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This listing is for TWO (2x) battery adapters. You only need one at a time and the second is for a backup.

PX32 Mercury batteries are no longer being manufactured. This adapter allows you to use three inexpensive (1X CR123 and 2x LR44, SR44, 357, 303 or EPX76), and readily available types of batteries in your application that calls for a PX32.

The combined total of the three batteries is 6.1V versus the 5.6V of the PX32 and in most applications works satisfactorily.

The adapter is designed to have two LR/SR44 batteries stacked in series, with the positive end facing the "+" marker on the adapter. The adapter is designed to securely hold the two batteries without any fumbling.