Hello All,At church we are using Ansmann 9V/250mAh NiMH batteries, lots of them. After a few years they are gradually reaching the end of their useful life. Looking around I found they now cost about $13 a pop and up. Amazon even lists them for a whoppping 20 bucks. Yikes. Maybe because of the falling Dollar.Is there any other brand from Asia that's a good deal? I'd rather not buy from some of the east coast photo dealers anymore because last time I experienced, ahem, not so honorable behavior.Oh, and to those who develop portable gear: Do _not_ design around 9V batteries ...-- Regards, Joerg"gmail" domain blocked because of excessive spam.Use another domain or send PM.

Nickel-Cadmium, Nickel Metal Hydride, and LeClanche (dry) cells all have a useful life that extends down to about 0.9V / cell (this is more debatable with Ni-whatever, as the knee is pretty sharp after 1.1V/cell -- dry cells tend to peter out, rather than dying off suddenly).Dry cells will give you more time above 7.2V than NiCd or NiMH, but if you die off at 7.2V you're cheating your customer out of half of his battery capacity.So go ahead and design _properly_ for 6-cell NiCd, NiMH or dry cell use -- just remember that means you should run correctly from a hair over 9V (fully charged dry cells) down to 5.4V (just about crapped out all of above). You can get away with 6V at the low end, hurting your dry cell customers more than you Ni-whatever customers.But I'd go all the way down...--

I'll let you guys know when we've had them through the paces. I hope I remember ... :-)-- Regards, Joerg"gmail" domain blocked because of excessive spam.Use another domain or send PM.

9V NiMH batteries, high capacity, any good deals?

Oct 26, 2009 22 Replies

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Joerg 16 years ago

Yesterday I asked our church to order some of the Tenergy batteries that Roger had suggested. Around five bucks a pop with shipping, that would be very reasonable if they work out. So we'll get four now, test the heck out of them, and then if ok replace all the others.

Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.

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JosephKK 16 years ago

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I have used Tenergy before and was pleased with them. I hope your experience is the same.

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Joerg 16 years ago

I'll let you guys know when we've had them through the paces. I hope I remember ... :-)

Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.

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