The XTAR ANT-MC1 Plus Charger is a portable USB mini charger with a 1A maximum constant current and a tiny blue LED battery indicator. Compared to the original MC1 charger, you can charge an 18650 as well as other lithium-ion batteries at twice the amperage. The ANT features the ability to automatically detect the battery being charged and choose the most suitable charge current at either 0.5A or 1A. The ANT makes a great upgrade to the MC1 Plus charger and is a direct replacement.