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    Question about Battery

    I have some 12 V lead-gel batteries for my existing devices. Now I need 24 V power supply for my new device. I should
    1: use two 12V batteries connected in series to have 24V or
    2: buy 24V battery with a charger or
    3. use one 12v batteries and buy a dc-dc converter to step voltage up to 24V

    If I use a battery, do I need protection/regulation circuit?

    Many thanks in advance.

    p.s. sorry, my linux pc does not support Thai font :(

    จากคุณ : UnlimitedDreams - [ 25 ก.ค. 50 00:19:59 ]