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V18 modification to accept V28 M28 batteries

Ekwoodard

Member
Joined
Jan 17, 2017
Messages
16
So I wanted a 1/4" Impact Driver for my 28v lineup which Milwaukee never offered.
I ordered 2 new V18 0881-20 Impact Drivers. On the bottom there is a black block with two offset tabs. If you notice there is one large centered tab on the 28v tools. You can order the 28v block from ereplacementparts for $4.??. I did order 2 but they did not arrive as fast as the impacts. Or you can take a pair of pliers and twist the 2 tabs off. You may have to sand them down a bit depending on the break. Now your battery will slide on but will not lock in place.
The 28v tools have a 1 1/8" notch for the batteries to lock in. The V18 has only a 5/16" notch. You don't want to completely grind this down as the battery won't lock in place. Marking over 7/16" from the edge of notch I made four pencil marks.

I used a dremel and starting just inside my mark and worked toward the notch. You do not have to completely remove this section. You have to create a small triangle for the battery to lock in. Look at the top of your 28v battery for reference.
To test the lock I slid the battery on and held down the release button on one side of the battery and pulled on the battery; held down the other release button. I then turned the battery around and repeated the process.
Next step was a motor test. I installed a full battery and zip tied the switch in the on position. The battery drained with no smoking. I then drove 7.9 3/4"x6" lags into two 4x4s. The .1 is one I over tightened and snapped the head off.
The 0881-20 is rated at 1400 ft lbs at 18v I am not sure how much the extra 10v increases that. It does have a variable speed trigger so I don't think I will have too many issues.
 

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86turbodsl

Well-known member
Joined
Jul 1, 2005
Messages
6,554
Location
Michigan
Wow, so this should work on any v18 tool then, making these old tools useful again! My batteries have been dead for years.

Sent from my SM-N910T using Tapatalk
 
Last edited:

Hammer1963

Well-known member
Joined
Jan 2, 2011
Messages
2,048
Location
Kentucky
Great work! I love seeing people doing things like this. Creativity, problem solving and good workmanship can just about fix anything.
 
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Ekwoodard

Member
Joined
Jan 17, 2017
Messages
16
So would the blocks mean no grinding whatsoever?

No, the blocks only change the alignment of the tabs you break off. The block is the black piece in the center of the base.

The battery I was using didn't slide off before I notched the base. Even one notch will hold the battery on, but I wanted to make it as secure as possible.
 
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Ekwoodard

Member
Joined
Jan 17, 2017
Messages
16
Wow, so this should work on any v18 tool then, making these ild tools useful again! My batteries have been dead for years.

Sent from my SM-N910T using Tapatalk

I also modified a V18 hatchet and it still works great 2 years later.

I have ran across a couple tools that were V18/V28. So my guess is that they're probably the same motors, switches, etc. But I have bothered to cross check parts.
 

OldNeons

Well-known member
Joined
Dec 27, 2011
Messages
462
Location
Midwest
digging up an old thread here - any one else experimented with M28 or M18 batteries on V18 tools? It's time for batteries and I'd sure like some extra power for the impacts.....
thanks
 
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