PowerOne 13 Size 13 Hearing aid Batteries Zinc air Mercury free 12-300 Batteries New Child Resistant PackingExpiry: 2028Powerone size 13 Hearing Aid BatteriesSize 13Zinc AirWireless ApprovedMercury free (Hg 0%)Made in GermanyEasy-to-open packaging. Thicker, larger and more robust cards provide improved handling. Easy to hold, replace and remove Zinc Air MERCURY-FREE PowerOne offer proven zinc air batteries in an alternative, mercury-free version. Power one will thus live up to its claim to be one of the most environmentally friendly hearing aid battery. Sizes 13 and 312 are now wireless approved for modern hearing aids. Power one MERCURY-FREE cells are manufactured in the world’s largest and most up-to-date hearing aid battery plant in Ellwangen, Germany. We provide eco-friendly battery technology, produced under clean room conditions, with an Enhanced Safety & Performance housing coating. Power one MERCURY-FREE cells are manufactured using only high-grade and refined raw materials. Our energy management system is certified in accordance with ISO 50001. Power one MERCURY-FREE means, for you, hearing aid energy with premium performance and durability – of course with the patented stable high level of voltage that Power one provides.