PX625 Battery Converters
thingiverse
This Adapter replaces the discontinued PX625 mercury batteries(1.35V) used in old cameras or light meters. I have included two versions of the adapter, one for SR44 (silver oxide with 1.55 V) or P675 (blue hearing aid batteries with 1.4V) and a second adapter for P13 (orange hearing aid batteries with 1.4V) The Adapter can be used in several old cameras like Pentax Spotmatic F, Practica LTL, Leica M5, Olympus OM-1 etc... Both Adapters: Height: 5mm Big outer diameter =15.5mm Small outer diameter = 13mm P13ToPX625 Adapter: Inner diameter = 7.9mm SR44ToPx625 Adapter: Inner diameter = 11.6mm WARNING: These are passive adapters without a diode to reduce the current. They can be used with 1.4V hearing aid batteries without any risk. If you are using SR44 silveroxide batteries with 1.55V make sure your camera or light meter can handle the higher voltage! (If it is equipped with a bridge circuit or was modified in another way)
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