Battery advice - specifically has anyone used a WeinCell MRB625?

Well I just put a modern higher voltage battery in my cameras e.g Konica TC......if you are worried, then mention your camera and ask if any problems using higher volts.
 
Sure, but i guess then you have to adjust your ISO accordingly. I guess i'm asking for first hand experience as i'm slightly worried about the idea of removing a seal and "letting the battery charge up". :)
 
Cyp...the charging up bit is not a problem. Its not really charging up in the electrical sense; the air reacts with the acid and creates the current ( yada yada yada...).

All hearing aid batteries work that way, hence the holes - to let the air in.This one claims to have lesser holes - so apparently they last longer.

The question about these batteries are : do they actually last as long as they claim? Otherwise its the same as hearing aid ones. So other than llongeviety issue, you should not have any worries
 
I guess i'll have to order one and find out! :)

"In contrast to hearing aid batteries which only last 1 month, the WeinCELL MRB625 batteries last much longer, some times up to a year. To achieve this longer life, the MRB625 used a proprietary electrolyte and has only two small air holes, rather then the 7 larger holes found in standard hearing aid batteries."
 
yeah, I have heard a trick to tape up a few holes of the hearing aid batteries, which is supposed to extend its life. Could be a old wives tale though
 
I use these adapters in my old Olympus, Rolleis and Nikons from this guy

http://www.paulbg.com/Nikon_F_meter_batteries.htm

About £4 each, I bought 4, brilliant quick delivery and very helpful. Batteries are included with the adapter then you can just buy the hearing aid batteries from Boots and re-use the adapter.
 
Cyprio said:
Sure, but i guess then you have to adjust your ISO accordingly. I guess i'm asking for first hand experience as i'm slightly worried about the idea of removing a seal and "letting the battery charge up". :)
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I use 1.55v silver oxide on my Konica TC (was 1.35v), with these old cameras the exposure meter could be slightly out anyway, which was the case with my camera and only needed to adjust the asa by half a stop.
 
I think I read that the silver oxide batteries die gradually, making the readings drift, so attempting to adjust for the incorrect voltage doesn't help. I haven't done the maths but the low price of hearing aid batteries compared with the wein cells might well make that the more economical route (especially for infrequently used cameras)
 
PaulCowan said:
I think I read that the silver oxide batteries die gradually, making the readings drift, so attempting to adjust for the incorrect voltage doesn't help. I haven't done the maths but the low price of hearing aid batteries compared with the wein cells might well make that the more economical route (especially for infrequently used cameras)
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Well with the latitude of neg film and compensation when printing at the lab, it would take a long time to show that you have a problem, but I suppose with slide film you have to be more accurate and hearing aid batteries would be better.
 
I've been using the PaulBG, batteries in the bits and pieces I'm selling, it should make the cameras more sellable being able to have the correct battery voltage in there. Its fiver per camera but I'm reckoning that its worth it for most of them.
 
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