC/CC/CV. It charges Li-ion cells 3.6 / 3.7V of any capacity in sizes 18650, 18700, 20700, 21700 - also protected, 22650, 25500, 26650.

What is the TC/CC/CV charging method? It is a three-stage charging process for Li-ion cells that ensures the cell is kept 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 2.9V, the cell is charged with a constant current of 2x2A / 1x3A.
• 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. After reaching 4.2V, 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, it must be placed in the charger before plugging it into the power supply. Charged batteries left in the charger will undergo a natural self-discharge process. Charging will resume when the voltage on the battery drops below 4.1V.

Ładowarka Xtar SC2 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 SC2 charger comes to the rescue, which in many cases allows for the 'rescue' of such cells. Just place the deeply discharged battery in the SC2 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 can be irreversibly damaged, and their reactivation may be impossible. It is important to 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.

Ładowarki 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 SC2 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 SC2 will rise by no more than 15 degrees.

Included with the Xtar SC2 charger is a USB-C cable. The power adapter is not included in the set. Any charger with a USB-C cable, e.g., from a phone, or a USB socket or a computer with a free USB port is sufficient to power the charger. The recommended minimum power of the charger is 2A).