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 > 6v vs. 12v house batteries

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crasster

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Posted: 12/02/13 10:37am Link  |  Quote  |  Print  |  Notify Moderator

You need the amp hours, not just the volts.

I would suggest 4 6v golf cart batteries as they have a lot of amp hours in them.

Wire 2 of them in seiries to make 12V, the other two in series to make another 12v. Then wire the 2 12v series of batteries in parallel to make a 12v high amp hour system that will work great for boondocking.


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Posted: 12/02/13 04:25pm Link  |  Quote  |  Print  |  Notify Moderator

carp65 wrote:

If you have 4 6v house batteries, would you be better off to replace
them with 2 12V house batteries.



NO!!!


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Blaster Man

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Posted: 12/02/13 04:32pm Link  |  Quote  |  Print  |  Notify Moderator

carp65 wrote:

If you have 4 6v house batteries, would you be better off to replace
them with 2 12V house batteries.


Lots of info provided so far...some confusing. Bottom line, four 6volts are better and more powerful that two 12volts.


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pianotuna

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Posted: 12/02/13 04:36pm Link  |  Quote  |  Print  |  Notify Moderator

Hi,

That is, unless the two 12 volts are 8D. Then the pendulum swings to the 12 volts. It would probably cost more.

Blaster Man wrote:

Lots of info provided so far...some confusing. Bottom line, four 6volts are better and more powerful that two 12volts.


* This post was edited 12/02/13 05:01pm by pianotuna *


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Blaster Man

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Posted: 12/03/13 05:57am Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

Hi,

That is, unless the two 12 volts are 8D. Then the pendulum swings to the 12 volts. It would probably cost more.

Blaster Man wrote:

Lots of info provided so far...some confusing. Bottom line, four 6volts are better and more powerful that two 12volts.


Discussions that involve 8Ds or 4Ds is an apples to oranges comparison.

harold1946

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Posted: 12/03/13 06:06am Link  |  Quote  |  Print  |  Notify Moderator

Blaster Man wrote:

pianotuna wrote:

Hi,

That is, unless the two 12 volts are 8D. Then the pendulum swings to the 12 volts. It would probably cost more.

Blaster Man wrote:

Lots of info provided so far...some confusing. Bottom line, four 6volts are better and more powerful that two 12volts.


Discussions that involve 8Ds or 4Ds is an apples to oranges comparison.


The thread is about 6 or 12 volt, not the size of the battery. There are 6 volt deep cycles in larger sizes also that have more than 300 AH ratings each. For example; Lifeline GPL-6C, 300 AH
It all comes down to the amount of room in the battery bay. How many AH one wants. What is the budget. Weight.

* This post was edited 12/03/13 06:30am by harold1946 *


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topflite51

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Posted: 12/03/13 07:44am Link  |  Quote  |  Print  |  Notify Moderator

Age old problem. 6V vs 12V. If you have space for 4 batteries for the coach then go with 6V's, if you don't then probably should go with 12V's. Reason is simple enough. ASK yourself what happens when you have two 6Vs for power inside your 12V powered coach and one of the 6V's (2 months old) shorts out, leaving you with only one 6V to power your refrigerator controls, water pump and other necessary items. As I said if you have the room for 4 6V's go with them, if not then don't.


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pianotuna

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Posted: 12/03/13 08:11am Link  |  Quote  |  Print  |  Notify Moderator

Hi Blaster,

Since he has four six volts there is room and weight capacity for 8d's. Apples to oranges is comparing dissimilar amp-hour ratings.

What matters is the total number of amp-hours the OP needs.

If he never boondocks, a single marine 12 volt will "fill the bill".

Blaster Man wrote:

pianotuna wrote:

Hi,

That is, unless the two 12 volts are 8D. Then the pendulum swings to the 12 volts. It would probably cost more.

Blaster Man wrote:

Lots of info provided so far...some confusing. Bottom line, four 6volts are better and more powerful that two 12volts.


Discussions that involve 8Ds or 4Ds is an apples to oranges comparison.


2oldman

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Posted: 12/03/13 09:27am Link  |  Quote  |  Print  |  Notify Moderator

topflite51 wrote:

Reason is simple enough. ... what happens when ... one of the 6V's (2 months old) shorts out, leaving you with only one 6V to power your refrigerator controls...(snipped quote).
This is specious reasoning.

The same argument could be applied to any 12v battery. What if someone dry camps with one 12v battery? Do we advise him/her to carry a spare? 2-6v batteries in series are nothing more than a 12v battery in two pieces, and it's no more likely to catastrophically fail than a 12v battery.

Having one battery fail is possible, yes, but probable? Hardly. And it's no reason to not use 6v.

* This post was edited 12/03/13 09:42am by 2oldman *

topflite51

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Posted: 12/03/13 11:08am Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

topflite51 wrote:

Reason is simple enough. ... what happens when ... one of the 6V's (2 months old) shorts out, leaving you with only one 6V to power your refrigerator controls...(snipped quote).
This is specious reasoning.

The same argument could be applied to any 12v battery. What if someone dry camps with one 12v battery? Do we advise him/her to carry a spare? 2-6v batteries in series are nothing more than a 12v battery in two pieces, and it's no more likely to catastrophically fail than a 12v battery.

Having one battery fail is possible, yes, but probable? Hardly. And it's no reason to not use 6v.
If someone had space for only one battery then he has to use a 12V, he would have no place for the other half of the battery using your scenario. Did not say not to use 6V's only said if you have space for only 2 batteries not to do it. It is not a false argument to so recommend given the roughly 5% failure rate of all wet cell batteries while under warranty including the vaunted 6V golf cart batteries that so many around here recommend. It is simply the old wives tale that 6V's are better and since you do it everybody should. As to boondocking, so many make that claim that never boondock a day in their lives, as they believe in pluggin' in. If you have the space for 4 by all means run your 6's, if not run 12's.

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