Conveniently charges two batteries at once!

Two batteries are better than one, but only if they are charged and ready for action. The ProMaster Dually Charger for the OM System BLX-1 can charge two batteries simultaneously. It is very compact, and it offers the convenience of a built-in USB-A input cable that neatly stores in the base of the charger. 

Since it draws power from USB-A sources, you can use the Dually Charger with a USB AC Adapter (not included), laptop, power bank, car charger, and more (2.2A minimum current required).