How to power a Macbook using a DC power supply!

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The difference between the cheap and expensive unit is mostly in the USB connection & the software. The ability to control the power supply from the computer and view amperage/voltage is pretty useless unless you intend to use it for livestreaming with open broadcaster and want results to show up on the screen. For most you will want the cheaper version.
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👉 Learn something? Leave a tip!

[@novakordz3928]

Dude ...First of all in 10 years I have not found a person who explains beautifully something factual on youtube and willing to share correct knowledge, it means you ooze confidence and know way more than your presenting here...plus the amount of recycling benefit world wide you bring is massive , the subscribers is awesome , the views on this video way under estimates what your helping us all to achieve. Wonderful Brother thanks for sharing mate your a legend.

[@alabrrmrbmmr]

So true, so true

[@DrMeize]

wow...I don't know how you can teach this things that are very valuable ?! I am not a tehnician by far...I am not doing this stuff to earn money , in fact the only thing I watch your videos is because I like the way you speak ...but man , this king of small things makes a difference in some services stores where most of them are only entering this beautifull world of repairing stuff :) good work tho' and keep posting vids :)

[@Kallaste.]

Wow, this video is the best! You are an expert in what you do AND you are fun to listen to. What a great channel and a great guy.

[@homersimpson9257]

Great Louis ! I’ve learnt exactly what i wanted to know. Thank you

[@thatradkid]

really awesome video camera control! and good content. btw if you flip your side cutters so the flat side is out you can strip wires 1st try every try

[@alejandrinos]

The way you switch seamlessly from the main camera to overhead and microscope is really cool. No matter what you say, your videos look professional as fuck.

[@rossmanngroup]

Thank you

[@dailylegend]

Thank you so much for this video!

[@rotor676]

Thanks for the vids. Your an awesome instructor.

[@incelstate2466]

Thanks for this video!

[@thomasm5273]

louis is really a master of his craft

[@meemo4556]

Andron MacBeton what do you mean

[@joshuanorris5860]

@@meemo4556 r u dumb He means that he knows his shit! Duh.

[@andypalm7061]

Valuable info! Thanks.

[@kevinkleine5116]

thanks for sharing this great info

[@MrRaebild]

That's what I love about your videos Louis .. the more I see, the more I figure out how little I know :) .. I love it .. there is noting more irritating then watching af video and learn notting :)

[@SlaveToMyStomach]

Almost 5 years since video was posted and yet I still learned something.

[@tanveerakber948]

thanks bro first time you explain me very easy .. keep it up

[@p_mouse8676]

@ Louis Rossmann So basically you can convert a regular 19V power supply (let's say a Meanwell or something). Replace the standard cord and connector by a Apple connector and you just got yourself a very cheap adapter for your Mac? For the pros/more advanced people here, you could probably add some extra circuitry to make sure it never overloads (although, in my experience this is normally already implemented) and drop de voltage a 0.5-1V (mostly a diode would do just fine lol)

[@ZaiFuchigami]

Could I make a macbook "charger" with a simple LTC3780 CC CV board? I'll just limit the current to 3A and set the voltage to 14.8V (I have a Macbook Air Early 2014)?

[@zacharytaylor8523]

Here is an idea, snip the charger cable from dead chargers add some banana jacks at the end and now you can sell DC power adapters for macs at the store

[@jonny777bike]

I imagine that your DC power supply also has current limiting so it will CC when you have over current instead of blowing more fuses or parts. Also if the power supply is programmable you just recall that voltage setting.

[@louisslouiss8326]

Finally... Thanks @louis !

[@pr0xZen]

How do you adjust the PSU and tell if it's negotiating (or trying to) full voltage, or stuck in 12/5V etc? Do you always set the PSU to the full (16.5-19V) voltage, and then measure on the board by multimeter?

[@VovanCBR]

thanks dude for this video

[@philabrahams383]

Another great video.

[@trick4you101]

thank you so much ...... very useful information.......keep it up

[@javidbenam5400]

Thank you for sharing great subjects about mac. I was wondering if it is possible to bridge the smrt circuit in dc power supply system and connect the Mac directly to a power supply without using the Magsafe connector ? I know that this might not be a smart question to ask, but maybe worth thinking of.

[@vanhetgoor]

I never knew this before, thanks you told us.

[@domzzz1244]

Thanks Louis !

[@Killerspieler0815]

Louis is the master who prevents us from falling to Apple iRippoff

[@tav48]

I have two questions regarding magsafe 1 macbooks / cables / powerbricks 1) If I use a cable from a 60W power brick, do I need to power it with 16.5V or can I also use 18.5v? 2) is 18.5v the upper limit for macbook pro's from 2012 or will they take 20v ? Thanks

[@ashleesmith3988]

thanks... great advice

[@ababab678]

appreciate it man.

[@zapallalla]

You can see all that data (and more) from iStat Menus. I've had few macbooks in heavy use and I haven't blown a single charger. The lead gets broken after few years, yes. That's because of mechanical wear but I think that's totally normal thinking how much bending those takes in years.

[@maxlaval4419]

Thanks Louis

[@Charliendt]

Hi Louis! Thanks for sharing this information. Could you also please add a note with the current or voltage limits that you use so you don't blow the things up? I know from your videos that when you are testing shorts you are very aware to not to blow the CPU with to much power but I was wondering if you do the same with the Macbooks.... Also I think it would be a nice discussion to check whether or not this is possible with the new Macbooks that use USB type C to charge up. Again thanks for sharing and happy new year Carlos

[@ENIGMALABSSOLARGURU]

hi... louis i have a macbook pro 2011 i have replaced the batteries serval times. how can i bypass the battery and use just charger to operate it.

[@user-nm6oy2fc9t]

I’m using MacBook Pro 15” 2015 without battery. I turned it on like you said. Oh it works! Very good video! Thank you so much! But does it damage computer? Or we only use it for emergency?

[@crazyirishman121]

Im enojying the better camera angles. Nice work :)

[@rafextreme2879]

Is there a way to bypass the magsafe connector in total like either connecting the 2 possitives together and the 2 negatives to a power brick ignoring the middle wire? or converting the connector to a different type like a dc jack? Asking because i got handed a mbp and would like to see it turn on before i invest in it

[@iDano98]

Can we do a similar thing with a typeC macook forcing the 20v without the typeC controller talking to the charger? I think this will break the computer but i don't know

[@andrewklug4845]

Hey Louis, now that Apple has finally come out with US-C cables that plug into their 140 W bricks ... can you recommend an appropriate third party power supply with a USB-C port that would not require cutting the cable? Keep up the great work.

[@cheeriomartinez]

...so what if we don't have a huge power supply thing like you do? What should we use? Plug it in straight to the wall?

[@tomorrowland8745]

can u tell me ? Can i power on mac book 1181 Black from the battery conector without Mac safe charger and if YES how to do that ? Thanks

[@giandenorte]

good video! I am wondering if I can power up my matebook 13 using dc power supply. ( I bought it as defective, without charger and battery and other parts.) the charger port is usb type C. will it still work without the battery. I am planning to use it just like computer.plug and play... thanks

[@RaggaDruida]

I really, really want to know your opinion on the new Thinkpad lineup they announced for CES... Specially the changes they did to the X2x0 (X270 to S208) line...

[@jlan123]

What did they do?

[@RaggaDruida]

Soldered on ram, non removable battery, with half the capacity, no Ethernet port...

[@kerbsidemotors9249]

Disposable

[@MrKillswitch88]

Not worth the money, time, and are frankly mac like cancer which is really sad given how good thinkpads were in the past.

[@joblessalex]

Do you need a chip? I have an older powerbook g4 and straight in voltage just won't give me more than .2A....

[@Spanto21]

Dear Mr. Rossmann, i'm a big fan (and i don't even know why LoL) even if i'm not at all into mac repair hehehehe. I have a simple question that you have probably talked about before (but i cannot find it). Can/should we use our MacBook Pro plugged in or not ? I really appreciate your answer. Thank you very very much !!

[@maqabyah2]

Great vid, just leaned a lot

[@johncoops6897]

Stop leaning... you might fall over.

[@darinpesnell7712]

I want to charge while out in the field using LiPo batteries. If I use the 60w, is there any concern with plugging into a 4s (16.8v) battery?

[@jkyoft78]

I would like to charge my MacBook pro from my 12V battery in my RV. What do you suggest? I want to avoid installing a DC to AC inverter on my 12V battery and then plugging in my Safemage 2 into it - I don't want to convert from DC to AC to DC. So the MacBook expects 20V (4.25a) DC, but my battery is only 12V. What can you suggest?

[@udontknowus2]

Is the Magsafe 2 Tipp telling the macbook the wattage of the charger like magsafe 1 tipps?

[@ivanvelez7668]

hi, I have question. Can I power up and use my macbook pro without the battery connected to the logic boaed?

[@Sparky400]

why are you setting the power supply to 18.5v instead of 16v? doesn't the genuine apple 65 watt charger start at 16v then go up to 18.5v on high power draw? can an air cope with 18.5v? i noticed kits to replace the frayed cable on a macbook charger (they are easy to open. I noticed the are all 85 watt ID. what happens when you put an 85 watt ID on a 45/60 watt brick? i know a 15" macbook will run fine off a 60 watt(i guess 45 too) normal charger just charge slowly but what happens if its a 15" macbook with a 45/60 watt brick and 85 watt ID. will it freak out when it can't get the power its expecting?

[@karlmcdonnell5838]

The fact you wrap cables properly pleases me

[@DavidJohnson7738]

can you modify the circuit in the tip to allow you to use ANY tip and have it report as an 85W charger?

[@uN1Qu3DZ]

Likely yes, but cutting into that metal body to modify it and having it still usable at the end is going to be difficult.

[@debug9424]

+David According to this article (link below), the chip inside is a DS2413 "1-Wire Dual Channel Addressable Switch". It can't be rewritten (lasered ROM), but can easily be spoofed with MCU (Arduino, ATINY85, etc). www[dot]righto[dot]com/2013/06/[remove this text]teardown-and-exploration-of-magsafe[dot]html?m=1

[@steveholvoet6058]

So, if I can get a 85w magsafe cable and a magsafe to magsafe2 adapter, it'll work for any mb, right?

[@kalp0rter]

Yes

[@TEDOBEATS]

Is there a way to cut the cable and place a dc plug on the and so I can put into a battery pack? Or a way to go into a powerbank usb-c to be mobile ? Sorry for my bad English

[@dumbbellenjoyer]

Will you ever write a list of diagnostics commonly found via the amps shown?

[@jonasczech7237]

wiki2.rossmanngroup.com > "troubleshooting guides"

[@03269696]

hi man thanks for this video,. i have a question can i remove the battery and use the laptop only with the power supply? my battery condition is Replace now and i am looking of a way to charge my mack book pro 2012 without the battery i hope u can answer me man. thanks

[@3DSurfacing]

I use the same keyboard in Sydney Australia. :)

[@juweinert]

7:45 Maybe someone can help me here. I have a 15" MBP from 2015 wich does not boot without the battery installed (just as you said, Louis). But I ONLY own genuine 85W Apple AC adapters. It almost fully boots and then turns off again...

[@GameTL]

Question: can I use 85W 18.5V from a DC power supply to a MacBook 13inch that can only handles 65W, it will just limit the current, because the 65W power supply made for the MacBook 13 inch is 16.5V.

[@maryjanecosmiano6874]

hi sir huge fan of yours maybe you can help me.. i have a working a1342 board with a bad lcd and def hdd is there a way that i can turn this into an all in one pc using just the board

[@rocktime73]

is it possible to use a battery charger for pc on a macbook? obviously replacing the cable

[@MartinAmbre]

can u use the magsafe 2 cable to add USB header and use it with power bank

[@robinmordasiewicz]

Maybe off-topic, but I'm trying to figure out how to power my 15" USB-C Macbook pro from a DC battery pack. Most portable USB-C 3amp chargers are not powerful enough to charge and power the laptop at the same time. Do you have any recommendations for DC battery banks that can charge and power my laptop for a day ?

[@RiffLords]

Thanks Boss!!

[@peterrutter7332]

Hi great vid can you tell me if i can make a lead like this to power and charge a macbook air at 12v from a car ??

[@harryhall4001]

Macbook airs run on 14.85V (or atleast mine does) so you would need something like a boost coverter to increase the voltage. Another issue is that car power is often fluctuates and is noisy due to the electrical components in a car such as the altenator, this is especially bad when starting the car. You would need something to filter the power coming from the car.

[@MartinAmbre]

Louis Thanks for the detailed info. I just researched a little harder and found your video. Can you suggest can we convert old Magsafe 2 cables to power through Power Banks and what do I have to note ?

[@rafextreme2879]

Match the power output of the original charger (he says it in the vid)

[@jayontherock]

please mention how much Amp. to set before attaching a cable to motherboard. 16V and____ Amp..?

[@alsadler4013]

Louis, I just came across your video and am interested in powering my MacBook with 12v while using it on my boat. Looking at my 85W power charger it states it's output is either 18.5 or 16.5v. Will my 12v be enough power for the MacBook Pro?

[@harryhall4001]

The battery on a macbook pro needs more than 12V to charge. You could use a dc-dc boost converter to increase the voltage. You might also have to worry about filtering the power from the boat to make sure it is free of ripples/noise as the boost converter may not remove all of it, and it could interfere with or even damage the macbook pro.

[@B.E.H.]

AMAZING!!! The best channel about "Macs" repair, congrats!!! : ) I bought one flux in your website, waiting arrive. Have some link when to buy MagSafe 1 and 2 both 85w ORIGINAL, please? THANKS!!!

[@hectordenicola]

I have a Lenovo T490 laptop that has a 65W adapter with a USB-C connector. I would like to use this adapter with my Macbook Air Retina 12" (2017). Is there any risk in doing this? I have actually connected it and it works fine. But I'd like to know if there might be any risk in the long term if I continue using it. Thanks!

[@rigo6156]

Is it possible to remove a battery from a late 2016 15" MacBook Pro battery and charge it?

[@kaalipeeliproductions]

Can I do something so that my MacBook air runs at its base clock speed without the battery ?

[@blondegaijin]

Your Tekpower TP3005T is plugged in. Stupid question but if I'm road warrior'ing with my MacBook then can I used this to power my Macbook 13-in 60W after I MacGuevor the tip connector per the video instructions..? If so, as long as I'm just accessing web data with a dim screen how long use might I expect (verrrry ballpark)...? Thanks! ^_^

[@simondsouza549]

I have old macbook 2008. It dont have battery and there was problem with keyboard also .i have charger but it not switching on with the charger and solution

[@user-fk5ug5wh5c]

Ah yes, the right Video this time.

[@ChristianGrytten]

THANK YOU, i swapped my DC cable, and it said 60w NO WONDER IT CHARGES SLOW!

[@adrianTNT]

Anyone knows if it works to connect an "USB to Magsafe 2" cable (I seen one for sale) to a ~65W usb c charger and charge the MacBook air that way ?

[@madhvikumari2048]

Hello my friend. I have the same macbook. My battery was swollen and I removed it myself. Now on power cable support it is not going to turn on without battery. What to do, I have followed every techniques from nvram reset to holding down the power button for too long, but nothing worked. Please suggest me any option do that I can start my macbook without battery.

[@DNMEBOY]

Is it possible to power it without the plug from the power supply? I scored an A1502 today without a power supply. The cover wasn’t screwed in so I’m not hopeful that it works and don’t want to buy an official power supply.

[@eljardincitorecords7787]

You Chanel blow my mind dude! Is it advisable to use a toshiba notebook adapter (19V 4.75amps 90w) on a macbook pro late 2013 15inch?

[@alexmacdiver]

Thank You

[@overexposurevideo]

Such a good one this, I just build a car charger and a normal one out of two old chargers :-) thnx a lot , 12 volt is fine btw

[@uyijohn6072]

i want to buy a dc power supply please which do u recommend,i don't do videos

[@joelstarkman1019]

Wondering if it’s possible to connect the MagSafe power cord to a 12VDC boat system. Has anybody tried that, or do I need to use the onboard inverter, generating 120VAC and plug in the Mac power block?

[@carlosportela9233]

Hi Louis, can I connect to a 12v car battery using the same approach to charge and operate a MacBook Pro 16?

[@executive]

How do I test an Apple power supply to see if it's working (without a working macbook handy) ?

[@ranirupeiris]

can i use this methord to type c charger ? please answer

[@zohaibkushwaha2451]

Dear Sir I am having some issue with my Macbook Pro 2015 mid the issue is that whenever i unplug the power cord from the machine its turn off (it doesn't not turn on without megsafe power adaptor) even tho its showing 100% battery when i unplug the charger its don't turn off instantly but after 1 to 3 mints some times after 5 mints but after that time it's turn on and does not turn on till i re plugin in the charger. And i also think my charger is non genuine because i have been using this machine from one month its was good and also battery timing was good but i didn't turn it on for one week but after that one week i tired to turn it on it start showing this red error on screen to re plug in the charger after when i re plugin it turns on and show 100% battery even tho im system preferences the battery condition showing normal and also in coconut application showing normal conditions design capacity 56% health 80% like that ... Kindly help me.on this Matter i am waiting for your reply and one more thing i also tried smc so many time nothing happen Best regards Zohaib

[@domingohipulan7027]

Best of the best

[@BlackCat-qm3sj]

Hey Louis I'm making a project I'm making a cardboard case for my MacBook motherboard and I'm gonna make a case for the LCD too to make it portable again but I have the original battery but it won't work bc it's dangerous with cardboard so I was jw if u or any one knows anything on how to use it without the battery maybe I can use a 18650 battery idk can someone help me thanks

[@FourInTehMorning]

I'm thinking of buying Sygnett 60W USB-C PD power bank and would want to power my 2013 Macbook Air (magsafe2). Is there some special adapter need to buy to be able to charge my MBA from that power bank? Does anyone have experience with USB-C PD and older Macbooks?

[@waelelkholi3406]

will the same technique work for macbook 2018 with magsafe charger?

[@josevitorgomes7083]

A have a macbook type c to fix it here, there's how put in on a power suply?

[@kinsi55]

They made it so easy? Would've expected proprietary circuitry in the charger itself and not just the connector.

[@rossmanngroup]

Me too!

[@Ishiku__aka_xchoibitschibihil]

Louis Rossmann does no one ever think of the little green pinhole LED inside that connector? only Apple does this

[@betohfinger879]

thank u!

[@FMTFXE22]

Can a MacBook be charged off 12 volts like from a car or RV 12 volt systems?

[@daniurbinamusica]

Can I use the power supply with an MacBook Air without internal battery? Battery disconnected

[@baggins1]

I learned something