When it comes to replacing an obsolete battery in a vintage device, you pretty much have to take what you can get. Fortunately in this case, what I got was pretty good. The battery measured 16 volts on the analog multimeter (Micronta 22-205) in which I installed it (a function that does not require an internal battery) and it fit in the battery slot just fine, despite being a different shape and size. The original Mallory 504 battery was square and a slight bit longer than this replacement, which is cylindrical and a hair shorter. Despite these differences, it seems to fit snugly. If it slips over time, I can always either tape or wedge it into place. The bottom line is the meter is now fully functional on all its ranges. I only just finished installing this alkaline battery so time will tell regarding its longevity but I do believe the manufacturer's claim of a longer life than the original carbon zinc battery is likely valid.Read full review
Verified purchase: Yes | Condition: New
Never thought 67 1/2 volt batterys were made any more. Works great in my small portable tube radio. Battery is good quality but can be more expensive than the value of the radio but it's cool to have the radio working well.
Verified purchase: Yes | Condition: New
Best Battery I've ever owned! I take it with me everywhere I go and always show it to guests when they come over. The only problem is I bought it for a Zeiss ikon 'IkoBlitz"flash unit that I can't find any bulbs for it. So its basically worthless to me!!!!!!!!!!
Verified purchase: Yes | Condition: New
Batteries work well for the PR25A test set, used by cable splicers for many years. Only available type I have seen.
Verified purchase: Yes | Condition: New
The batterey is a wonderful find nice to aee it now available again and the price is excellent too.
Verified purchase: Yes | Condition: New
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