There are three big reasons to go with 6 volt deep cycle golf cart batteries:
- They are (relatively) inexpensive. < $1 per amphour for FLA, about twice that for AGM.
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- They are easy to find, any town with a golf course will have a battery source near by (some golf course maintenance shops will sell you batteries if you ask nice). True deep cycle 12V batteries are harder to find.
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- Lead is heavy. It is easier to muscle 60 lbs twice than 120 lbs once. And batteries are usually sited in an inconvenient place for lifting.
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A 6 volt battery is three 2.1V cells connected in series, a 12V battery is six 2.1V cells in series. If hooked up right the charging source won't know the difference.
jim
OK help me understand if you will; I really don't know the answer....what is inherently deficient in using two 12v AGM batteries that are NOT deep cycle batteries if the charge is correctly maintained via a solar, AC or the alternator on the vehicle?
As for weight, my 12v AGMs are no where near that weight you mentioned and my battery box in the Hawk is easily accessed [side dinette]....
My way of approaching this is if it works...stick with it...and KISS...but hey I could and may be wrong!
Phil
Ps...
Just read this:
"You can use two 12-volt 24 group batteries wired in parallel that provides 140 to 170 AH. Parallel wiring increases amp hours but not voltage.
If you have the room, you can do what a lot of RVers do and switch from the standard 12-volt batteries to two of the larger 6-volt golf cart batteries. These pairs of 6-volt batteries need to be wired in series to produce the required 12-volts and they will provide 180 to 220 AH. Series wiring increases voltage but not amp hours."
http://rvservices.ko...v-batteries.asp
Edited by Wallowa, 25 June 2018 - 02:36 AM.