The BAT-HA312 part of Rayovac is a remote control hearing aid battery charger. It features "smart charging technology" with six charging bays and three output levels for easy programming. It automatically senses when hearing aid batteries need to be recharged and can provide up to 24 hours of usage from a single charge. It also includes a display panel which shows charging status and charge time remaining. The BAT-HA312 is designed for mainstream hearing aid wearers who want the convenience and reliability of a hearing aid battery charger.