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.
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.
6.0 V Replacement
for: 4NR42, EPX23, V23PX, PX23, 4LR42, PX23A, RPX23A.
• Type: Silver
• Voltage: 6.0 V.
• Diameter: 15.24 mm.
• Height: 20.5 mm.
Also known as: 4SR42 / PX23S / RPX23S.