At Power One, every battery is tested before it leaves the works - 100%. The comfort packaging then receives a quality seal, which safely seals and protects it. The rustproof batteries themselves have an outstanding service life, especially where high power demands are concerned. Behind all this is a special, patented technology that enhances cell voltage. Power one is particularly consumer-minded when it comes to handling the battery. Extra long tabs facilitate the removal of the cell from the packaging and insertion into the hearing aid. Power One size 10 Zinc-Air Mercury Free batteries are top of the line, setting the industry standard in hearing aid batteries. Frequently suggested by audiologists as Power One brand batteries stand out amongst more conventional brands in providing longer run times, it is mainly used for Completely-In-Canal (CIC) and In-The-Canal (ITC) hearing aids and identified by Yellow color coding. Power One batteries are Manufactured in Germany, each cell is upheld to the strictest of safety guidelines.