I am getting ready to add a cutoff to my battery. Pulled off the cover on my battery box and the box was almost full of water. I am going to pull the battery and drill some small holes in the bottom of the box which should drain any future water. Is there any reason not to drill drain holes in the battery box? ( on front of TT, Apex 249rbs )Seems they should come with drains. Can't figure how that much water got in. Maybe I did not get the lid down properly last time. It is stuffed under the cap and not easy to get to.

I have always drilled holes in my battery boxes. ...4 corners and one in the middle.

I drilled holes in mine and no more water. Pay attention to where you drill or the battery bottom may seal the holes. If the bottom has ridges, drill in the lower "trauffs", not the tops of the ridges where the battery will rest.I assumed my water was coming from wheel spray when it rained.Bill

While you are at it better check your fluids in the battery. This may be where the water came from. This could be the result of a failed battery...I too have drilled holes in the bottom of my my battery bank box...Roy Ken

I always drill some drain holes in the corners.

The only time I wouldn't drill drain holes is if the water was able to come in contact with something important and/or paint you had to be concerned about corrosion.A buddy ended up with some terrible damage to the side of his truck when it leaded out of his TC.

water in battery box | Good Sam Community

15 Replies

ScottG
Nomad
Apr 10, 2017
The only time I wouldn't drill drain holes is if the water was able to come in contact with something important and/or paint you had to be concerned about corrosion.
A buddy ended up with some terrible damage to the side of his truck when it leaded out of his TC.
colliehauler
Explorer III
Apr 10, 2017
I always drill some drain holes in the corners.
RoyB
Explorer III
Apr 10, 2017
While you are at it better check your fluids in the battery. This may be where the water came from. This could be the result of a failed battery...

I too have drilled holes in the bottom of my my battery bank box...

Roy Ken
Trackrig
Explorer II
Apr 10, 2017
I drilled holes in mine and no more water. Pay attention to where you drill or the battery bottom may seal the holes. If the bottom has ridges, drill in the lower "trauffs", not the tops of the ridges where the battery will rest.

I assumed my water was coming from wheel spray when it rained.

Bill
downtheroad
Explorer
Apr 10, 2017
I have always drilled holes in my battery boxes. ...4 corners and one in the middle.

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water in battery box

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