![]() IF you do this carefully enough, then you can remove the shell upside down and see that the paper piece is well-aligned but doesn't yet touch the adhesive surface. Then place the inverted cup on top of the protruding end, and slowly slide the duct tape shell around the battery terminal part. It's easiest to do this on top of the battery, using the battery as the model. Fold its sides so that it forms an inverted cup on top of the protruding end of the battery terminal part. It shouldn't matter much but if you consider it a problem, you can eliminate it in this manner: cut a square of paper slightly larger than the protruding end of the battery terminal part. The problem is that the closed end has an exposed adhesive surface inside it. ![]() Remove the semi-open shell and finish it by cutting any small exposed adhesive surfaces (due to misalignment) from the bottom. Now you have a shell with one end open and one end closed. Cut a 50mm x 50mm duct tape square and cover the open end above the protruding terminal part with duct tape. Cut any exposed adhesive surfaces (due to misalignment) from the top. You will then have a battery with its protruding terminal part covered by a duct tape shell that's exactly the correct diameter to cover it. Then wrap the thing around itself around the protruding terminal part, in as good alignment as you can. You will have two opposing duct tape pieces attached to each other: Align it inverted on the duct tape roll and attach it to the end of the roll in as good alignment as you can. The duct tape must be 50mm wide so that its width is significantly larger than the length of the protruding terminal part.įirstly, cut one long length of duct tape. Then I made the decision to make the caps entirely out of duct tape and paper. I first explored the opportunity of using a toilet paper shell for this but the problem is that a shell is too large to stay on the terminals and to reduce it inner diameter, I would have to put lots of some soft material like foam inside it, and I didn't have any foam handy. How can I make a cap for Ryobi battery terminals? I also found on eBay a seller that sells such caps, but unfortunately the seller doesn't ship to Finland and the cost of 4 such caps, importing taxes, and shipping would cost so much that I'd much rather make my own. I found instructions for 3D-printing a cap but the problem is that I don't have access to a 3D printer. Installing and removing the cap should take less than 10 seconds.It must stay on the battery even if I point the protruding part down. ![]()
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