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Old 11-14-2017, 09:34 AM   #1
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Default Milwaukee 12v liion battery maybe?

New to the rc world but I've read about some different batteries people use between nimh, lipo, and li-ion.
Who has used a li-ion battery before? I know it outside out a DC unlike nimh with AC.

I ask these because as a technician at a dealership I have tons of power tools and the one I'm looking at is a 12v 2ah Milwaukee M12 battery from my impact driver.

What if I made a connecter to have the car accept the m12 battery?

I've measured the voltage a little after use on my gun and it's reading 11.8 volts right now and I'm going to see about right after a charge.

As long as the car can handle a 3s lipo it should be right about the same voltage and it's the same current so I don't see any I'll effects of using my batteries from work.

Any thoughts or info I should take Into consideration before my project starts?
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Old 11-14-2017, 09:53 AM   #2
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Quote:
Originally Posted by pleirbag View Post
New to the rc world but I've read about some different batteries people use between nimh, lipo, and li-ion.
Who has used a li-ion battery before? I know it outside out a DC unlike nimh with AC.

I ask these because as a technician at a dealership I have tons of power tools and the one I'm looking at is a 12v 2ah Milwaukee M12 battery from my impact driver.

What if I made a connecter to have the car accept the m12 battery?

I've measured the voltage a little after use on my gun and it's reading 11.8 volts right now and I'm going to see about right after a charge.

As long as the car can handle a 3s lipo it should be right about the same voltage and it's the same current so I don't see any I'll effects of using my batteries from work.

Any thoughts or info I should take Into consideration before my project starts?
It would be interesting to see the size, shape and know the total charge.
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Old 11-14-2017, 10:10 AM   #3
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I would love to post pictures but the forum won't let me because I'm new. It's about 1.75" wide and tall by 3.5" long.
Much smaller than a soda can. You can look up Milwaukee M12 battery and find it.
It's 12v dc 2.0ah and 22wh.

Right after charge sitting on my box for 15 minutes it read in at 12.4v.
I'm going to run one dead and measure the voltage it's at.
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Old 11-14-2017, 10:30 AM   #4
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How do you plan to connect it to your ESC?
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Old 11-14-2017, 10:56 AM   #5
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I'm going to make my own jumper harness that connects from the battery to the existing harness
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Old 11-14-2017, 11:00 AM   #6
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my concern would be amp draw.
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Old 11-14-2017, 11:11 AM   #7
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I thought of that too but the motor is only going to pull as many amps as it needs and it being 2amps it's not alot compared to what others are using. And the discharge rate really depends on how much throttle I'm giving the unit so I'm not seeing anything power wise that should be a real concern compared to lipo batteries it seems like a safer set up with slightly lower voltage ampage and so on. I just want to see if anyone is using any li-ion batteries and what their thoughts are or if anyone has some knowledge on different specs to look for.
My battery charger actually puts out 3amps a hours so that's similar to a 3c rating correct?
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Old 11-14-2017, 11:14 AM   #8
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Why? Not sure how you will get connection that works that holds up to current unless you use more parts out of drill.
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Old 11-14-2017, 11:30 AM   #9
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2 amp draw???
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Old 11-14-2017, 12:29 PM   #10
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They are just 3 2000mah(2ah) a18650 cells in series.

Using them in an RC application is a good waste of a $40 battery
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Old 11-14-2017, 12:56 PM   #11
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This same experiment could be done with old laptop batteries.


I see Milwaukee have several different packs, but your biggest concern would be if the batteries have built in circuitry that checks what its connected to. Some packs do, some dont.

If your dead set on this, why not buy some 18650 holders on amazon and then order some 18650s? You would be accomplishing the same thing. 3s packs are so cheap on amazon, your going to end up spending twice to three times what a cheap pack costs.
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Old 11-14-2017, 02:13 PM   #12
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Which M12 is it? standard one is 1.5 A/hrs .. so 1500 mah. I don't think it's going to last you that long.
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Old 11-14-2017, 02:46 PM   #13
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What I find interesting is that I was wanting to switch to LiPo on my m18 fuel impact, but the stock battery lasts forever.

Times 10 the best tool I bought, and I can't believe how cheap they are if you buy them right and battery separately. It's more powerful than any pneumatic I've used. Must have good reduction gears or something

First time I took it to junkyard I nearly cried.

The tabs on the battery aren't meant time be attached to rc. If I had to use the battery I'd take the piece off the drill the battery plugs into and solder a connector on the wires that come off there
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