Battery testing meter
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| Sep 15th 2011, 06:34 | |
K8JPTotal Topics: 0 Total Posts: 0 |
I remember a discussion about checking batteries, like AAA, AA, 9V, etc. With a Hi-Z meter, there is no loading of the battery. To check the like batteries, there were suggested load resistances for the typical cells and then you could use a Hi-Z digital meter to have a fair evaluation of the battery being measured. I can not seem to find those suggested values anywhere. |
| Sep 15th 2011, 16:13 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
ZTS sells a patented pulse battery tester. The patent application lists the actual resistances they use in their prototype. http://www.freepatentsonline.com/6823274.html Zack Lau W1VT ARRL Senior Lab Engineer |
| Sep 16th 2011, 04:10 | |
aa6eTotal Topics: 0 Total Posts: 0 |
My cheap VOM has a battery test option for that measures voltage under load for 1.5 and 9 V batteries. I measured the loads they use: 43 ohms (1.5V) and 2.2 K (9V). This corresponds to 52 or 36 mW power drain, respectively. Your mileage may vary! 73 Martin AA6E ARRL Technical Advisor |
| Sep 16th 2011, 08:42 | |
K8JPTotal Topics: 0 Total Posts: 0 |
Yes, Martin. There are cheap "Just battery checker" meters that put a small load on the battery being tested. If I put the same load on these batteries, I can use my DVM to quickly get an approximate heath of a battery, but I did not remember what those load values were. You put me in the ball park. Cheers, Joe, V31JP/K8JP. |
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