

| Subject: | Re: Multimeters |
| From: | Matt |
| Date: | Thu, 5 Nov 2015 16:12:13 -0800 |
You can use any cheapo multimeter for alkaline battery checking. Just dont use it for high current applications, check youtube videos of cheapo meter testing explosions. There is a good list of battery testing options using a meter at this forum: http://electronics.stackexchange.com/questions/125863/how-should-i-use-a-multimeter-to-determine-which-aa-batteries-to-keep-and-which Also take a look at alkaline cell discharge curves for your cell size. This will show you how much capacity is left for different loads. http://ww2.duracell.com/media/en-US/pdf/gtcl/Product_Data_Sheet/NA_DATASHEETS/MN1500_US_CT.pdf Cheers, Matt On Nov 5, 2015 3:41 PM, "David Beierl" <dbeierl@attglobal.net> wrote: > At 05:30 PM 11/5/2015, Anthony Egeln wrote: > >> I've been looking for a good excuse to buy a moderately priced multimeter >> for quite some time, and I think I may have one now. >> Can you use a multimeter to check household batteries? Â I have a box >> full of AA, AAA and 9V batteries that my late mother had accumulated, and >> while they may be out of date I want to make sure they are really done >> before taking them to our community hazmat pick up this Saturday. Â >> I was going to buy a "battery checker" on Amazon and I started thinking >> that a multimeter might be able do this just as well and I'd have my excuse >> to buy the instrument. >> There are a lot of recommendations on the archive for which multimeter to >> buy, but none very recent. Â I'd love to have a current recommendation for >> a moderately priced instrument, digital or analog. >> Thanks, Ant >> > > Not really. To test a dry cell or dry battery you have to load it with > something approximating a working load. Digital meters in general have ten > megohms input resistance. My Radio Shack puts a 50 mA load on AAA, 150 mA > on AA, C, D cells. 3 mA on button cells and I'm not sure on the rest. > Ideally you'd dial in your desired load and cutoff voltage for your > particular applications. > > Yours, > David
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