This is an exacty duplicate of the charger that came with my gloves - which is exactly what I hoped for when I ordered it! The Capstone model of gloves uses two battery packs per glove - and the charger charges two batteries at a time. In order to charge both gloves (or spares) simultaneously, a 2nd charger is needed. This fits the bill. A 4-battery charger would be nice, but the market is probably limited for that - ie only Capstone owners or those who want to charge their gloves AND spares at the same time.
McMurdo Station, Antartica (yes, really)