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-   -   Can you mix 6 volt and 12 volt batteries. (http://www.diychatroom.com/f18/can-you-mix-6-volt-12-volt-batteries-96489/)

 hbnavarrete 02-24-2011 09:47 PM

Can you mix 6 volt and 12 volt batteries.

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

 nap 02-24-2011 10:37 PM

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.

 NitroNate 02-24-2011 10:59 PM

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.

 Red Squirrel 02-24-2011 11:49 PM

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.

 Saturday Cowboy 02-25-2011 12:45 AM

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.

 Red Squirrel 02-25-2011 01:04 AM

1 Attachment(s)
Oh yeah, you'd want to ensure each "cell" is same voltage.

 Saturday Cowboy 02-25-2011 02:15 AM

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

 Red Squirrel 02-25-2011 05:34 PM

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.

 kbsparky 02-25-2011 06:18 PM

IF you need 18 Volts, go for it! :laughing:

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