Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Am I safe using individual batteries in a series connection?

  1. Aug 20, 2015 #1
    I am building a system which uses multiple components, each has varying voltage. The large motors use a voltage of 14-16 Volts, thus there are several batteries wired in series, providing this voltage.

    Now, there are other components such as microcontrollers, multiple sensors and smaller servos which use a lower voltage of 7 Volts. Say I have two batteries, could I use each one individually, while also having them connected in series configuration?

    I am aware they may be discharged unequally. But other than that I don't see a problem. This picture is a concept.

    Thanks,
    -Jarfi.
     

    Attached Files:

    • ddd.jpg
      ddd.jpg
      File size:
      18.8 KB
      Views:
      35
  2. jcsd
  3. Aug 20, 2015 #2
    Sure it will work but you observation about unequal discharge is correct and will be a problem regarding monitoring of battery condition.
     
  4. Aug 20, 2015 #3

    meBigGuy

    User Avatar
    Gold Member

    Yes it will work within the limits you pointed out. The more optimal solution is a buck converter to efficiently produce a lower voltage from the higher voltage. Also, circuit 1, 2 and the motor do not share a common ground, which can be problematic.
     
  5. Aug 21, 2015 #4
    buck-converters seem like a pretty good option, I'll take a look at them. Thanks
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Am I safe using individual batteries in a series connection?
  1. Batteries in Series (Replies: 5)

  2. Series battery (Replies: 39)

  3. Batteries in series (Replies: 6)

  4. Will i be safe if i (Replies: 7)

Loading...