Dewalt battery packs

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Forum topic by MrRon posted 04-23-2015 06:14 PM 620 views 0 times favorited 4 replies Add to Favorites Watch
View MrRon's profile


3898 posts in 2666 days

04-23-2015 06:14 PM

The battery contacts in my my Dewalt 18 volt drill/driver get corroded so that there is intermittent contact causing the drill to run/stop/run over and over. Is there a way to clean those contacts inside the drill and at the battery contacts?

4 replies so far

View MrUnix's profile


4039 posts in 1622 days

#1 posted 04-23-2015 06:42 PM

Rubber eraser on the end of a pencil? Works for most contacts, but you have to be able to get to them. Some dielectric grease after cleaning might help with the corrosion problem. I used to have major corrosion problems on the batter packs in flashlights and the grease solved that problem.


-- Brad in FL - To be old and wise, you must first be young and stupid

View ralbuck's profile


1807 posts in 1689 days

#2 posted 04-23-2015 06:44 PM

Try to shape the eraser on a pencil to get in there with a little room to move back and forth.

Or a very fine tip on a Dremel type tool may also work for the clean-up.

How to prevent more corrosion is another problem. Maybe try storing in a drier place, if possible.

I live in Portland OR area—very humid winters and have had no problems that way; but our tools are all stored inside— not in a metal shed either.

If you are storing it in a metal toolbox try switching to a good quality plastic one for storage.

Others may have better ideas too. Hope this helps.

-- just rjR

View ClammyBallz's profile


298 posts in 559 days

#3 posted 04-23-2015 07:46 PM

Steal a nail file from your wife and use it clean off any of the corrosion on the contacts inside the drill. If you have any long q-tips, I like to use muratic acid to clean up contacts, dilute it down to 25%.
The battery cover comes off if you remove the torx screws, then push on the head of the terminals, it will be easier to get to the terminals that way. If you use them in an dusty environment, I’d shy away from the dielectric grease, it will collect a lot of dirt.

View BroncoBrian's profile


435 posts in 1381 days

#4 posted 04-23-2015 11:19 PM

Nail file works great. Steel wool and a screw driver will work as well. Just scrape it up, it will connect again.

-- Bigfoot tries to take pictures of me

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