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Using a 12V UPS battery to charge my TF700 tablet

Discussion in 'Power Electronics' started by Syn, Jun 11, 2013.

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  1. Syn


    Jun 11, 2013
    I want to bring my TF700 tablet with me on fishing trips this year to use my Google maps offline and topo maps and camera. Problem is battery run time. So I need an external battery to charge it.

    Tf700 tablet needs 12v 1.2-2 amps to charge.
    I have a few charged RBC 17 UPS batteries sitting around. 12v 7.5-8 amps battery

    I have a spare ebay $5 tf700 charging cable I can hack to get to the black and red leads and a plastic container (with air vents) for the battery.

    Reading up on it, people said I don't need to worry about current pull, because the tavblet will take only 1.2-2 amps it needs, but I was thinking of attaching a 2amp fuse just in case. Is that true?

    Would this charging system work? Not in the mood to spend $70 for an anker battery pack that would probably be a smaller battery.

    interesting read
    Last edited: Jun 11, 2013
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