I have been trying to find the best and biggest battery for my 08.
Ive read quite a few threads and responses and the more I read the more I am unclear about it.

Some threads talk about our alternator not putting out the correct voltage to properly charge AGM batterries, other threads completely ignore this and have many people recommending different agm batteries.
I do some camping with the runner but basically the battery is just for starting. I live in the northeast and do spend some time in northern part of ny state over the winters.

So -- does our stock charging system correctly charge the AGM batteries or not ? If not then why are so many recommending them and what have their results been over the years ?

Also what is the biggest battery I can fit properly without any mods ?
I dont mind spending a few extra bucks to get a bigger or better battery within reason.


Thanks for any help you can provide.