The EPX76 referred to as a battery type is the same as an SR44. Try to avoid the alkaline versions (LR44). Other posters here have recommended this site for the SR44 batteries:
You should use (2) MS76, KS76, SR44W, G-13, 303, 357. These are silver oxide cells. Do not use alkaline (A76, LR44) or lithium double cell (CR1/3N) as they came out after the camera was designed and 1) cause a 2-3 stop error in the meter needle position and 2) can cause the dread "clack" of shutter lock.
John http://www.zuiko.com
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