Electronics > Projects, Designs, and Technical Stuff
good 9V battery
Pawelr98:
For me two small Lipo cells in series is the way to go.
8.4V full, 6V flat.
Just around what is needed for a 9V battery replacement.
Or with some devices I just use 2x18650 in a bracket, attatched to the device.
Put it behind the meter, isolate it good and it won't die for a while.
I use this method with tired (sub-1000mAh) 18650 cells and cheap meters that usually go through 9V batteries rather quickly.
Generally speaking 14500 format would have been better for handheld meters.
No need to even change cases as it's the same format as standard AA battery.
There are even AAA sizes li-ion cells available (10440).
coppercone2:
The analogy I get between 18650s used in lower power devices is like a word processor now requiring a super computer to run
David Hess:
--- Quote from: Alex Eisenhut on March 25, 2017, 01:13:15 pm ---I can't believe that in the 21st century we are unable to build a 9V battery that lasts more than a few months in a DMM.
--- End quote ---
We solved this problem in the 1980s with multimeters which operated for 2000 hours or more using the same 9V batteries that we have today. It is not the battery's fault that you bought a junk multimeter.
BravoV:
--- Quote from: BravoV on March 25, 2017, 01:29:32 pm ---Panasonic
--- End quote ---
Quoting my self, Panasonic ? No more ! >:(
Details -> HERE
Alex Eisenhut:
--- Quote from: David Hess on July 06, 2020, 11:22:45 am ---
--- Quote from: Alex Eisenhut on March 25, 2017, 01:13:15 pm ---I can't believe that in the 21st century we are unable to build a 9V battery that lasts more than a few months in a DMM.
--- End quote ---
We solved this problem in the 1980s with multimeters which operated for 2000 hours or more using the same 9V batteries that we have today. It is not the battery's fault that you bought a junk multimeter.
--- End quote ---
OK how do I return my Tektronix DMM249? Obviously Duracell makes a quality battery, so that's not the problem... ::)
Ever since using alkaline batteries from the dollar store, my multimeter secretly redesigned itself at night using components it found on the floor. No more dead 0V batteries.
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