Battery Post Protector Spray

[RayandWendy]

Way back when I use to spray battery terminals with a red protectant spray when ever I installed a new battery in a car. Is that even necessary when I install my new AGM house batteries since they are not normally vented?

Later...
Ray

[GPCPL]

The lead post's and connectors will still oxidize regardless of battery chemistry composition. Exposure to oxygen causes the oxidation, battery chemistry may exacerbate the process. It definitely won't hurt to coat with a battery terminal spray. I just put a little grease on the connections to prevent the oxidation, but that attracts the dust.

[brobox]

I am old school and have been using a light coat of vasoline since I was a teenager working on cars. Still use it today.

[RonandDeb]

I agree that it certainly cannot hurt to clean and protect the terminals. CDC makes some cleaners and protectants and Amazon has 'em all. I bought some that I could use on all my vehicles since the can is pretty big. A little goes a long way.

Good luck!

[Cruzer]

Necessary? No. Helpful? Yes. You won't have the acidic vapors from the AGMs that would from flooded but there is still corrosion from the atmosphere. anything helps, even grease as long as you don't wash it off when you pressure wash the batteries.

As to pressure washing the batteries - you have to be careful with AGMs as to compared to flooded. AGMS do have ventilation valves to allow for heat expansion and contraction. If you blast away with a high pressure washer you can inject some water into the batteries. You don't want to do that.

But you do want to keep the battery tops clean. Any grit, dirt or moisture that settles on the top of the battery can form a weak circuit between the posts that will discharge your batteries over time. That's why most GM originally went to the side post batteries at the time. Keeping them clean is important. Big Mike at Spartan recommended spraying them with the original Windex with Ammonia D and wiping them off.

[RayandWendy]

Well, finally got my old Discovery house batteries changed out for Lifelines. Couldn't find any date code on the old ones but they looked well worn. After sitting 24 hrs without a charger they were:
4@6.2v
1@5v
1@4v
2@2.9v

Later...
Ray