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Looking for rechargeable 9v battery recommendation tia sal2

Discussion in 'General Electronics' started by [email protected], Aug 30, 2006.

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  1. Guest

    Greets All

    I'm going to be traveling and have a small device that needs to run 3 hours
    on a 9v battery everyday. I'm looking for a good/great rechargeable 9v
    battery. I'll have to get 2 of them so I will be able to use one while the
    other one is in the charger. Does anyone have any recomendations?

    Thanks
    Rick
     
  2. Robert Baer

    Robert Baer Guest

    All "9V" re-chargeables are 7.2V, whether NiCd or NiMh, so take that
    into acount, that is to ask "does the item run with the NiCd "9V" battery?"
    Now you could rig up seven NiCD "D" cells in series for 8.75V or
    eight for 10V and regulate down to 9V.
    Having larger cells gives a longer useage time after charging.
     
  3. Gerald

    Gerald Guest

    Rick,

    I have purchased several types off the web, here's what I have found:
    You can get a charger that charges 2-4 9 volt batteries at a time.
    They are in a 9volt package, but are a little less than 9 volts.
    They don't last nearly as long as alkaline, and MUCH less than 9
    volt Lithium batteries.

    I was using mine for 9 volt LED lighting. I bought a bunch of these
    Pak-lite flashlights from 9voltlight.com. Even though they seem to
    last forever, I like the idea of using rechargables.

    I found that they are just a little dimmer with the rechargable
    batteries, and since I use about a dozen of them throughout the house
    per night (the power goes off often!) I don't worry at all how long I
    run them on high.

    Gerald
     
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