yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] Sharqi:
Thanks for the clarification it was really informative
[Nexus 4 General] goatgoatgoat:
Does anyone here know where I might be able to get a hold of a phone battery door? I imagine some people here would have broken their glass and just replaced the whole door. don't want to buy a mint condition door for over $100 when I am going to cut the back off anyway and solvent weld my 3d printed back extension onto it.
[Nexus 4 General] Richieboy67:
Interesting but defeats the purpose of having a thin phone.

I know everyone here seems to compassion about battery life but rarely am I away from a charger long enough where it is a concern.

I get a full days use from my stock rooted nex 4 and charge it at night. I don't usually do games though but I do listen to podcasts.

I think it is a trade off for a small sleek phone with a high res screen. They could put a bigger battery in bit it would be heavier and thicker and I really like the size. I could see some type of a small on back or something for emergencies but I would not want my phone twice as thick and heavy on a permanent basis..

Just my opinion:)

Sent from my shiny new(bought last Nov), scratch less Nexus 4!
[Nexus 4 General] shenery:
Well said my friend ;). Reason I did it was because. I like going big drives at the weekend. Using the sat nav to get there even plugged in to car charger would last till I got to the destination but that was it. So no sat nav for the way back and no photos of the beautiful places I go to in Scotland. Ripped my phone to shreds soldered big ass battery in. Problem solved ;)
[Nexus 4 General] goatgoatgoat:
I've PM'd you the STL file for the updated rear case design with camera lip.
[Nexus 4 General] ajlunis:
Is there any way you could just post it?
[Nexus 4 General] goatgoatgoat:
I intend to. However as I don't have a 3D printer to test it on I don't want to put it up publically until shenery has tested it out. I expect we may need to make a few changes to the design before it is perfect.

Rest assured - as soon as I know it prints okay and fits properly I will put it up.
[Nexus 4 General] shenery:
Hopefully not long now. Just waiting to hear about run times :)
[Nexus 4 General] noowb00:
I'm really looking forward to see the final design. Hope the glass back won't crack till then :P

Sent by my 'Mako Mori'
[Nexus 4 General] goatgoatgoat:
Excellent. Who are you printing with?

---------- Post added at 11:47 PM ---------- Previous post was at 11:36 PM ----------

Hopefully it turns out okay for a beta effort. ;)

Once I have done this I plan to make a car dock for it as my standard dock won't fit it once fattened up. I was thinking of pulling apart a qi charging mat and stealing the electronics and also ripping apart an old Nokia era car dock to steal the antenna coupler and mounting it all in a printed enclosure. I like having my phone in portrait orientation in the car as my primary use is calls and music (streamed using Bluetooth) and not navigation so I will likely just have an open top dock which the phone will slide into as this way I don't need any clips or catches to hold the phone in place. Just drop into the dock and pull up and out when done. But that is a whole other project :)
[Nexus 4 General] shenery:
Using a website in the UK. Not having much luck. They keep on giving me false hope. Take ages to give you a quote then go quiet! Hopefully get one printed soon
[Nexus 4 General] howard bamber:
Hi, I'd just like to say well done! You did a great job with the back. I had to read several times over how you made it - could not figure the faux carbon fibre, it's so neat. I love mods like this .

Why they could not of made a nexus Max is beyond me. I'm sure we would love twice the battery power for a few millimeters.

If I dropped mine I've an unused 400ma S2 extended battery that looks like it would do the job. I'd have to check the charger issues. :thumbup::beer:
[Nexus 4 General] blankit:
I'd love for a diy video on this.
[Nexus 4 General] goatgoatgoat:
I know some of these cut price providers are pretty dodgy. The only one I can wholeheartedly recommend is Shapeways. Make sure they print in ABS as I am unconvinced on the durability of PLA long term.

On a related note my N4 - barely three months out of the box - suffered a broken glass back today. I believe it was playing a game that overtaxed the GPU and caused it to run quite hot. There is now an unfortunate hairline crack running from near the stereo socket on a diagonal down. The phone hasn't been dropped and has been handled with kid gloves.

This is such a terrible idea on the part of LG and Google. A plain plastic (or even Kevlar like the earlier Moto phones) back would have been far more durable. It is very disappointing that Google has gone in the apple direction and used cheap glass laminate on the back. I won't even start on the lack of a microSD and non removable battery.

I almost feel like lodging a complaint with our consumer protection agency as this is clearly a defect.
[Nexus 4 General] shenery:
Aw nightmare mate. Least you'll feel better about doing the mod now. When my glass back broke every time I dropped it another cracked happened on it. Speaking with a guy now that's doing it pretty cheap for me but he's machine is broken at the moment. He says he will give me money off for the inconvenience too. So fingers crossed I'll have it soon and can get some pictures up!
[Nexus 4 General] shenery:
PS check this out!

Haha
[Nexus 4 General] shenery:
Get her hopefully on Tuesday! :D
[Nexus 4 General] AdrienC:
[MENTION=1177803]shenery[/MENTION], you're running the mod without the case?
[Nexus 4 General] shenery:
Yeah I am. It'll be covering up electrical tape on my phone. It's about time like :/ lol
[Nexus 4 General] AdrienC:
is the case from [MENTION=5391330]goatgoatgoat[/MENTION] gonna be a commercial product? otherwise I'd like do join the beta test group. Get it printed and see how it goes..

I'm sick and tired of worrying about charging... I use a lot my phone and my charges don't last more than 6 hours. And it meet my needs other than the small storage, so maybe I'll just keep it until next year and wait for Nexus 4 2014
[Nexus 4 General] ^Fs:
You guys inspired me to make my own 10,000 mAh battery case!

What do you think?
[Nexus 4 General] ziddey:
Pretty much the only way to roll in NYC.
[Nexus 4 General] severectify:
frick I'd totally do this if I had the tools and the confidence
[Nexus 4 General] goat_sea:
Does someone have a model of the 3D back side they made for this mod? I know someone who could print it out for $5-10 and we could easily make more and sell them on here.

Not only that but I really want to do this now.

I'm drooling, I really like a fat girthy phone
[Nexus 4 General] hx4700 user:
Nooooooo! :eek: My glass back is the only thing broken on my Nexus 4. My previous HTC HD2 lasted 3 years without damage, and never had a case or sleeve.
[Nexus 4 General] max89564:
This thread made me join xda. I would like to mod my Nexus the same way to increase battery life.

Anything new on the case? Does it fit? Does qi still work? Could you send me the STL you used?
[Nexus 4 General] Grantius:
So I don't have a Nexus, I have a Chinaphone (ThL W8s) and I have 4 spare batteries for it. I got sent a whole bunch of free spares, no complaints here.

As the battery is removable, and I have a spare backplate for this care I feel this mode would be extremely easy and as the batteries are only 2mm thick, with the backplate cut and an aftermarket protecting case on the back I should be able to get away with it.

I currently get around a day of heavy usage from it, hopefully can get double after doing this mod.

Do you think I should?
[Nexus 4 General] LittleNICKY777:
Thanks for the info if I ever break my back screen I'll totally do this.
[Nexus 4 General] Richieboy67:
I'm working on a adding a car battery to mine. Battery life will be amazing though the added thickness and weight may be a small issue. :banghead:

Sent from my shiny new(bought last Nov), scratch less Nexus 4!
[Nexus 4 General] AdrienC:
just for the record, I've done it using a Note 2 battery.

Solding was pretty easy now that I discovered solding paste, the worse parts were removing the glass from the back of the housing and equalizing the batteries voltages.

I got on the first day almost 6 hours Screen On of heavy usage. After several hours stuck on 2%, I decided to run stability test app to burn it and it died after a while. Simply amazing.

Yes, I wiped the battery stats, and tried changing the battery capacity on Android System Tuner (xposed module) but didn't make a difference.

Every reboot the battery dropped 5-10% before reaching the 2% :laugh:

It's messy, you'll lose some time but I recommend doing it.

Just find out something to do the new back, as it's going to luck ugly as hell and will demotivate you. Tried to adapt some of my cases temporary but no luck, ended up with a phone that looks like it came from beakman's lab.

Now that I got an S4 today, I'll probably pass it along to my girlfriend or sell it and won't go forward with this, as she's a good artisan, if she decides to keep the battery, she might come up with something nice as the back plate...
[Nexus 4 General] dishon:
This is freaking awesome man! 7+ hours of screen on time on a Nexus 4? Dayim! Good job man! I wish I could do it too. Only problem is my Nexus 4 is still good as new coz I use cases a lot.

Thanks for all the step by step info though. I'm sure many will find it useful.
[Nexus 4 General] paperWastage:
see this file? https://android.googlesource.com/ke...7c95eac44/arch/arm/mach-msm/bms-batterydata.c

static struct pc_temp_ocv_lut pc_temp_ocv =

it gives you a lookup table - input temperature, voltage levels, and it extrapolates your battery level

you'll probably have to modify the same data inside nexus 4 kernel, based on your "new" battery characteristics... if you're willing to spend time to measure your battery voltage characteristics, you should be able to get better results
[Nexus 4 General] AdrienC:
Great! Thanks... I gave up my N4 to my girlfriend, but will play with this any weekend, still want to make an extended functional backdoor to use the extra battery, at least for when she's going on a trip or something.

And I guess this will be useful when I get my extended battery for the S4!!!
[Nexus 4 General] Samigg:
Is anyone have 3D model of extansion battery case?
[Nexus 4 General] GreatDharmatma:
I am going to try this coming weekend...
[Nexus 4 General] Samigg:
Did you break your back glass or you just want to increase Nexus 4 one charge life time?
[Nexus 4 General] mydan99:
Hi guys, im about to do this mod and have removed the back cover to inspect the inside first. I just wanted to those that have done it or know. The Nexus cover has gold connections which when attached intereact with antennaes and wifi modules. So if creating a new backplate without these gold connections will it affect signal and wifi. Ive removed the back now as i type this and have turned on the device to check the signals.

Im thinking of putting a note 3 battery in. I had an S3 with a 5000 Mah extended battery so the Note 3 battery would create a total 5200 including the stock.
[Nexus 4 General] Boyairek:
I thought it will more improve on screen usage. On stock battery i had more that 5h on screen. But even that is nice
[Nexus 4 General] Supracer:
Hey guys! I see you made a battery mod which is amazing and a genius idea! I recently bought a external battery pack like in the picture and it almost has the same dimensions as our nexus 4. My question is that should I stick it to the back and keep it charging my phone or whenever I need to use it I'll charge my phone?
[Nexus 4 General] Boyairek:
Does Qi charging working ?
[Nexus 4 General] faith1453:
Great modding i'm really impressed. Seems like a cool idea but in my case not really needed. I have charger with me everywhere i go and i since i dont travel much the extra battery life is not really necessary :)
[Nexus 4 General] dentedent:
Damn, almost want to drop my phone so I have an excuse to do this!
[Nexus 4 General] user822:
Is the charge controller actually included in the lithium batteries? Or at least a overvolt protection.

There is a reason you need complex chargers that can access every cell.
[Nexus 4 General] eddie3130:
Nexus 4+ZeroLemon 7000mah mod??

Hey guys hows it going. Im been a Note 2 user since it came out last year an after a while i kinda got over the whole phablet craze an kinda just wana go back to a phone thats easier to grab and tired of touchwiz. Dont get me wrong its a great phone just want something smaller and with stock android. Rite now only thing holding me back from going to a Nuxus5 or a nexus 4 is battery life. On my note 2 battery is great and i have 2 extra stock batteries i just switch out when one dies. An got to admit this realy made me want to say Ef it an get me a N4 with brocken back for cheap an just do this mod.

Well long story short.. was wondering if anyone of you guys have even thought about using one of those ZeroLemon batteries for this mod? You can buy one thats made for a phone that has a smaller oem battery that will fit in the old nexus 4 battery hole an just Solder it in an technically iys only ONE huge battery so that may address some issues an worries with connecting 2 batteries an maybe even will read the battery charge levels more accurately AND youl probably have more juice then connecting another oem one.. Idk it just an idea an i like where this thread went its a well worth mod for non removable battery phone out there. I was looking at the ZL batteries an the S3 is 7000 mah... not sure if itl fit in the crevis of the original N4 battery but if not you might be able to use the one they sell for a Galaxy Nexus wich is 5900mah wich is still a hige amount of juice. Il attach a pic.

---------- Post added at 12:46 PM ---------- Previous post was at 12:36 PM ----------
[Nexus 4 General] MrKaupo:
Parallel lithium batteries need proper charger, you are using hand grenade next to your head... And they are not even same manuf., age and capacity...
[Nexus 4 General] eddie3130:
i meant to remove the oem lg battery completely an replacing it with just one ZL battery. So no need to join any to together just sodder straight to the phone contacts.. Only issue i can see now is that the N4 battery is not centered an most ZL batteries from phone are made to be centered on the phone using this method would mean the battery would be hanging over the edge on one side.
[Nexus 4 General] rjunraj:
Hi friend my battery life is strange

After full charge battery loses 10% in just 5 second and then at 50% it will switch off and suddenly go to 0%

I think battery life is over

I tried changing roms but didnt helped

So going to buy a battery

Is it possible to put xiaomi mi 3 battery in nexus 4 ?

If only 2100 mah battery is last optiin then i would sell this phone but i wont place a2100 mah battery now
[Nexus 4 General] Murakuchi:
.

First of all, Hi rjunraj

If I got it right, you wanna replace te nexus 4 battery with that battery you named. It wouldn't fit properly. I recommend you to buy a new nexus 4 battery on ebay, so u know for sure it wil fit and it wont give any problems while connecting it. When you want to use the battery you named as a second internal battery you can use it if its 3.8V. It wont give any problems,

Now I want to ask something,

I'm planning to add a second internal battery in my nexus 4.

I have to buy a battery on ebay, which one would be te thinnest? It's have to be like >2000mAh.

I have searched for some, and it looks like the Huawei P6 battery or the motorola droid razr battery are the thinest.

Does any body know another good thin battery? Or any tips are welcome.

thankss
[Nexus 4 General] rjunraj:
Thanks mate

There are high capacity batteries available for lg optimus black ,galaxy s3 with the same size of stock battery

If i find any battery which is same in dimension but with high mah ,will that work ?
[Nexus 4 General] Murakuchi:
more mAh

All those batteries are fake. There is no way yet to increase the mAh of a battery without making it bigger. On ebay those batteries mostly named like 'golden battery'. If you google it u see everybody is complaning about how bad those batteries are.
[Nexus 4 General] asuperpig:
That looks amazing

:p
[Nexus 4 General] XenoPhase:
Really good mod, for sure the battery problem it's solved! :)

Inviato dal mio Nexus 4 utilizzando Tapatalk
[Nexus 4 General] renatofast:
just great!
[Nexus 4 General] dugfisher:
First of all, you're brilliant

You gave me the idea of trying this, then I remembered I work in an electronics shop at a University, and we have a 3D printer

Printing off a back right now

If anyone is interested in the results I'll post when I am finished
[Nexus 4 General] The_link:
I'd love to see the result. :)
[Nexus 4 General] fahadsul3man:
yes please , along with step by step guide for soldering the battery or whatever you did for noobs as well cuz the OP one is bit confusing
[Nexus 4 General] dugfisher:
Just got the prototype ready, I'm going to charge it up and let it run for a day or two then I'll redo it with pictures to show my procedure.
[Nexus 4 General] v1nsai:
Could someone post pics of the batteries wired in parallel? I'm a little unsure of where the instructions in OP say to solder the wires, and I'm nervous about doing something wrong. I've got lots of experience with electronics repair, but not a lot with modding like this. It seems pretty simple but I'd like to make sure I'm putting things in the right place.

Awesome thread OP, and thanks for all who are helping those of us who are not engineers understand how to do this. I don't know what they were thinking making such a great phone with such a tiny battery......

EDIT:

Just found this http://www.thingiverse.com/thing:516883

Get this printed at your local library or university and you're good to go ;)
[Nexus 4 General] :
Anyone still interested in the N4 shows only just how sweet of a device it was! I loved that phone but forgot about it quickly when getting the note 3, now I'm on the note 4 and well, it was a touch choice over the N6!

If only I was looking into this project now instead of how ever many years ago! My friend, who at the time was my roommate works at a High School that recently got a 3d printer! I also tried to find friends with 3d modeling experience to help make a digital file for a 3d printer representing a back plate for the N4 with a second battery. I couldn't find help with the model, and honestly the battery life wasn't ever that bad for me.

I also had figured out a way to extend the NFC plug down the height of the new battery so you didn't have to attached those wires. A thick rubber sheet the height of a battery, and the width and length of that plug. Run 4 wires through it making it kinda like a extender. Had sketches posted and all to some forum post I started working with the OP's idea but it quickly turned into a play ground for the mentally handicapped.

Good luck!
[Nexus 4 General] v1nsai:
I think it's a great device for something almost 3 years old. I like that I don't have to treat it like a $600 faberge egg in my pocket, but it's still a really powerful phone. The battery is so tiny and pathetic though it's driving me crazy. I had an extended battery on my S3, so I went from a ~6000mAh battery to a 2100. I'm surprised that the only battery case available for this phone is the Mugen that costs almost as much as I paid for the phone. I know it would solve all my problems but I just feel like I'd be getting ripped off.
[Nexus 4 General] pbababab:
Battery percentage error.

there is Chip on battery circuit which gives all the battery data like temperature and percentage of battery available. I haven't opened my phone battery so i can't tell exactly which chip it is but i guess its DS2781. So if we could wire up the second battery(without the circuit board) parallelly to the internal battery circuit board and do learn cycle, we could be able to get exact percentage of battery left.Sorry for my bad english.
[Nexus 4 General] Grantius:
Like how the zerolemon works on note 3
[Nexus 4 General] kannaiah:
Hi,

It's been almost 2 years from initial post.

Don't know any improvements in battery technologies.

I'm wondering if I can battery that fits nexus 4 with more capacity now.

Recently I replaced my nexus 4 battery and it looks rather tiny.
[Nexus 4 General] MrRaines:
MOG!! :eek:

Congratulations for your work!! LOL
[Nexus 4 General] siamak5561:
wowowwww thats amazing work. i like that.
[Nexus 4 General] eldar4uk:
amazing battery, for traveling the best choice, how long it's charging ?
[Nexus 4 General] omarabdellatif11:
Yeah, that's the first thing that popped into my head; how accurate is the battery percentage, considering that it's an aftermarket battery? Regardless, this is absolutely great, and a really creative way to tackle the issue of battery life.
[Nexus 4 General] bert1994:
I just added a 4000mAh battery to my Nexus 4 giving me 6100 mAh.

Did it yesterday. Charged only to 91% and stopps
[Nexus 4 General] nexus4nexus4:
[MENTION=4603346]tommmtom[/MENTION] & others

GREAT idea. I post my idea here:

http://xdaforums.com/nexus-4/general/nexus-4-project-extra-battery-t3161233

It could make a nexus 4 with 2 or 3 times (4200 or 6300 mAH) battery or even more.

Just double side tape the next battery to the back to the phone.
[Nexus 4 General] Niksda:
So is there a way to keep the original back on, and just replace the battery with a higher capacitated one?

I really like the thickness how it is right now. :fingers-crossed:

~ Niksda
[Nexus 4 General] elect86:
Hi [MENTION=3482034]bert1994[/MENTION],

could you please tell us something more? Which 4k mAh have you used? How did you connect it?
[Nexus 4 General] bert1994:
I just wired the batteries in parallel. I used a HTC Flyer batterie (sry cant link the battery as limitations seem to apply to my account). Hope i could help. Sry it took so lang
[Nexus 4 General] Armalong:
Wonder if someone still watchs this topic, going to do same upgrade with wood made back, it's ready, im waiting for the package as well as additional battery.
[Nexus 4 General] dragos281993:
Be sure to take some pictures, or maybe even make a short video about your "upgrade".
[Nexus 4 General] fuel426:
This is amazing. Keep on shining you bright star. I might even buy a nx4 to do this
[Nexus 4 General] Fatsodonkey:
Can you please translate that scetch text to english? I would love to get this 3d printed somewhere.
[Nexus 4 General] Armalong:
Why not, but I have to warn you, these measurements might be not very accurate. And I also made the cover 8mm thick because of the wood, it's not so solid as plastic. You can make it thinner, for example 7mm or even 6mm if you make the accumulator recess thinner.

aleksey-yaremenko.ru/uploads/render/3_eng.png
[Nexus 4 General] epicoftimewasted:
These mods are awesome. Thankfully my battery has held out pretty good over the years, so I haven't had to resort to anything so extreme!
[Nexus 4 General] Fatsodonkey:
The best thing would be if someone could 3d scan nexus 5 back inside out and then 3d print it with more size that would fit a second battery. That would be awesome. I just asked one company that would it be possible. Waiting for answer.
[Nexus 4 General] bert1994:
Nexus 4 Mod vs Nexus 6

After some months i need to say: My Nexus 4 with the 2100mah battery + 4000 mah battery performs as well as the nexus 6 regarding battery life. It seems there are some issues with both batteries having some current flowing in between.

However, my Nexus 6 does equal or better compared to my modded Nexus 4.

Also interesting: My modded Nxs 4 runs out of battery at the end of the day. Shutting down the device and turning it back on gives me about 70% of battery back. I know that the values shown in Android are not true values. So if anyone else plans doing this, you may need to modify some system files to make this work properly.