Promaster Dual USB Wall Charge

Dually chargers are the single most popular ProMaster item introduced in 2019. It is critical to educate customers and salespeople that they require a power adapter capable of providing at least 2.2 Amps worth of power. When used with a charger of lower output the batteries may not charge at all. It is not the Dually that failed, it is instead a lack of power from the wall charger/ adapter.