Did I read this last paragraph wrong?

"Diesel Tiny-Tach™ — Operating Instructions
When engine is started, the unit will automatically switch to the Tach Mode. When the engine is shut off and no transducer signal is present, the unity will switch to indicate Total Run Time (TOT), beginning in minutes and switching to hours after 60 minutes is reached.

The microprocessor and display are powered by an internal lithium battery totally independent of the external amplifier power source, so run time hours will not be lost if the external source is disconnected. This battery is not replaceable but should last five years."

 

Humm i stand corrected, sorry

 

I was hopeing I was wrong, it looked like a simple soloution.
Does that mean that the whole unit has to be replaced or just a small part?
thanks

 

The internal battery can't br replaced,at leaste,according to my instruction sheet. I talked to a guy that has one, and ha had went nearly eight years,and his was still working fine.

 

From what i understand you can just replace the "head unit" piece and its like $45 or so.

 

When this internal battery dies, does the tach still work, but not store data for hourmeter? I don't care much if the hourmeter dies, but I don't want to buy a tach every 5 yrs.

 

the head unit, tach/hour both die, i havent looked but i bet it could be replaced with a but of ingenuity, is prolly just a watch type battery.

 

I installed the Tiny Tach and it works great, and was easy to install. Thanks guys.

 

I've had one for over 5 years and it is still working. Had it before
I found one of the OEM tach's. I left the Tiny Tach in after the big one was installed cause it makes things a lot easier when adjusting Idle, etc. When it dies, I'll get another one. Will probably look at replacing the battery in it before ordering another one though.

 

I have one on my ATV, and it has been problem free for over 4 years