I'm new to this site, so apologies if this subject has come up before. With the mercury batteries that used to power the OM1n meter, no longer available. Are there any Olympus users out there who've tried the alternatives.......i.e. MR9 voltage reducer in combination with silver oxide 1.5's, Wein Cell etc., if so, are they satisfactory?.......giving accurate readings?....reasonable battery life? I'm not yet an Olympus user, but am thinking of changing, in order to reduce the weight I'm currently carting around with my current system.