A friend bought a new DMM that came with a typical Golden Power battery. When they went to turn on the meter, it appeared dead. The measured the battery voltage, it appeared fine. Swapped the battery and the meter worked fine. I later checked the battery myself and it measured something like 9.4 volts. I installed it into a meter and the same thing, the meter was dead....
I thought a bad rivet as every battery I have seen normally will read a lower voltage. Something about this one seems unique.
I pulled out my box of batteries from all the meters I had killed and sorted out the Golden Power ones. These were then numbered.
Battery, Date Code, Weight (g), Open Voltage
1, 2015-04, 34.5572, 9.709*
2, 2016-05, 34.9859, 9.595
3, 2016-06, 35.8182, 9.402
4, 2015-04, 35.8207, 9.442
5, 2016-08, 35.4947, 8.758
6, 2015-10, 35.0441, 8.986
Battery 5 and 6 have been in use. Battery 1 is the battery in question. Note that Battery 4 & 1 have the same date code.