Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Old May 27th 16, 03:53 PM posted to sci.electronics.repair
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I've had a Nikon 400 laser rangefinder for a number of years now, probably 10 to 12, something like that. We use it infrequently for measuring distance - how far did that Frisbee throw or golf shot go, how far away is that building, etc. It's very useful for sports, none of us hunt any more.

Originally a battery lasted at least couple of years. CR2s are about $10 each, so that wasn't bad.

Now it's a couple of weeks. They seem to discharge when not being used. Is that characteristic of an older electronic device, that it may develop some small leakage current over time. I can leave the battery out until I need it, but I'm curious.


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Old May 27th 16, 11:59 PM posted to sci.electronics.repair
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Tim R wrote:

I've had a Nikon 400 laser rangefinder for a number of years now, probably
10 to 12, something like that. We use it infrequently for measuring
distance - how far did that Frisbee throw or golf shot go, how far away is
that building, etc. It's very useful for sports, none of us hunt any
more.

Originally a battery lasted at least couple of years. CR2s are about $10
each, so that wasn't bad.

Now it's a couple of weeks. They seem to discharge when not being used.
Is that characteristic of an older electronic device, that it may develop
some small leakage current over time. I can leave the battery out until I
need it, but I'm curious.

I have a digital caliper that uses an MS76 cell. Seems to have the same
problem, battery used to last well over a year, now it lasts a few weeks,
maybe. I just take it out when not in use.

Jon
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Old June 5th 16, 05:27 PM posted to sci.electronics.repair
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Default battery life changes, similar to answering machine thread

On Fri, 27 May 2016 06:53:38 -0700, Tim R wrote:

Originally a battery lasted at least couple of years. CR2s are about
$10 each, so that wasn't bad.

Now it's a couple of weeks. They seem to discharge when not being used.
Is that characteristic of an older electronic device, that it may
develop some small leakage current over time. I can leave the battery
out until I need it, but I'm curious.


It's certainly characteristic of batteries bought off Ebay or other
dubious sources. Could that be your problem?
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Old June 6th 16, 03:19 PM posted to sci.electronics.repair
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Default battery life changes, similar to answering machine thread

You can find them (brand cells) at microbattery for $5 each !


Tim R a écrit :

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Old June 7th 16, 10:19 PM posted to sci.electronics.repair
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Default battery life changes, similar to answering machine thread

On Friday, May 27, 2016 at 2:59:25 PM UTC-7, Jon Elson wrote:

I have a digital caliper that uses an MS76 cell. Seems to have the same
problem, battery used to last well over a year, now it lasts a few weeks,
maybe. I just take it out when not in use.


There are LR44 alkaline batteries,and silver batteries in the same size
designated SR44. And there's a dozen or so pseudonyms for each of the
types. MS76 is not in the short list he

https://en.wikipedia.org/wiki/LR44_battery

Most inexpensive calipers (mine, at least) that use these cells, are not
ever truly turned OFF. Pulling the battery out during idle time is a good
plan (until you damage the battery door).

To make matters worse, battery prices range from $5 to $0.05, and might not
be indicative of quality.


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