XTAR VC2S Battery Charger

The XTAR VC2S Battery Charger is a 2-slot smart battery charger for rechargeable Li-ion, Ni-MH, and Ni-CD batteries. From a reviewer’s perspective, it feels like a strong “everyday charger” because it gives you more information than a basic wall charger: battery voltage, charging current, charging progress, internal resistance testing, and automatic battery type detection. Therefore, it’s a solid choice for users charging common vape, flashlight, camera, and household rechargeable batteries such as 18650, 21700, 26650, AA, and AAA cells. XTAR’s official VC2S page lists features including a VA LCD screen, Micro-USB input, internal resistance detection, power bank function, automatic battery detection, and 0V battery rescue.

The XTAR VC2S supports a wide range of rechargeable battery sizes, including 10440, 14500, 16340, 18350, 18650, 20700, 21700, 26650, AA, AAA, C, and more. In addition, it works with 3.6V / 3.7V Li-ion batteries and 1.2V Ni-MH / Ni-CD batteries. However, one important detail is that XTAR Direct notes the VC2S cannot charge protected 20700 / 21700 batteries, so customers using larger protected cells should double-check battery length and charger fit before buying. However, battery safety still matters: inspect wraps, avoid damaged batteries, use the correct polarity, and store loose cells in a protective case like our XTAR Battery Case. Consequently, the charger helps manage safe charging, but good battery handling is still essential.

The XTAR VC2S can charge at up to 2A in one slot or 1A x 2 slots when charging two batteries, depending on the battery type, condition, and power source. In other words, it can be much faster than a cheap basic charger when paired with a proper DC 5V / 2.1A USB power source. However, faster is not always better for every cell; therefore, I like that the VC2S automatically adjusts charging behavior instead of forcing one charging speed for everything.

The XTAR VC2S LCD screen is one of its best features because it shows real-time charging information instead of just a red/green light. For example, it can display useful details such as battery voltage, charging current, charged capacity, and internal resistance. As a result, it is easier to spot weak, aging, or mismatched batteries before they cause poor performance in your device. Moreover, the internal resistance test is especially helpful if you rotate multiple 18650 vape batteries or flashlight cells and want to know which ones are still performing well.

Yes. The XTAR VC2S includes a portable power bank function, which allows it to work as an emergency USB power source when compatible charged Li-ion batteries are installed. However, I would treat this as a backup feature rather than the main reason to buy it. In practice, the main value is still safe, clear, reliable battery charging; nevertheless, the power bank mode is useful for outdoor gear, travel, and emergency preparedness.