How do you "open" a car battery top?

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I just got this well-reviewed battery fluid additive ("Charge-It") and I need to add it the battery water. (FWIW this is a regular, OEM car battery made by Mitsubishi.) My question is, how do you open up the top of the battery? It looks like ya need a flathead screw driver or sum kinda tool to get that top open. Any help appreciated, thanks in advance!!
 
While I'm not expecting this to be a "miracle" battery additive, I did see some good reviews for it. It's the only patented battery additive and whether it works or not, it cost less than $5. Since my car sees about 8 months of storage per year, I thought I couldn;t go wrong with an additive that supposedly helps with battery life.
 
There should be a plastic flap on the top of the battery that you can pry off to manually add water, or whatever liquid you desire.

Have fun.
 
Hi, well if you have a maintenance type battery where the cell covers can actually be removed, you can just use a large flathead screwdriver to pry off the covers. Highly suggest wearing chemical goggles, full face shield, and nitrile gloves when doing work with a battery.

If you happen to have a 'maintenance free' battery where the covers can not be removed then I don't think you'll be able to put the charge-it in there.

I've put charge-it in all my maintenance type batteries; not sure yet if it helps. Primarily it's supposed to keep sulfation or something off the lead in there I guess. I get it at Harbor Freight.
 
It won't work. FWIW I use to work for a large industrial battery company. They tried every thing. The best way to avoid sulfation is to keep the battery charged and the tops of the cells covered in electrolyte.

We used to cool the cells while undergoing the initial charging with recycled water that had sodium sulfate in it from the acid neutralization. Once in a while the cells got flooded by it and the batteries turned out great. So they tried adding sodium sulfate to them intentionally but never got good results.
 
Forget about any additive for a battery. When the car is stored buy a float battery charger (Battery Minder is one of the better ones) and leave it on the float charger for all of the months in storage.
 
Add some Jack Daniels; your car will run like a Ferarri that evening, but the battery'll be dead as a door nail the next morning.
grin.gif
 
Lesson learned: Always check with the BITOG forums before making any questionable automotive-related purchases. Hey, for $5 that was a lesson that could've easily cost more.
 
i work at a shop that does about a hundred batteries a week. we sell DieHard if that gives you a better clue where i work. we refuse to pop tops on batteries, and it will actually void the warrenty on the battery if we find that the tops have been taken off. even our Marine batteries are maintainence free.

i would suggest just keeping it on a float type charger like stated above.
 
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