Randolph Acid Proof Battery Box Black Paint #345

Select Size:
Add to Wishlist


Battery Box Black Paint is an asphaltic coating used to provide protection from battery acid in battery boxes and compartments. It is generally applied with a brush or roller to any metal area that may be exposed to leaking battery acid.

Shelf life: Guaranteed 2 years from date on manufacture in sealed container in protected storage.

Coverage: 225 square feet per gallon with one coat.

Mixing: Stir well before use.Thinning: Use out of the can. If thinning is necessary, thin five parts paint to one part 286 Nitrate Thinner.

Application: Apply with a brush. Three coats will provide the best possible protection to epoxy primed metal surfaces.


  • Frequently Purchased With
  • Customers Also Viewed


Easy to use and made my Golf Cart battery compartment like new.

Joseph N Verified Purchase


July 25, 2022

Coming from the Military as an Aircraft Metal Technician (Metal Tech as it was called) now retired, I knew about this product. But the only thing I would have liked to have known when I bought this paint for 38.50$ CAN what was the total shipping price added before finalizing the sale for a total of 93.36 CAN, 54.86$ extra! That was very expensive for a 38.50$ item. I was informed of the total of 93.36$ (since it was shipped from the US) later after the order was already processed. If I would have known the total price when the order was made, I might have cancelled the order. But its ok, I now have a very expensive good acid resistance paint. Yours truly Réal

Real B Verified Purchase


October 30, 2021

Larry H
January 1, 2018

The paint was easy to track down, and order. I received it very quickly. Thank You

Howard W
December 4, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is this product (Aircraft Finish) all that is needed to paint the battery compartment on a pickup? Or is an Epoxy primer needed? If so, do you have the primer?

An epoxy primer is recommended by the manufacturer. We offer epoxy primers from PTI Products, Poly Fiber, and Randolph. A search on our web site for epoxy primer will return the relevant results.

Q: Once the can has been opened, what is the shelf life?

The material has a 4 year shelf life. The customer must seal and store properly for full shelf life once opened.

Q: Three days later its still wet. How long does it take to dry?

Per Randolph: cold and damp will impede any coating from drying. You can give it a week to be safe but there is no guarantee. Using a little heat might be the best help.

Q: My RV battery box is constructed of galvanized sheet metal. Due to acid spills about a third of the galvanizing has been eaten away. Can this product be applied to a zinc primer?

The vendor recommends applying to an epoxy primed surface. It should work with zinc primer but it is not per the vendor recommendations.

View in Catalog

View Image View in Catalog