Varta Microbattery Inc, White Plains, NY, offers the power one® line of hearing aid batteries. power one features Long Tabs to remove and insert batteries comfortably. These batteries are optimized for all types of hearing aids and eliminate the need to stock two separate battery lines. power one delivers long life for Super-High-Power Hearing Aids, and meets all requirements of the industrys high power standard. (800) 431-2504; www.powerone-batteries.com.