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E46 Convertible Battery : Should I pick normal or AGM?

4437 Views 20 Replies 13 Participants Last post by  RRRM8E
I have a 330Ci vert that I don't use a lot, battery is dead and I am deciding between buying a normal group 94 battery or an AGM.

From what I researched, I didn't find enough information about AGM batteries with E46 verts. I read that they have an special "anti-vibration" setup; which got me thinking that's what AGM batteries are for as a benefit. However, I think these batteries didn't even exist back then.

Any recommendations?
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AGM batteries have been around for a while (before e46's). I would get an AGM, if the previous owner (my brother) hadn't just replaced the battery, I would have an AGM. I put it in every vehicle I own, including my motorcycle.
AGMs seem to last longer in every vehicle I put them in. I have one in my 2008 A4 that has been in there since 2011. I also occasionally trickle charge all the batteries in my vehicles, my motorcycle is always on the trickle charge when not in use.

I wire in battery tender extenders so I can easily connect without having to open the hood.
I wired my Battery Tender in the drug bin using the jump posts. Open hood, connect the 2 pin connector and route wires through the back of the hood seal next to front window and close hood.
This is where I put mine too (under the hood), but I have my extender going down the side next to the washer fluid bottle. I open the hood an connect the cable and lay the hood in the open but down position. My car is in the garage, but if it was outside, if the hood was lifted, the alarm would go off.
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