Battery Chne

usersmanual wrote:

tropical36 wrote:

kidkasha wrote:
1999 Fleetwood Discovery. Is it possible to chancy 4 6 volt batteries the six volt batteries to 2 12 volt batteries? Has anyone done this successfully, and what are there any issues.

No problem and with our coach, it originally came with 4 12v AGM Group 24 batteries. Dealer for previous owner, changed them out to 4 6v wet cells. I put them back to original specs., although, not so sure if having used 4 6v AGM's would have provided more power or not. Depending on the sizes and space available actually and it's just a matter of changing the series/parallel connections to straight parallel. Naturally, two 3/0 jumpers got lost in the process, so had to make those up to complete the install and found out that large crimp on lugs aren't readily available, unless from a electrical distribution house. At least not from Home Depot and the like.
If in doubt with the connections, seek help and/or check the output voltage before connecting up the last lead, which should be your neg. ground.
In my case, I have quite a few neg grounds returning and quite a few plus pos. going out, as well.

I have to ask why? 4 twelves gave you less than 4 6 Volts for total reserve capacity

You'll have to ask Fleetwood American and I just chose to put them back like factory. Now, having said that, the math would suggest otherwise for power capabilities and all this does depend on battery sizes.
One must remember, that parallel connections double the amp capacity and leaving the voltage the same, whereas series connections leave amp capacity the same and in turn double the voltage. Now given that two 6's make one big 12 and four 6's make two big 12's, you're still talking two 12's and not four 12's. So, again, it depends on the sizes and I never bothered to check with what might be available with 6v AGM's as an alternative, but feel that they would have to be quite large to be equal. In essence, the said 6v makeup of two 12's would have to be larger than the four 12v AGM Group 24 batteries, that I have in there now.
Can anyone enlighten me further on this and possibly point me to four 6v AGM deep cycle batteries that would surpass my four 12's?