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 > what kind of batteries do i have?

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rvshrinker

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Posted: 11/17/19 07:52am Link  |  Quote  |  Print  |  Notify Moderator

i am attaching a parkit360 trailer dolly to my TT and the battery hookup differs depending on whether I have 6 or 12 volt batteries. i have two of them. how do I tell?

BB_TX

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Posted: 11/17/19 08:26am Link  |  Quote  |  Print  |  Notify Moderator

If the batteries have vent/filler caps, a 6 volt will have 3 caps and a 12 volt will have 6 caps.

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Posted: 11/17/19 09:21am Link  |  Quote  |  Print  |  Notify Moderator

If you haven’t done anything to your newish RV, 99% theyre 12V. You should look at them. They say right on the battery.
Even If you do have 6V in series, you still have a 12V system.


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Posted: 11/17/19 10:59am Link  |  Quote  |  Print  |  Notify Moderator

Short answer is 12 volts. Count the caps (in reality you want to count the cells under the caps). Each cell in the battery is 2 volts. But regardless of 6 or 12 volt batteries you're going to be hooking up to the batteries in a 12 volt configuration.


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Old-Biscuit

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Posted: 11/17/19 12:04pm Link  |  Quote  |  Print  |  Notify Moderator

Two 6V batteries (Series) VS Two 12V batteries (Parallel)

[image]




6V wired in series....
POS on one connected to NEG of other battery

You would connect your Power Dolly cable to POS of one and NEG of other



12V wired in parallel.....
POS connected together and NEG connected together

You would connect your Power Dolly cable to a POS and NEG on just one of the batteries (Same Battery)


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Posted: 11/17/19 12:44pm Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

i am attaching a parkit360 trailer dolly to my TT and the battery hookup differs depending on whether I have 6 or 12 volt batteries. i have two of them. how do I tell?
The batteries will be wired for 12v either way. Connect same as the main RV power cables are connected and you are good to go.
Picture just above shows perfectly what I am saying.


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Posted: 11/17/19 03:03pm Link  |  Quote  |  Print  |  Notify Moderator

Good advice. If you are not sure if it's 6 or 12 based on the above.

Harbor Freight has some very nice 5.00 dollar volt meters. Learn how to use 'em.


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rvshrinker

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Posted: 11/17/19 05:00pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

rvshrinker wrote:

i am attaching a parkit360 trailer dolly to my TT and the battery hookup differs depending on whether I have 6 or 12 volt batteries. i have two of them. how do I tell?
The batteries will be wired for 12v either way. Connect same as the main RV power cables are connected and you are good to go.
Picture just above shows perfectly what I am saying.


I'll get in there and look tomorrow but assuming two x 12v then pos to pos on one battery then neg to neg on other battery. Remove in reverse order?

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Posted: 11/17/19 08:52pm Link  |  Quote  |  Print  |  Notify Moderator

Yes that is correct for 12 volt batteries.

rvshrinker

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Posted: 11/23/19 10:09pm Link  |  Quote  |  Print  |  Notify Moderator

Huh. Turns out i have 6v batteries. What are the implications of that vs 12v?

By the way, dolly worked great! My RV is tucked neatly into its carport, hooked up to a large propane tank and home 30 amp RV service. I also dumped in my new sewer cleanout and cleaned the black tank using sani clean.

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