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Franken-Saw (a.k.a. how to use a DeWalt battery with a Bosch reciprocating saw)

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Picture of Franken-Saw (a.k.a. how to use a DeWalt battery with a Bosch reciprocating saw)
I discovered a Bosch 18v reciprocating saw sitting on top of someones trash can. It didn't have a battery, but that didn't deter me. I have several DeWalt 18v batteries for my drills and I knew there had to be a way to use them. So I brought it into my workshop and began playing.

I disassembled the saw and traced the wiring to figure out which terminal was positive and which was negative. Once I determined which was which, I ran some wire from the DeWalt battery to the saw terminals to make sure that it operated. It did. Now to make it usable.


Step 1: Materials

Picture of Materials
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Bosch 18v reciprocating saw, drill, or other tool
DeWalt 18v Battery
4 - female disconnect crimp-on connectors (16 AWG)
1 - 5 inch length electrical wire (16 AWG)
1 - zip-tie
 
Your 'ible highlights a frustrating need in the marketplace. That is, an interface that will allow battery A to be used with appliance B. Not every toolmaker has the best tool or "A' tool for a specific application. But who wants to have 4 different kinds of batteries with the attendant chargers? Either a universal adapter, or family of adapters would sell quite well I think.

Of course, a universal battery standard would be better. But, just like the phone companies were against phone number portability, the toolmakers will resist anything that makes it easier for someone to purchase from a competitor.
Hence, the need for adapters.
I totally agree with you burner. I have aquired a number of tools a La dumpster too, and have also let go some still good tools because the batteries cost more than it's worth. So why not challeng ourselves to make just such an adapter that looks respectable and works well too. first one to complete it gets a prize
I just came up with an idea but it might be too good to post here.
mikejs pfred23 years ago
I think I just had the same thought.
ironsmiter3 years ago
that's a great idea...
well, good idea.
um... Interesting idea.

Nono, Great idea, just a little "off" in execution".

"Let me ‘splain. No, there is too much. Let me sum up."

That's a great saw. I have one. Part of a set(c-saw, flashlight and drill in addition).

Even with the factory batteries though, after several years use, they get a bit loose in the battery department. you have a golden opportunity here, since you're going to a corded connector already. Use the full length of the cord, and keep the battery in a coat pocket, or tool belt! You have all the advantages of a battery operated saw(portable, no AC needed, etc.) but without the added weight of a few pounds of battery weighing down your tool while you hold it in awkward positions to do your cutting.


Now that I mention it... Maybe that dead battery and toasted charger I have from the second set, should become the foundation for a new remote-corded-battery setup!

GREAT idea! thanks.