ZPower is a manufacturer of new silver-zinc miniature hearing aid batteries that has partnered with several of our hearing aid Manufacturer’s to offer a new rechargeable option. The batteries should last approximately a year. The batteries should run a 12-14 hour day on a full charge. However, if the hearing aid user is utilizing Bluetooth streaming, then the hours per day would shorten if much streaming is involved. Ask about the rechargeable option when you come in for your next hearing aid check up.