Ron Wanttaja wrote:

Not a real drawback, as the tach also includes a secondary counter that
can still be used to keep track of minutes. However, 200 hours is about
five years of flying for me, and the built-in battery of the Tiny Tach
is only good for 5-8 years. At that point, I'd better hope the company
is still operating...or come up with some other solution.

Ron Wanttaja

Here is a picture of the insides of a tiny tach. The gray stuff is soft potting compound similar to BMS5-95. The battery was a common
3v Lithim Ion button cell welded to the tabs before potting. If I ever find another tiny tach that needs a new battery, I will cut a
hole right over the battery with a rotabroach or a mill instead of splitting the case. You can't open the case without breaking it

http://tinyurl.com/tinytach

--
John Kimmel


So in this world
Of the simple and odd,
The bent and plain,
The unbalanced bod,
The imperfect people
And differently pawed,
Some live without love...
That's how they're flawed.