Milwaukee vs. Car , Can a drill battery jump start a car?

[@otm646]

I worked in automotive electronics design supplying multiple OEs. Any car in the last 20 years can take 18 volts. Plus you have to remember that the drill battery is trying to charge the lead acid battery, that current draw (really the internal resistance of the battery) is going to dramatically drop the output voltage of the drill battery. Nothing is actually going to see 18/20 volts.

[@zackglisan6400]

I’ve done this with a 12V drill battery and it worked

[@RoadsideRescue]

it surprised me!

[@danielbaze7134]

This is my go to trick at the junk yard. Hook up an impact battery to the cables to move electric seats or jump the seat motor directly

[@BigDaddysPlati]

This comes in handy when working with electric window too!

[@RoadsideRescue]

Nice!

[@benmitchell9170]

we need to support the homie so he can get his wifey a better car

[@ryans8309]

Right.

[@danh2134]

Nobody is stopping you from donating , just do it

[@aquaticasmr184]

@@danh2134 support is liking commenting sharing the video on your social media

[@danh2134]

@@aquaticasmr184 who's stopping you??

[@getatmeh629]

I recommend always connect your positive terminal first for safety. I enjoy your videos!!

[@orca984]

18v battery’s should work fine since the generator can sometimes spike at 16-18v

[@blackhole6828]

Yeah I've never had problems with an 18v battery. I've jumped my truck at least 5 times with a 18 v battery

[@iblanco1970]

@@blackhole6828 Really! Does not crash fuses or computer?

[@blackhole6828]

@@iblanco1970 I've never had problems but just expect anything I guess.

[@tth566]

This really is a case by case situation. The 18v battery will charge the car battery the moment it is connected to and due to the charging current it would be most likely dropped the voltage to the safety margin for the car. Yet, to be safe, don’t do it unless you are in a desperate situation. After all, car computer is not cheap! :)

[@toddlee7214]

Great tip, I wish we had someone in my area had your talent and was as trustworthy and honest as you, take care and hope you and your family stay safe.

[@63jeepj20]

An 18v would work for this. The alternator on most vehicles puts out around 14.5 volts, some are as much as 16v. The small voltage difference and short amount of time that it will be connected isnt going to harm anything.

[@ShitlordMcDoge]

Yup, a friend of mine used to start his Subaru with an M18 battery

[@Kaliburz]

Yup, I live under a rock, so I just discovered the adapter for M18s.... granted, I only got M18 tools last year...

[@oldretireddude]

I've always maintained that a normal car battery is only good for a couple of full dicharges before it is essentially ruined. Discharging one on purpose seems like poking the bear.

[@jared9026]

This video just saved the day. Glad I had a M12 battery and some spare wire laying around.

[@Turbo-smokey]

Nice move to get Milwaukee's attention, Now they have to sponsor you! XD

[@RoadsideRescue]

haha. hopefully! hahaha

[@Turbo-smokey]

@@RoadsideRescue You deserve it bro,

[@deifor]

Yeah, it doesn't work with a Dewalt battery lol

[@blackhole6828]

@@deifor 😂 right no shit.

[@jeristair]

Late to the comment party but I did it on a 2.7L diesel truck (Nissan TD27) with a dead flat battery left headlights on for most of the day, no clicking at all. Drained 3 18v batteries by connecting with wire and waiting for the wire to warm up disconnect, let the wire cool and repeat. And it started right up.

[@joemilton7552]

Pretty cool, definitely did not expect that to work. You could hook a few of them up in parallel and use bigger wire and get more starting power.

[@joemilton7552]

@@jruizsr voltage remains constant in parallel, you could hook up as many as you want in parallel and it would still be 12 volts

[@joemilton7552]

@@jruizsr Do you know what amperes are?

[@neutrodyne]

Vise Grips makes a good clamp to clamp the wire to the battery terminal.

[@texasproud3332]

Bro you are brave doing that to you’re wife’s car

[@RoadsideRescue]

Haha

[@loganbiddle5397]

Hooking 12v power up to a 12v car battery? Soo scary lmao 🤣

[@Spector_NS5_RD]

Why is he brave for doing that? 3 - 18650 Li-ion cells in series with a maximum charge of 12.6v is just fine for any vehicle that runs from a 12v lead acid. Amazing how 40 people thought this method to be dangerous.

[@n0diggityn0doubt81]

@@Spector_NS5_RD its a joke about wives.

[@iblanco1970]

@@loganbiddle5397 could be a 18 Volts battery?

[@jrgen9881]

audi laughs in 48volt

[@twistedwrench490]

Hey buddy you know I’m just messing around, on a real note hopefully all is well with the new baby and everyone in your lil family is happy and healthy take care love everything you post keep up the good work!

[@RoadsideRescue]

Thank you! :)

[@franklinfrankerson]

“Whatcha gonna do, when Hulkamania runs wild on you!”

[@RoadsideRescue]

Hahaha

[@7eis]

Curiosity is such a crucial component to learning

[@oobaka1967]

It's also killed more than a few cats.

[@mesanders1113]

@@oobaka1967 but did satisfaction bring them back?

[@Jirk4]

No problem at all starting a car with M18 battery too, I've done it many times, last time this Friday actually (4L V6). Battery was drained to 8 V, after hooking it up to M18 5Ah battery it jumped up to around 14 V and then it started right up. Even alternator is pushing more (about 14.8 V).

[@jesusmariarodriguezolivarr2477]

Jiri Pavlik. very good information. thanks.

[@joenesgoda5081]

I'm glad this worked for all of yall. My 4.3l killed not one, but two 18v 5.0s. My dumb ass figured since it wasn't but half charged and older that it might've been why the first one went, and didn't start the truck. The 2nd batt was fully charged, started the truck, and was super hot and neither 18v would charge ever again.

[@brendanleonard1375]

That's super cool! I didn't think it would work either!

[@kensimpson8133]

I have jump started my work van with a Dwalt battery. And it sure beats walking home, or waiting 45 mins for a jump.

[@Ottey447]

a humble mechanic indeed

[@vespamorelli7090]

Brilliant truck Ernest ! Never would have thought of that. Thanks a million 👍🏼👍🏼

[@ThingsTokeepBusy]

Yes I've done it many times with my 2005 Odyssey with the m18 never had any problems

[@iblanco1970]

Neither it’s computer? You don’t pull off car cables from battery?

[@oobaka1967]

Before I had a better understanding of electricity, I once plugged a 9 volt battery operated game into 120 volts from the wall. Every light the game had lit up for about 1/10th of a second and then never again :)

[@RA-dc5qp]

I used a heavy extension cord and put alligator clips on the ends. Never tried to jump a car battery but I made it up for troubleshooting. I has come in handy many times. Just food for thought.

[@MrConspark]

Alligator clamps and a bit heavier cables might help with the connections. Great idea 👌

[@2Jeezuzisreal]

Works great. I used a 18volt lithium that was low on voltage. According to the experts a 12-volt battery is actually being charged at over 14 volts.

[@AQUATICSLIVE]

Just use it to charge the battery over time if it's too low. I did it my DeWalt battery on super cold mornings leave it hooked up while I got ready for work. Just enough to give it some extra power for the below zero starts on the big truck.

[@MrFastFox666]

Never thought the little M12 could jump start the car. Also keep in mind that these batteries have protection circuits so if you try to draw too much current they shut off, that's why you couldn't start the car with just the M12

[@RoadsideRescue]

Good to know.

[@1bertski]

I got stuck with dead battery with no other choice. I used a 20 volt dewalt battery I had in a portable tire compressor. That I brought along. It worked fine and got us out of trouble. It was on only for a few seconds. Once the truck fired up I pulled out the leads.

[@haydenmccoy9476]

Im an electrical engineer, and looked this up honestly to see if it had been done before bc MAN this is incredibly dangerous in alot of scenarios 😂 definitely lucked out that you used a "barely" dead battery or rather one that wasnt super far under 12v, because leaving it connected gave it just that little boost maintaining voltage that got it started (meaning the m12 didnt have to produce a ton of current). If your car batt is super low and you dont give it a while to equalize with the m12, and you leave it connected while you crank - the car will quickly drain the vehicle battery to under 12v. Then (almost immediately after the key turn) the m12 will be the highest voltage source of a system that even on a small car draws a LOT of current (and i mean a LOT. Cold cranking amps even for a small batt is in the hundreds of amps) this instant draw is almost guaranteed to actually explode the lithium ion m12. Milwaukee uses cells that in the 4.0 have 2 parallel sets of 3 batteries, and maximum safe current draw for them is maybe 3.5 amps per set or 7 amps for the 4.0 w two banks. Anywhere over this can range from slightly decreasing battery life to full thermal runaway (battery boom boom with toxic shit) when youre drawing more than 10x rated current. So to anyone reading, LET THE M12 DISCHARGE AS MUCH AS POSSIBLE TO BE SAFE. Theres a reason car batteries are so fuckin big, but in the right conditions (like this guy did!) It can totally work. Also like others are saying 18v aint gonna kill it but be even more careful pls.

[@tonyblake642]

Been doing this for over 20years. It is a good idea to leave tool battery on for around 10sec then rest for 30sec several times to stop it overheating.

[@Masteringyourselfchannel]

It worked the first try, thanks!!!

[@jorgefuentesgonzalez1033]

I only have m18 tools and i started my 6.0 LS2 with it one day. Just make sure to use thicker gauge wire, that 14 and 16 will burn like nothing

[@mnight207]

Hey man. Quick question: How do I start my car without my battery? Or do I have to at least have a ground?

[@blackhole6828]

Idk my 18 v Milwaukee battery has never ruined anything on my truck. A friend does the same thing. We keep an extra battery with some wire in our trucks. But I'm sure it's true. Good video bud!!

[@adubs.]

This might be ok in an emergency situation but you gotta be careful with this. There's way more to batteries than just voltage. These cells don't have the kind of C rating for the current draw you could possibly have with a weak battery. Its going to begin current flow as soon as you connect it in parallel with the battery. This can and will ruin the lithium battery with the right conditions. There's also the matter of the alternator, which isn't setup to charge the lithium cells and can cause the protect circuit on the battery to essentially 'brick' your battery. Overall this is a generally bad idea.

[@albert-gazo]

I've done it on my Ram Promaster 1500 with a DeWalt 20v battery

[@michaelgordon3434]

Amazing content as usual!

[@RoadsideRescue]

Much appreciated!

[@bobbydixon9368]

It may have been if you had left the battery connected longer it may have built up a charge and started

[@gargamelgargamel6431]

Read the voltage on a battery charger with a jump start option. (Solid state) it puts out more than 12 by far

[@keikun6969original]

I did this on my 4.6 l V8 Ford f250 I used a Ryobi 18-volt 4 amp hour battery and was able to jump it off without having any issues, that same day I jumped off my father-in-law's Dodge ram 1500 with a 360 in it with the same battery. Worked like a charm

[@rawie995]

Work hard, work smart, be patient until success.....

[@sbyurt1]

What gauge wire did you use?

[@Taco-od2qc]

Mustache looks good btw no homo 😂

[@RoadsideRescue]

Thanks!

[@deifor]

It's the beginning of it, no judging though, it's your decision lol.

[@Crawlerjamie]

Skip to 4:05

[@andrecava6cc1]

WOWW thats a mustache!!!!!!!!!, lol respect the man, a man with mustache, you nailed it man, keep it up Mr....:D

[@KenTronico]

did you grow that stash over night? looks good, keep it all going.

[@RoadsideRescue]

Haha no. I just chopped everything else off. It all comes and goes.

[@RichardStefanits]

Be careful with that, you may kill the drill battery or cause other dangerous things when you kinda overload the drill battery. Usully there is a specific current limit for those cells in those battery packs. I would say it is about 40 amps for your m12 battery. Cold cranking amps for engines could be much more than that.

[@Fiterpilot]

I didn't expect a battery to be able to do that. Hope it doesn't kill the Milwaukee battery. Those are pricey!

[@RoadsideRescue]

Haha yeah. Me too. But I had to see if it worked.

[@joenesgoda5081]

It will. 18v 5.0. I killed two. On a 4.3l v6

[@AKLS]

Ah Milwaukee is too good! I was really on the fence about it working or not.

[@RoadsideRescue]

me too.

[@ownytony]

run two battery packs in parallel and maybe some thicker or more wires (the slot in the pack is wide enough for 2-3 of the wires you were using).

[@MrRubenAlonzo]

Good video, thanks Ernest.

[@RoadsideRescue]

Glad you enjoyed it

[@Jb_outdooradventures]

I'm getting an electronic start predator 212 engine for my mini bike do you thing this would work instead of a 12v scooter type battery

[@Bissonman]

You would need to connect the Milwaukee batteries in parallel. You would need 400 amps for the small cars. With bigger engines, you will need about 1000 amps. Maybe Milwaukee will give 20 batteries to try out?!? Great video...had me at the edge of my seat to if that worked. I would have used alligator clips

[@daringmotors]

This is a great tip for when you get in a tough spot! great video!

[@RoadsideRescue]

Thank you! And thanks for the comments!

[@dustintunis9347]

Even if the battery could put out the amperage to start the car, those wires can't handle the amps even for the short time it takes to start, or at least I highly doubt it.

[@JamesTatePa]

You need heavier wires to connect with. Those small wires will provide the 12 volts but will not provide the amperage needed to start the car. You will notice that the jump packs have short but heavy duty cables to connect to the battery. You could probably make a jump pack that worked with the M12 batteries. Getting a heavy connection to the battery would be critical.

[@JohnstonPettigrew]

exactly....this is DC.....connection needs to be tight and good.

[@kamilthegreat2834]

The portable jump packs use a 3 cell or better ones are 4 cell lipo batteries. Its basically like for rc cars. The power connection is short and thats why it gets away with like a 10awg wire. Those lipos have a high discharge rate. Usually minimum 50c packs. Meaning 50 times the capacity of the battery. So say its 10000mah battery that would be a 500amp short burst of.safe current. Amazing they are. I have one in the wifes car for emergency hooked with 8 awg wire to car audio ring terminals to an andeson connector. This way she just plugs the jump.pack to the anderson connection and its hard wired so its a bettery connection. Those little packs will for sure start an engine even her 3.5 v6 with the battery completely disconnected and multiple times.

[@v8consumption]

actually I believe the m18 has a few terminals and its a 20 volt battery but each terminal might be only a few cells so maybe less voltage. you just gotta find out which ones

[@12yearssober]

MacGyver would be proud

[@oobaka1967]

MacGyver wouldn't have been pleased that paperclips weren't used.

[@808pathfinder]

the 18v is a small amps, as long as you have a 12v car battery already hooked up it will be fine to boost

[@Jan3Sobieski5]

as far as i know, this would work with an 18v/20v battery too, it's more about the amps than voltage. worst case scenario, a fuse would burn but not at this low voltage. Now if you tried a 120v supply, that's a different matter.

[@simonsms410]

Old trick to start a tractor with bad engine is serial connection with two 12 V batteries. Works great, but can not be good for the starter.

[@JustMe-gx4xt]

It would help turning the lights OFF, AC, and other accessories when jump starting with such a small power source. Why would you leave the lights on when jumping? Also the wire connection must be solid like connected with a clamp.

[@rtidriver1210able]

What is that strap on the drivers seat?

[@RoadsideRescue]

its keeps the lap strap off of a pregnant belie. you run it under that hook.

[@danieltopham2260]

I have used m18 battery’s to start cars or even diesel trucks all the time works really well! Don’t recommend using 12 amp hour battery’s though because of the bigger cells!

[@TylerCox.]

Cold cranking amps brother

[@DrCanadianGamer]

I've jumpstarted a car with a dewalt 20v battery on the side of the road on a old car did the trick but would not recommend.

[@RoadsideRescue]

Haha. Yeah it scares me! Thanks for sharing!!

[@oobaka1967]

Old car means no computer to fry.

[@Mixwell1983]

I buy cheap 12v powerwheels online and mod them to work with my ridgid 4ah batteries using an inline fuse.. They haul ass with the 18v and the battery will run for about 30 mins. You have to be carefully with lithium ion to not fulltly discharge them though.

[@mattdehope7517]

Can use a 18v battery to start a car no problem. Have done it many times with a DeWalt 20v Max battery. Nominal voltage on a 18v pack is right around 17.5

[@ianitusluminous8937]

I've done it with an 18 volt 4 amp hour Ozito drill battery it's started a 2.4 L Toyota I wouldn't recommend it but it does work just don't leave it on for long periods of time

[@str8menace923]

Hahaha nice stash man!! You look so grown up

[@RoadsideRescue]

Thanks! haha

[@GreazyKnuxw]

I like the stache

[@RoadsideRescue]

Thank you

[@ignacioayala3804]

I always done it with my 20v delwat batterys lol

[@nop3noperson]

Careful using low voltage. The stater can be hurt actually

[@MoneyMarcMes]

I believe there is a fail safe in most modern cars and trucks where if you do have more the 16 volts going to the computer it may blow a fuse. So the fuse itself may save your computer from getting fried.

[@d26-i4b]

This could be the video that gains you a ton of subscribers

[@BigBlockCaprice]

I was thinking the same thing. Maybe a new catchy title

[@andrewmorey4195]

Interesting test, my guess is you couldn't jump the car just off M12 battery because the wire gauge being used. Not enough amps

[@MNCasaPro]

There's got to be a way to tune down the output of an M18 to 12 volts. That would be more worthwhile to have than the Milwaukee Top-off

[@mechsupernova]

Someone makes a jumper attachment for the M18, I never ordered it because I didn't trust 18v in a 12v system and I don't know if it reduces voltage or not.

[@brakesonthego]

Hey I was wondering how you quote your times on a job?

[@natevanlandingham1945]

Larger wires would supply more power and may help a bit more

[@45AMT]

Neat little trick if you get into a jamb.

[@RoadsideRescue]

:)

[@medicfour9268]

Those wires were too small to carry the amps with the battery disconnected, even if the battery could output it. Nice to know if the battery is just needing a bit of help to engage the starter.

[@Mike-vt6is]

You have to try some better wires and connection I run my winch off of a 3ah works great

[@cemtuncer6916]

12 v?

[@thalegacy6]

Shoot, I used the m18 and my lights were ridiculously bright. Switched back to the m12. No battery in the car for reference..

[@crazzywolfie]

why do you think some of those new boost packs can be made so small? they can do some pretty good things with those new lithium ion cells.

[@dentmastersofnymichael3316]

The factory car battery actually puts out about 14 volts and the m12 only puts out about barely 11 volts. The m18 also only puts out about 16 volts or so so they are not that far off from each other that is the m18 and the car battery that’s why the m18 works better but your right there is a chance you could fry something. I just use an 18 volt battery that doesn’t have full charge that gives about the correct voltage and will start a larger car or suv

[@fernandopereyra6992]

Is trhue so i d9n't know whqt volt 8s the charger?

[@fernandopereyra6992]

Is 12v bu5 5h3 amp?

[@MBZXZ]

can a m18 battery adapter to m12 drill eill it work?

[@RoadsideRescue]

I’m sure but at your own risk.

[@MBZXZ]

Roadside Rescue 🤣🤣🤣🤣

[@kkovler1]

Would not be messing around with batteries, use a jump pack or forget it. (a spark could blow up your battery, weak batteries taking a charge produce hydrogen ) not to mention it could weaken a on board computer or cause it to fail.Notice some comments on using higher voltage batteries (not 12v) is really looking for trouble.

[@Hopinmypony]

Im 17 years old and i one day hope to become a mobile mechanic😄🙏🏼

[@majorva2653]

i jump start my car pretty much daily twice with an m18 5.0 battery works like 15-20 times per charge xD

[@leedress2187]

I think if you left the drill battery connected for 5 minutes, you would be able to start the car without it. It would Put just enough juice in the car battery to be able to run the starter

[@cemtuncer6916]

yess 12 volt drain fistly 5 min after disconected probably ceanking its safetly

[@GumbootsOnBackwards]

I'm surprised... What voltage did the lead-acid in the car read before you hooked the Milwaukee to it?

[@RoadsideRescue]

dont know. i just killed it enough to not start.

[@bang2020]

Damn son, your wife drives a beater! Hopefully this starts making you money so you can buy her something nicer. Keep up the hard work bro! Love the videos

[@CarsandCoding]

Mechanics drive reliable cars. Talk to a tow truck driver and ask him what car he tows most often. Answer will always be BMW and Landrover

[@bang2020]

Cars and Coding you aren’t wrong there. I’d never own either of those hunks of shit.

[@michaelhartloff3833]

Ok it's good I seen the tab after I sliced it open with my knife

[@SakariNy]

I think the cables is the weakest link here.. shorter cables and solid connections would help.

[@rayg9067]

Thicker cables to push the current would help

[@SakariNy]

@@rayg9067 yes, that's the third thing that would help