Watch Battery Renata 303 Renata Watch Battery 303MP is a silver oxide low drain battery 1.55 V. Watch Battery 303MP measures 11.6 x 5.4 mm. This battery is mercury free and has a capacity of 175 mAh. Renata Switzerland is a leading manufacturer of premium button cells for watches and many electronic products.

Interchange: Energizer 303, Maxell SR44SW, Varta V303, Rayovac 303, Duracell D303/357, Timex A, Citizen 280-08, Seiko SB-A9, I.E.C SR1154 (SR44).