Reddit reviews Schumacher BAF-2 Battery Post Shims can be used for both the positive and the negative posts of batteries.
We found 4 Reddit comments about Schumacher BAF-2 Battery Post Shims can be used for both the positive and the negative posts of batteries.. Here are the top ones, ranked by their Reddit score.
Increase post diameter for a secure fitBattery Post Shims
Or some god damn post shims!
Schumacher BAF-2 Battery Post Shims
Lynx Battery Terminal End and Adapter
They're soft enough to easily conform as the terminal is tightened and they're barely noticeable once installed. I put one on my car last year and haven't had a problem.
A lead collar is a round cylindrical shell made of lead that fits between the battery post and the wire terminals and takes up the slack. A split collar has a slice taken out of the side to let it flex. Something like this or this.
I would try to avoid permanent changes. After all, perhaps you just have a battery with unusually small posts. But if you can make the ID of the terminal smaller, then that will make it tighter.
Even a shim would work, these are crazy cheap and easy, and work! http://www.amazon.com/Schumacher-BAF-2-Battery-Post-Shim/dp/B0060YI0YS/ref=pd_sim_sbs_auto_1?ie=UTF8&refRID=0BDZMX39Q4B0EX4NYCX6