Connecting two batteries for an Iontophoresis machine

Discussion in 'The Projects Forum' started by Frederik85, Mar 9, 2016.

  1. Frederik85

    Thread Starter New Member

    Mar 9, 2016
    1
    0
    Hi,

    Just checking, here a question of an electronics n00b, I am making a new Iontophoresis machine and would like to connect an (Ultracell) 12V battery to another (Ultracell) 6V battery like they do with 6V batteries in the video below. Can I do that and get ~18V and/or might I screw up my batteries in some way?



    Thank you
     
  2. #12

    Expert

    Nov 30, 2010
    16,343
    6,828
    Sure you can put batteries in series to get more voltage. That's what they are doing internally.
    Just be aware of the amp-hour ratings. Two batteries the same size with different voltages...the higher voltage battery will run out of juice before the lower voltage battery.
     
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