355 Battery Conversion Ring to Fit 357 Battery 355 Kit includes a 357 Battery RW25 Adapter

Product Description

Use this adapter ring to allow the 357 to replace the 355 which has not been available for some time from Energizer, Duracell, Mallory or Rayovac. The voltage 1.55 x 160 mAh is the same for the 357 as the 355; completely interchangeable. This ring DOES NOT change the voltage but allows the same voltage of the 357 1.55 to be delivered to the watch. The 355 and the 357 are the same 1.55 voltage.
The 357 is a long life silver oxide chemistry with non-declining power output; alkaline batteries of the same 1.5 voltage start at 1.5 and at the half life are at .8 volts, silver oxide start at 1.55 volts and maintain the voltage until expiring. This is why silver oxide batteries are always used in watches, insulin pumps and sniper scopes or mission critical situations. Never use alkaline batteries for any device requiring a steady constant voltage. A watch with declining voltage cannot give the correct time.
Dimensions with the ring on the 357 battery; 15.2mm Diameter x 4.8mm Height.

Fits and Replaces