The S23PX is a mercury-free replacement for the once popular Mercuric Oxide PX23 (or V23PX) battery cell that was commonly used in cameras, the Retina S2 Flash and Sennheiser microphones such as the Sennheiser K3U. Mercury cells are now banned because of toxicity and environmental fears.
The silver oxide S23PX replacement for the PX23 produces 6.0 Volts, which is higher than the 5.6V produced by the original mercury PX23 cell. Most devices accommodate the small increase in voltage and function perfectly.
Maxell S23PX Battery Fits & Replaces: 4NR42, EPX23, V23PX, PX23, 4LR42, PX23A, RPX23A, 4SR42, PX23S, RPX23S, Sennheiser Shotgun Microphone K3-U, Exell S23PX, Sennheiser K3-U shot gun microphone, Sennheiser K3-N/ME20, Mallory PX23, AKG CE1 SE5E-10 Microphone, Duracell PX23, SPX23,PX23L, 4NR42, S23PX 6 Volt, Interstate Batteries ADRY4040, Varta V23PX, 4NR43, EPX23, Dantona V23PX, 4SR42, PX23S, RPX23S
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