FYI -
I was doing routine maintenance on my 14 month old T105 6V batteries. I noticed the gap in the seam between the top and bottom of the case was wet on one battery. Dried it off, and it filled back up right away. The other three are fine. Called the supplier and was told this is a known problem for Trojan T105 batteries built in the last couple years. They said to bring it in for a warranty claim. I brought it in, and got a no hassle exchange for a new T105 battery with new warranty.
I took the photo after wiping the seam. Hard to see the drips in the photo, but it's starting to leak if you look close. Worthwhile for everyone with Trojan T105's bought in the last couple years to look close at the seam between the top and bottom of the case.
Wow. I bought mine last summer. I'm going to check for this straight away. Thanks for the heads-up.
I bought four new ones this year too, that I need to check! I marked up Jon's photo so all can see where his leak was.
Check all sides of each battery.