The Xtar MC4S is a compact, four-slot charger designed for everyday battery care. Each bay is independently controlled, so you can charge a mix of chemistries and sizes at the same time. The charger automatically allocates current delivering up to 1A to two bays, or 0.5A across all four to balance speed with cell health. A USB-C input (5V, up to 2.1A) means it works with common phone adapters and power banks.

The MC4S supports most 3.6/3.7V Li-ion formats (from 10440 up to 26650) and 1.2V Ni-MH/Ni-Cd sizes (AAA through C). It can charge two 26650s plus two unprotected 21700 cells simultaneously; protected 21700/20700 cells are not supported. A 0V activation function can help recover over-discharged cells, while seven onboard protections anti-reverse, over-charge, output over-current, short-circuit, over-voltage, over-load and over-temperature add peace of mind.

Simple per-bay LED indicators show charging status at a glance.
For best performance, use a quality 5V/2A (or higher) USB wall adapter. A USB-A to USB-C cable is included.