I have a digital height gauge that eats batteries. Not a cheap Chinese made one, but a fairly high quality Japanese made one. It uses one SR44 battery. For some reason it has started using batteries much faster than it used to. I have tried several different brands of batteries from several different sources and they all seem to last about the same. Because of the bulk of the sliding portion of the gauge I could easily attach a lithium coin cell holder and associated voltage dropping circuitry. Even a couple AA size batteries. I did try a typical alkaline AA cell but it didn't last much longer than a button cell. I think this is because the display starts flashing when the battey voltage drops to 1.45 volts or less. So what would be best for the longest battery life? Thanks, Eric
- posted
6 years ago