Thank you, still useful in 2024. Still use the tablet daily. No good batteries left for sale, so I followed your video and now it's working with an external battery.

Thanks So Much !!! You brought my old Nexus 7 back to live in 2024. . I was trying without result, almost the same solution as yours but the key was the bridge betweek the ground cable and the connector to the USB cable.Now I a plan to place two 18650 batteries in parallel to make it more portable. Again Thanks a lot !!

7 years later still resurrecting old Nexuses around the globe :D Thank you Kevin!

very well done, I would not of attempted this with out your video. thank you very much! I'd like to ad a tip for someone else that trys this: To avoid using a dremel and making a huge hole. before soldering the wires pre-drill the back part of the case and run the USB cable thru first.

4 years late and this is still a really helpful video! For anyone coming after me, with a little bit of planning you can avoid cutting that giant hole in the tablet and just drill a small hole for the cable. Solder the wires after drilling the hole and running the cable.

Hello Sir. First of ALL thank you for this awesome video. I tried this on NExus 7 2012 1st gen and it WORK. Thank you a lot! :)

My N7 is still working in my car 7 years later thanks to this video. THANK YOU!!

Kevin you are DA MAN!!.. can't thank you enough for this.. i've dream this day since the first n7 came out.!

I was planning on doing this and have a BUC to do it.. Thanks for confirming it is working fine for me.

Thanks mate! Did this mod yesterday, installed in car today and works excellent. Goodbye to annoying inbuilt battery drain.

Dude....this tutorial worked perfectly for my N7(2013)with m.m. 6.0.1, along with timur's latest rom/kernal. Thank you very much! Btw...tried doing the same to my N7(2012)with the usbrom kernal. Also worked, with otg cable, however.... it didn't like to be in fixed installation mode, and kept on going into suspend mode screen every few seconds, for some odd reason. Anyway works great with the N7 2013!

The reason the Timur Kernal Sleep function is not working for some of you after this Battery Modification is because you need a Diode on the Red wire inside USB cable which attaches to the Ignition USB Adapter. My USB Ignition Adapter has led light on there (to see if it's on/off), so when I turn the ignition off, it should turn off, but it does not. That got me thinking why, the Nexus 7 is sending power down the Ignition USB cable even when it's in sleep leaving the Ignition USB Adapter on, even though the ignition is switched off, so the Nexus 7 would not know when the Igniton is off. A simple small Diode (available from Radio Shack/Maplins) soldered in-line the Red wire inside USB Ignition cable, the direction of the Diode needs to be like this: Nexus 7 -------- Red Wire [||diode] ------ USB Ignition Adapter, so the diode sends ignition signal up to the Nexus 7 but the diode will stop the power coming back down. This instantly fixed the issue, hope it helps the others

Guys this works great Kevin my issue was that I tested with a Samsung "mini" charger the regular white square ones, and it seems that the charger requires some kind of data confirmation from the phone / tablet before it sends voltage through the cable, tested with the car charger and everything worked perfect. Thanks a lot!

Thank you mate !! You are a rockstar! Highly grateful for this!

This was very helpful in my project to get a carplay tablet running in my car. I was able to do this with a Fire HD 8 plus 12 generation.

You sir are a genious thanks! Im about to perform an in dash install and was worried about heat killing the battery and reducing the utiity life of the tablet while mounted. will be doing this Before install. For all who are going to do this remember this swaps your nexus power from the regular battery top the car battery so the tablet must always have power if you want it to stay on and react to micro usb power on "Charging" signal so wire that usb cable to a constant 12v usb power adapter.

Hi! I made this mod on my Nexus7 2013 LTE CarPC. Thanks for your great how-to! The mod worked pretty well right away. But I would like to add some hints for others who want to take this attempt: -Remove the SIM card holder BEVORE opening the case! Otherwise high risk of damage! -As mentioned bevor, pre drill the cover and put thru the cable bevore soldering. Best spot is the area without any antena you can find on the opsite side of the Nexus logo. There is a molding mark like a circle. Drill abour 5mm below the center. -I cut away the little part of the pcb board of the battery which conects to the 3rd (middle) contact of the battery by mistake. The mod worked anyway. After removing of the battery itself there is anyway no conection this part of the board could route to. But I dont have a clue what this little thing does normally. -I tried the suggestion of another user, to solder a diode into the USB otg cable to bypass the suspend issue, I was also facing. It didnt work for me. I then used a adjustable step down converter. After some try and error I adjusted it to 4.8V. This gives a constant battery charge level of 75% and solved the suspend issue succesfully. Maybe this helps some other whos! My build: kzfaq.info/get/bejne/mpuWdq1lqLvRpZc.html Bye!

Hi, The best info that I have read was on Volt daddy (i found it on google) Probably the most informative info on batteries and this same that I have found.

Hey so I had the nexus wired up without the extra ground wire but it detects the battery and it drains it some how but when the tablet is restarted its back at 100%

Thank you from 2020.

Planning to do this in 2021 .. cheers

hello very nice companion guide i wanted to ask you if it was possible to do it to a nexus 7 2012 for a car project thank you

I have problem, during start my N7 turned off despite of direct line from bat, probably a super cap would do trick ?

i did this mod to my asus memo 7hd and it works fine and i had it in my 2010 crv..love it...the down side with asus memo is that the otg will not read your usb stick..other than that everythings works flawless, its been a month in my crv, i also hard wire the power button to an external so i can restart it. my next step is hard wire the volume to an external controlto control the volume up or down, still waitting for the volume button that i ordered from ebay. i hide my stock deck behide the tablet and had my head phone jack plug in my stock head unit aux..i will do a video when i get the volume button...cheers people.

Hi Kevin, Very informative and detailed video. I managed to get this done and it works. I have one question. Can the otg + charging y cable be connected to the usb port so that we can use it in a car dash install? Just wanted to know since the direct connection will already be supplying a constant source and then when you connect the otg + charging cable, that will be an additional source of power?. Thanks again for your help.

i tried on cheap tablet and worked. but i'm facing little problem. batterei control circuit is hot as hell when tablet screen on. circuit's cooling down when tablet on standby or on low brightness. did you try to touch battery control circuit?

Resolved my problem!!!

Didn't you plug your charger in at the end? Can it not run without both chargers?

Why do you leave there the thermal fuse at the + terminal? Is that necessary? I throw the rest of battery away (wit this fuse) :( and only got the circuit

Of all the Nexus 7 car install videos I've "researched" for my project, this one is my favorite (despite the fact that it's in portrait :). I take it there are ultimately two power feeds to the tablet, one directly to the motherboard via the battery leads that you converted/hacked, and the other via the OTG charging cable into the USB input. Just to confirm, the direct battery connection takes power from an 'always on' stepped down 5V connection to the car's battery whereas the OTG connection is connected to an 'ignition only' source and turns the unit on/off via Timur's kernel correct? So are you using two cigarette lighter adapters and does this mean that there is a constant (though slight) draw on the car's battery even while the unit is off? Do you have an idea how much of a draw it is and if the car battery could be compromised if the car isn't switched on for several days? Thanks again for taking the time to post this excellent tutorial.

Nice video. Next time can you shoot the video in landscape orientation and not in portrait orientation? It feels like we are looking through a slot or key hold.

hello! so if I connect cable from battery to charger in car which always have power it will take all power even when ignite on? OTG cable to charger is only for wake up device or then it power a tablet?

Nice and clear video! I'm considering this. One little question: doesn't this drain your car's battery when its parked for a longer period of time? (for example for a month). Do you have special precautions to prevent this?

thaaaannnnk youuuuuu!!!

You can attach this to a USB battery Pac and have a sub from the car charging that battery. you would need to either have a relay to control the power of the Nexus or you can have a separate switch.

Awesome. I've been looking for this for months. There are so many idiots on here. I don't understand the second black wire, I'm going to try it without that. I'm not putting it in a car tho. I set up a tablet as a photo frame in the kitchen and the battery has expanded and is ruining the screen. 👍

this is great been struggling for a while trying to keep or get better charge on the Nexus 7 2013 even with timurs mod it was still crap, this is the best thing, ive been thinking this is what needs to be done, but being no electronics genius i wouldn't know were to start, there is another thing i would love and its an external power button, can you do a video on this please, its been some journey to have a reliable in car tablet mod hopefully im at the end of the struggle. my main use is torque program.

Hi, rtl2832u no streaming, Rtl2832u drivers not installed when there is no battery please

Great and very helpful video ! Please tell me, are there any bad side effects or malfunctions as a result of external powet supply ?

Hi Kevin! Thanks for the awesome video. I have done the setup and the tablet is running fine. My model in Nexus 7 2012. The problem that I am facing is that I am unable to connect it to my pc as a usb device. I had planned to use the nexus as an extended display, and it requires USB connection and ADB. When I plug in the device to my pc, there are no sign of connection at all. Is there any workaround for this?

Hi how are u kevin i just tried this and the tablet worked and one normal and once you touche the screan for unlock its off pleas help

Awesome video Kevin! Solved one of my issues I've had with my Nexus 7 1st gen! I just completed this mod and now my only issue is when I turn on the car, I have to manually power on the N7. Since this is a fixed installation, I guess there isn't any way for it to automatically boot up when the car's power is applie (ACC/Cranking car?) I'd appreciate any insight when it comes to this situation if there's anything you can suggest. I'd like to avoid having to add an external power button. Any help is appreciated! Thank you for looking.

hello i have a question regarding this mod. are you constantly drawing power from the battery? if its only feed power when ignition is on how dose the tablet fair when the power is cut? .i.e turning the ignition off

what app do you used to chek the battery?

I really like your soldering iron would you let me know what brand and the model number? please. Great video by the way when I seen this I had to try it on an old 7 in. nextbook tablet. But the wires coming off the plug were a bit different it has 5 wires two red on one side one white in middle and two black on other side and I soldered the red and black wires from a usb cord with the ground jumper wire just the same as you done I plugged it in and to my surprise it works like it should.

INCREDIBLLE !!! please help me lord of the nexus lol i do have a nexus 7 (2012) it is currently in my car as replacement of the original crappy computer, anyway lol i installed a switch ON/OFF near my lighter, so when you switch on the tab would launch itself and whenever i wanted to shutdown the tab i would use an app from android.. the switch is there to cut the tab from using the battery of my car as i do not use it during winter time ..do you think your system could work if it would work on a nexus 7 (2012) ?? please reply and great job

Great Mod...I have to give it a try! What soldering iron is that?

How it is going to standby mode when charger disconnected?

Hello can you help me with all Project for my bmw e 46? What rom i must use to make from a tablet a multimedia and navigation System?

I have few questions before i rip my Nexus 7. 1. If you disconnect the power supply from your altered battery site while the USB otg cable is still plugged and powered, does nexus immediately loses power or it still sustains from USB power? 2. Is the battery charging port and battery power delivery port same or different. I see tht battery is connected. Are there different wires for charging the battery and draining it ( in use state) in the connector which you ripped off (i see 2 black, red, orange, blue and green wires) Thanks. BY the way, great job.

Do u need power it on everytime manually

When u unplug is it turned off or sleep ?

Nice mod! Since the tablet is directly powered by a usb charger, does it mean every single time you turn off the car, the tablet shuts off instead of going to suspend mode (Timur kernel power management)? Or do you hardwire directly to your car? If yes, which fuse did you hardwire your tablet to? Thanks!

does the circut spoil if I use for more time cause the battery supplys 3.5 volts and the charger supplies 4.5 vollts

Great video tuto. Thanks a lot for that. I followed your instructions point by point with my Nexus 2013 but at the end when I put the tablet on power (5Volt) the logo Google appeared on the screen for a vey short second disappearing immediately, then reappeared a few second later, disappearing once more and so and so. Any idea ?

Great Video! I am thinking about trying this out myself when I mount this into my car's dash. Does this work powering from ACC? I am using tasker right now to turn on/off the display when any power is connected/disconnected.

But.. I know nothing of the grounding of that one line. Kudos, and thanks!

With the battery management board still hooked up, do you still get temperature warnings and shutdowns on hot days, or does the extra ground wire somehow bypass this? I had done the same mod to my battery (without the extra ground wire) and it works, but I still get temp warnings on hot days.

Isn't the battery 3,7v? Doesn't it damage the circuits if you connect the battery terminals to 5v? Thanks!

How Did You Set The Tablet To Sleep/Standby When The "Charger Is Removed"

Tried the same mod on Asus fonepad 7 me372cg or k00e. But my mistake while removing circuits from battery I didn't removed the circuit to which battery terminal are attached I just removed the battery protection circuit and applied this procedure on on tht circuit strip, on tht circuit I had supplied 4.48v and connected through 5.2 volt in the charging port when power is supplied from both the places, tablet vibrates and battery charging symbol comes and after pressing the power button tablet starts some time with 100 percent battery some time 56 percent some time 62 percent but problem is as I start using apps namely Google maps or chrome tab shutdowns. Any solution, plz help.

Why do you need the ground jumper wire any way?

Is that possible to work on samsung tab 3?

This is a very cool idea but if I wanted to hook a cord into the bottom of the tablets original port to my PC and sync music from my PC media library to the tablet will that still work the same as before the rewire.

Not working for me :( Turn off automatic boot menü coming always. Any solutions ?

Was is not easier to just wire the part you removed from the battery to the usb charging port? So removing battery and direct power from usb port? Any specific reason not to power it through usb port?

nice job, do you still need to use the power button to turn it on? or it will turn on automatically? thanks

Hi Kevin, I preformed this MOD. works good, only problem is I cannot get the tablet to go into suspended mode with Timur's rom after the procedure, I'm sending it 5v, I think it might be too much power, can you please advise what you did to get yours to work.

Hey man, very nice guide. I followed it with 100% success and Im proud of myself. But I have problem wen connecting usb otg with USB Hub(4 ports), It does not work anymore. I can only connect one device to the OTG y cable but not a usb hub. Any suggestion why? Thanks.

this is interesting. so you can hook up 5v directly to your devices battery terminal? Is this limited to specific devices or will the same principle generally work on most devices such as tablets/smartphones?

Hi Kevin. So I've done this mod and the tablet powers on. I've also got Timurs USB rom loaded. My current issue is when I remove power at it to enter sleep, it will go off but immediately turn back on. Power event manager sees otg even though power is off. Only way to stop power event manager from seeing otg it to unplug otg from tablet, then it enters sleep mode again and clearly doesn't turn back on. If I plug otg back in after this, it stays off. Any help? I've tried 2 different otg cables. Tablet is wired to car battery with regulator and inline fuse.

will my otg still work mounting usb sticks stuff like that if I do this... can it work on standard kernel... no messing about just hardwiring the tablet and use the otg

Can you describe the steps you used to make your nexus 7 not turn off or what kind of hacks or tweaks you have installed

Hey Kevin do you have a guide on how to do this on a 2012 Nexus 7, is it a similar process?

after the procedure my N7 2012 keeps starting with the "Google Logo" and then the Logo disappears, but display ist still powered on. But it won't start normally into Android. Any Solutions?

Hey there, I've watched your video here & was wondering if you shed some insight on some thoughts and theories I have dealing with a very similar thing. I have a project that I want to do with an install of a tablet (specifically the "nvidia shield k1" tablet) into my car dash. I'm debating if I want to keep the tablet battery connected or if I want to convert that tablet in a way so that I can run it solely off of the usb connection/charger. I don't have much experience with such a thing (not much wiring, just some basic stuff). now I've seen how to run tablets and phones on usb cables(which I figured was possibly as I have done simple wiring like this for mini fans etc) just by simply; 1) splicing the cable, 2) snipping off the green & white data wires 3) snipping the battery off it's wires OR unsoldring the battery & wires from the board. 4) attaching the remaining snipped red & black battery wires to the red & black (+/-) wires of the usb charging cable... or soldering the usb wires directing to the board in place of the originals. or in this case like your video keeping and using the top piece of the battery(like as required for that specific tab). That method looks like it seems to work (not sure if always on all tabs & phones). But I was wondering if the battery could be snipped from the wires but the wires(+/-) be left connected to the board. then, 1) splice into a high speed usb charging cable(center just a hole) & snip the green & white data wires. (so that the cable will specifically charge only) & wrap it back up keeping both male & female/A/B ends intact. 2) take those still connected to the motherboard power wires that the battery was connected to(possibly have to be extended in length a little) & attach them directly to the usb port on the device?. (would this then create a closed connections/full circle/like an alternator?). 3) this way when the usb charger is plugged into both a usb 5v power supply and to the tablet, the tablet would then get the power needed to run/operate solely off of the usb charger cable only, without a battery but with a nice clean connection (no exposed wires etc). This is all in theory of course ! lol but the tablet would then; A) run/operate on a usb power when connected to a usb changing cable. (and would power on and/or off only when the car/5v power source is turned on and/or off.) B) The tablet would also have a very clean/nice connection to the power via USB port on the device. C) The tablet would be closed back up (backing/cover replaced) and you wouldn't even know there was any modifications made to it or that there isn't a battery inside other than a maybe possible change in weight. D) for an removable style install, the tablet can be easier removed and inserted back in and out of the vehicle with ease and not have to worry about wrapping a dangling cord around the tablet when you take it out of the car. E) if desired, the tablet could also be left inside the car(if you didn't want to carry it with you all the time) and there wouldn't be any need/cause for worry/concerns etc of the tablets lithium battery being damaged/ruined/overheated/exploding/imploding or causing a fire do to overheating in a car oven on a hot summer day. and if any worries at all you could just simply disconnect the usb power from the device and still leave it in the car with no further worries. Have you ever done this before(I mean the wiring/connections portion using the usb port itself to actually run a tablet) ? And do you know if this could work ? or is it even possible ?. Thanks in advance for you reply/response

Will the same procedure apply to asus memo pad 7? Does micro usb work after this transaction do data-driven shopping? Thank you

I need help I don't understand It works fine for five minutes and powers off and if I reboot it it powers off after 5 minutes please help

If I plug in the charger will it charge or just make the tablet think it's charging

Nice bid bro.....not the usual "hi guys, blah blah fucking blahhhhh!!!!.....well done mate. IMA save this and have a go when my battery dies. Keep on !

After performing the operation, the tablet turns on but after a minute it turns off. What could it be due to?

Kevin, with this mod is it possible to connect the n7 to the computer?

Hey i did this method on my amazon fire tablet and it worked. But it has one major problem, when powered on tablet works perfectly fine but after few minutes it starts heating tremendously and then shutdown because of overheating. I have notice only a small area gets heated not cpu and not the battery pcb. Can you help me why its overheating?

Did you wire the battery controller directly to an usb source?

Hi, I have got one problem, when I connect the OTG and charger it is always charging, also when disconnect energy, only stops charging when I disconnect OTG of the port.

So my question is, since you removed the battery how the hell can the tablet go into suspended sleep?

i love u

hello how long the vehicle battery provides power

Good work, I`tryed it iz ok

i did this and my dont turn on ?

if you want it more fancy and control your player with steering wheel here is one if your car come with steering wheel audio control, mine does not come with steering wheel cause its an LX model..i wish it does come with one.. www.rcjoycon.com/base_3/menu_10.php?com_board_basic=read_form&menu=10&com_board_idx=14

i try this but bootloop on Google logo. 😰 please help me

Hey Kevin can take a quick look at your forum n7carputer.freeforums.net/thread/3/battery-mod?page=3&scrollTo=150 Thanks for sharing us this modification :)

nic3 diy... only if there was a way to get rid of "holding power button" everytime you turn on the ignition key!!

you dont talk much, do you? :D thx for the video!

i try this on a lg g pad f and i can see the lg logo and keeps booting over and over, noob needs help

Awesome video, planning to do this to my install and make an update video about it. Right now this is my current install kzfaq.info/get/bejne/n9SZdKaq0tjLg4k.html

Hi mate, just posted on your forum (n7carputer.freeforums.net/thread/3/battery-mod?page=2) Have you had any updates or heard of anyone who has fixed this issue with power not being detected through the microusb port?

Here is My video using this Mod in my lancer 2010 install if you guys want to see it! kzfaq.info/get/bejne/bZ2TaNuG2Z2lf3U.html Thanks again Kevin!

Cool!