18650 XTAR MC2 battery charger

Professional, dual-channel, compact processor charger for Li-ion batteries in 18650 size and others Key features: – Processor-controlled three-stage charging process TC/CC/CV – Two independent charging channels – Powered by any micro USB charger or computer USB port (min. 0.5A) – Compact size – easy to carry – Reactivation function for deeply discharged cells – Protections: short circuit, thermal, reverse polarity Inside the small housing is a fully professional processor charger with a three-stage TC/CC/CV charging process. It charges 1-2 Li-ion cells 3.6 / 3.7V of any capacity in sizes 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18500, 18650, 18700. It is also possible to charge a single battery size 20700, 21700 – only unprotected. What is the TC/CC/CV charging method? It is a three-stage charging process for Li-ion cells ensuring good cell condition by charging with appropriate current at each stage and ending the charging process at the right moment. The stages of the TC/CC/CV process are: TC phase: cells discharged below 2.85V are ‘awakened’ with lower current. CC phase: after reaching 2.85V, the cell is charged with a constant current of 0.5A or 0.25A (depending on the power source). CV phase: when the cell is almost fully charged, the charger switches to charging with decreasing current until reaching 4.2V on the cell. After reaching 4.2V, charging is complete – the battery is fully charged. Cells with voltage 4.1V or higher are treated by the charger as charged. To fully charge such a battery, insert it into the charger before powering it on. Charged batteries left in the charger will undergo natural self-discharge. Charging will resume when the battery voltage drops below 4.1V. The Xtar MC2 charger has a reactivation function for deeply discharged cells and cells with 0V voltage. Many chargers on the market cannot charge such batteries. Here, the Xtar MC2 charger helps, often allowing ‘rescue’ of such cells. Simply insert the deeply discharged battery into the MC2 charger as for normal charging – the charger detects the discharged cell and attempts reactivation. Warning! Cells discharged below a certain level suffer irreversible damage and reactivation may be impossible. Avoid deep discharge of Li-ion batteries – it may significantly reduce their durability and capacity or cause total failure. Chargers from other manufacturers may significantly raise the temperature of cells during charging. Excessive heating can cause faster wear. Designing the MC2 charger, Xtar went a step beyond competitors by solving this problem simply: it uses power from an external power supply. Thus, the temperature of the battery charged in MC2 rises by no more than 15 degrees. The Xtar MC2 charger comes with a micro USB cable and a protective pouch for transport. The set does not include a power supply. Any charger with a micro USB cable, e.g., from a phone, or a USB port on a computer is sufficient. Recommended charger power is 1A (1000mA).