If they have solderable tabs they are most likely indeed rechargeable. I can't think of very many applications for single-use alkalines with solderable tabs.
To check them out, the best bet would be to try to charge them with a small DC supply and a current limiting resistor to hold the current to maybe 50 ma, and then see how they hold up under a similar load like a flashlight bulb. Nicads can degrade even with lack of use so don't be surprised if the results are disappointing unless the batteries are relatively new. Dave AB7E On 4/5/2011 12:58 PM, R. Kevin Stover wrote: > On Tue, 05 Apr 2011 12:36:13 -0700 > Vic K2VCO<[email protected]> wrote: > >> My brother-in-law just gave me a large box containing literally >> hundreds of what he says are recharageable batteries. That is all he >> knows about them. They are in sets of three in series, AAA size, with >> solderable tabs. I suspect they are nicads, but don't know. NOTHING >> is written on them. They are green, for all that means. >> >> Can anyone guess what they might be or suggest a way to find out? >> Could I put them in series/parallel to make a battery pack for my K2? >> Does anyone want some? >> >> Or should I be looking for a way to dispose of them (I'm sure they >> count as hazardous waste)? > AAA Ni-Cad cells have a nominal voltage of 1.25V same as Lithium. > Alkaline have a 1.5 volt nominal voltage. > > I'd say if the three cell packs have a of 4.0 or better they are > Alkaline. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
