If you are using Marvels there are several pairs of used and new Marvels on eBay that use replaceable batteries. Search for Phonak Marvel and look for 312 at the end of the model name.
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If you are using Marvels there are several pairs of used and new Marvels on eBay that use replaceable batteries. Search for Phonak Marvel and look for 312 at the end of the model name.