I have a slammed 426 hemi-powered '96 dodge ram (actually its a bone stock 318 I can dream though...) and every battery I have ever put in that thing has leaked and corroded. One time the alternator and battery went at the same time (one took out the other), two other times I had a cell or cells go bad. So I am on battery #4 or #5 in ten years. Every one leaked. The system charges around 14.2 with the engine running. Other than the corrosion and short battery life, I dont see any other problems. Normal Bv is around 12-12.5 volts and load tests good (not excellent, but good)

I just went to remove the current battery to install in my car temporarily and noticed it seemed to be venting slightly as I was pouring water/baking soda over it to remove the corrosion. I'm sure the venting and corrosion go hand in hand.

Could this be a problem of cheap batteries or symptomatic of a problem with my truck?