Can You Mix 6 Volt And 12 Volt Batteries. - Electrical - DIY Chatroom Home Improvement Forum

 DIY Chatroom Home Improvement Forum Can you mix 6 volt and 12 volt batteries.
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02-24-2011, 09:47 PM   #1
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## Can you mix 6 volt and 12 volt batteries.

Can you mix 6 volt and 12 volt batteries on one bank?

02-24-2011, 10:37 PM   #2
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In a bank, no. In a grocery store, yes.

what's the scoop? Explain what you are doing.

I know you can connect the in series. The voltage will be additive. I am thinking, but not sure, that you should not hook them up in parallel.

 02-24-2011, 10:59 PM #3 Member   Join Date: May 2010 Location: San Antonio Posts: 437 Rewards Points: 340 no, you cannot connect batteries of different source voltages in parallel. if you do, the battery with the higher voltage will push current into the battery with lower voltage and something will get really hot or blow up. before something goes bad, you will get an output voltage equal to the lower of the two, in your case it would be 6 volts. bottom line, don't do it.

 02-24-2011, 11:49 PM #4 Wire Chewer     Join Date: Jun 2009 Location: Ontario, Canada Posts: 3,355 Rewards Points: 138 It will technically work, but I think when it comes to charging, you'll run into issues, assuming this is something that will be charged. I would use all same voltage/type of batteries in one bank.
 02-25-2011, 12:45 AM #5 Scared Electrician     Join Date: Nov 2009 Location: Colorado Posts: 715 Rewards Points: 500 well the only thing you could do is a series/parallel combo circuit. if you don't know what that is take some time to read up on it. __________________ Ragged Trousered Philanthropist Please follow the code - its there for your safety no matter how inconvenient.
 02-25-2011, 01:04 AM #6 Wire Chewer     Join Date: Jun 2009 Location: Ontario, Canada Posts: 3,355 Rewards Points: 138 Oh yeah, you'd want to ensure each "cell" is same voltage. Attached Thumbnails
 02-25-2011, 02:15 AM #7 Scared Electrician     Join Date: Nov 2009 Location: Colorado Posts: 715 Rewards Points: 500 there would still be some problems tho, different Amp-hr ratings of the batteries for example would cause the current of the bank to fall off as small batteries drained quicker __________________ Ragged Trousered Philanthropist Please follow the code - its there for your safety no matter how inconvenient.
 02-25-2011, 05:34 PM #8 Wire Chewer     Join Date: Jun 2009 Location: Ontario, Canada Posts: 3,355 Rewards Points: 138 Yeah for sure, you'd want to match the amp hour, but even then, that's getting complicated. Do you want the 6 volt batteries to have same AH as the 12v ones, or should the two combined be the same? Or is it more complicated then that? Best to just stick to all the same batteries. :P It will work, but how well, is another story.
02-25-2011, 06:18 PM   #9
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IF you need 18 Volts, go for it!

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