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Need help building a supplemental battery for portable DVD player.

Discussion in 'Electronic Basics' started by Fake email, Dec 30, 2005.

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  1. Fake email

    Fake email Guest

    Hey all!
    I may be in the incorrect forum so please excuse me if I'm wrong.

    I have a portable DVD player (AMW m281) with a detachable battery
    (BT01). I would assume it's rated for at least the length of a movie
    (2 hrs?). I have read that with Lithium Ion batteries every deep
    discharge cycle decreases their capacity. I wanted to run the DVD for
    my 2.5 hour trip.

    I wanted to build a battery pack that I could carry with the DVD that
    would at least double the time I could run the player. That way I
    would avoid a deep discharge on each battery.

    There is a DC connector on the DVD and the battery. Both say DC
    9volts. The battery is LI-ION 7.2 volts 3000 mAH. I would assume all I
    need is to supply 9 volts to the batteries dc connector to supplement
    it?

    What is a good battery to use. *9* volt LI-ION I would assume? Is
    there such a thing?

    I would carry the extra battery in a bag with the dvd so any consumer
    type battery would fit. I would probably wire two batteries in
    parallel and connect it to the DC in connector.

    Thanks for your help.

    Steve
     
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