[MOD] Battery swapping tips - HTC U11 Guides, News, & Discussion

After buying three fake replacements batteries, declared as OEM, with capacity about 2000 mAh instead of original 3000 mAh, I decided to build my own custom battery.
Don't try to replicate my work. I have no responsibility for that.
Physical size of original battery is just about size of three 18650 cells next to each other.
But there is some limitations with using 18650 cells:
Maximal charging voltage is 4.2 V !! Most important issue! Solved with AccA application and limiting maximal charging voltage. Root required.
Need for welding cells together in 1S3P configuration.
Need for extraction and soldering electronics from old battery to newly welded cells
Total thickness (diameter) of cell. Solved by 3D printing custom battery cover.
Mounting cells securely to phone body. Solved by 3D printing battery base.
and many more
Benefits of this mod? Theoretically 10500 mAh capacity (3x 3500 mAh). But because of relatively early phone shutdown around 3.5 V, usable capacity is lower.
Battery base for 18650 cells:
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Cells glued to battery base and to phone itself and finally battery cover installed:
Battery usage:

nice, how much you get compared to original for this setup? from 3,5V there is a lot of energy in 18650

About 6000 mAh, and that's sad I was hoping for like 9000 mAh. But for backup phone, 6000 mAh isn't bad at all ;-)

Related

Charging slow while phone says rapidly

Hey all,
A few days ago I've bought a secondhand nexus 6p. Overall I'm quite happy with the device, but I think I'm experiencing some charging issues.
The max USB current in Ampere never gets over 1800 mAH (while my mom's nexus 5x shows max USB current 3000 mAH with my charger) Also, I've never seen it charging with higher power then around 1400-1500 mAH.
I've tried my mom's nexus 5x charger, but I'm getting the same results. My phone actually charges faster with a regular 2 amp charger with a regular USB cable to USB c..
Also, while I'm doing nothing but having the ampere app open it discharges with - 1100 mAH. Is that normal?
Here are some screenshots:
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What are your thoughts?
By the way: eve when the battery is down to 22% it doesn't charge faster..
Are you using the stock 6p charger and cable?
In my experience, Ampere does not work properly with the Nexus 6P. For me, it always shows Max USB curr 1800 mA and current in the 2100 mA range when using USB-C, even though I can see on my Kill A Watt that it is drawing 13 watts or more.
regardless of what the apps say, how long does it actually take (elapsed time) to charge your phone?

Quick charge or not?

So, I had to change my original Xiaomi Redmi 4 Prime charger 'cause I lost it, and I went for AUKEY quick charger -> https://www.amazon.it/AUKEY-Caricabatterie-Caricatore-Samsung-iPhone/dp/B01AHYR04M, tempted by the possibility of charging my phone in less than the usual 2 hours.
However, I'm realizing now I probably did a bad move, since I'm reading many posts about how using a quick charger can reduce your battery life on the long run, some state they've used quick charge from the beginning (I mean right after they bought their phone) and they had to change battery or phone after one year and half more or less, not even able to reach more than 2 years, whereas some other claim they've always used a normal charger and their battery is as still good as the "old" times.
I'm thinking about sending the charger back and take a normal one, what's your opinion about it? Should I go for a charger with 2.0A in output?
R4P doesn't have Quick Charge compatibility in any case. It'd probably overheat like crazy even if it did.
Sure it has...
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... see that circle around the thunderbolt icon? That means fast charging, when I charge the phone with a non quick charger, it only appears the thunderbolt. And it's also stated in the block screen, "Fast charging".

Power connector on Galaxy S6 main board

Hi, I could use a bit of help, if possible. My phone (S6 Edge) went into salt water and then quickly died. My goal at this point is to hack the phone back to life just long enough to do one final backup. At this point I have disassembled the phone and cleaned the salt residue off the board with a soft toothbrush and alcohol.
Here's a picture of the main board where the battery attaches. It appears that the saltwater shorted there and essentially melted the power connector. The battery connector (not shown) is similarly destroyed.
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My assumption is that there are normally 4 circuits between the main board and the battery:
1) +3.0V
2) GND
3) Temp sense (thermister?)
4) Temp sense
Unfortunately it's hard for me to tell what goes where because both connectors are so badly destroyed.
What I'd like to try (nothing to lose at this point) is to wire up these four circuits and bring them out to a lab bench power supply and perhaps a resistor to emulate the temperature sense (assuming that the phone will require some reading on signals 3 & 4 above).
Does anyone know where to tap into the +3.0V and GND connections immediately downstream of the battery connector? Perhaps the + and - pins of one of the caps?
Same question on where to tap into the temp sense pair. Nominal value of the thermal sense in ohms?
Thanks to anyone who may have mapped out this part of this board....
Bryan

Nexus 6P new battery quick discharge 1000mA

Hello Team,
after 2,5 years I replaced my old battery. I received the origin Huawei HB416683ECW 3450mAh and replaced it
However it is draining / discharging faster than the old one.
- I performed calibrations as on the picture
Method 1. Still discharging fast
- performed factory reset - renewed the application - still discharging fast
- wiped all partitions, flashed the latest angler imager (dec 2018) and ragvans 4core fix. Installed only "devcheck" and "AccuBattery". Still showing discharge current about 1000 mA. Sometimes is shows 400mA, sometimes 175mA, often it shows higher discharge current (more than 800mA).
Mobile network is 4G, mobile data switched off, only Wifi is switched on and position and bluetooth is also switched off. Adaptive brightness switched offOnly those 2 application running in background, installed.
After 14 min of not using it, battery dropped by 2 %
See timestamp on screenshots
The 4core fix was installed also before battery replacement and it was not discharging so quickly.
On battery is written 2018.
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Could you advise please ?

Max Battery Voltage?

I stumbled across the "Charger"-Area in the Oneplus Logkit and was wondering why the battery voltage is that high. Max Voltage for Li ion battery is 4.2 isnt it?
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Ramsi Hartmann said:
I stumbled across the "Charger"-Area in the Oneplus Logkit and was wondering why the battery voltage is that high. Max Voltage for Li ion battery is 4.2 isnt it?
View attachment 5101065
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I believe that's charger, not battery. All USB (generally) is 5v. IPhones charge at 5v 2amps, our phone charges at 5v 6amps (5x6=30w warp charge) . The fact it's 5v is a good thing. The battery will still top out at 4.2ish. See my image. I'm at 66% and voltage is around 4v. Will be 4.2ish when charged
Ramsi Hartmann said:
I stumbled across the "Charger"-Area in the Oneplus Logkit and was wondering why the battery voltage is that high. Max Voltage for Li ion battery is 4.2 isnt it?
View attachment 5101065
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Click to collapse
Old thread but since i stumbled upon this...
Oneplus uses higher voltage cells (LiHv) that max out at ~4.45v
Li-ion batteries are capped at 4.2 like 18650 ones. Li-poly batteries go higher

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