Develop Bugs

[Q] Charging Speed - Different from a/c than from USB?

So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?

Benny_L said:
So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?
Click to expand...
Click to collapse
You've pretty much answer your own question!
The current supplied by a charger/USB port determines how fast it can charge the battery, which is why the wall charger (1amp) charges much faster than a PC USB port (0.5 amps).
Regards,
Dave

It's almost completely logical.. say you have a 1.5A battery (1500mA) and a 500mAh charger (ie USB) then it will take 3 hours for it to charge but with a 1000mAh charger it will take an hour and a half.
Can't really explain it more than that, so hth.

Well , Yes and No
This is only partly true ......
If you charge it on the PC , max output is 0.5 amps , and data is possible while charging .
Now with Desktop and car charger , the amp can be anything the manufacturer likes but you have to keep the following in mind :
USB Specs state the following :
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In Battery Charging Specification,[32] new powering modes are added to the USB specification. A host or hub Charging Downstream Port can supply a maximum of 1.5 A when communicating at low-bandwidth or full-bandwidth, a maximum of 900 mA when communicating at high-bandwidth, and as much current as the connector will safely handle when no communication is taking place; USB 2.0 standard-A connectors are rated at 1500 mA by default. A Dedicated Charging Port can supply a maximum of 1.8 A of current at 5.25 V. A portable device can draw up to 1.8 A from a Dedicated Charging Port. The Dedicated Charging Port shorts the D+ and D- pins with a resistance of at most 200Ω. The short disables data transfer, but allows devices to detect the Dedicated Charging Port and allows very simple, high current chargers to be manufactured. The increased current (faster, 9 W charging) will occur once both the host/hub and devices support the new charging specification.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
So if your Desire ( Yes , the Desire supports these specs ) detects the short , it will switch to fast charging mode otherwise it will limit the charging current .
Unfortunately , there's no way to know , just by looking at a charger, if it respects the specs or is just a low cost 5V powersupply . I've encountered quite a few ( mostly lowcost) desktop and car chargers that are rated between 1 and 2 amps , but still take bl**dy ages to charge the phone . Checking those with a measuring tool , you usually see the data pins are "Not Connected" instead of being shortened :-(((
Final Word .... don't try to save some money on a cheap charger , you'll regret it Genuine HTC works great , others do the same , but don't expect a $1 charger from Hongkong or whereever to do it !

These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
-----------------------------------
- Sent via my HTC Desire -

th3 said:
These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
-----------------------------------
- Sent via my HTC Desire -
Click to expand...
Click to collapse
Ya, I noticed the charge slows down considerably for the final 10-15 %
I find myself charging my Desire more than I actually use it, lol.

I found now the answer to this problem: I use a Nokia charger (5v and 890 mA) with a microusb adapter. You can find one on eBay at ~2$
Now it takes about 2 hours from 20% to 100%
Lets hope nothing wrong happens to my precious Desire

look here for a method to charge at ac speed from usb, explains a few things too.

hox & fast chargers

Is it safe to use a 2.1a 5v usb charger with the hox?
Will it speed the charging? (Stock charger takes 4 hours to charge!!)

Doorman404 said:
Is it safe to use a 2.1a 5v usb charger with the hox?
Will it speed the charging? (Stock charger takes 4 hours to charge!!)
Click to expand...
Click to collapse
It's safe, but it won't speed it up.

so 4 hours charge is normal? (With the stock charger)

I dunno, never timed it, but charging a LiPoly battery faster than that can shorten its life, and since its not removable, that would be a pain.

Doorman404 said:
Is it safe to use a 2.1a 5v usb charger with the hox?
Will it speed the charging? (Stock charger takes 4 hours to charge!!)
Click to expand...
Click to collapse
As Ben
said should be safe but won't speed up
Doorman404 said:
so 4 hours charge is normal? (With the stock charger)
Click to expand...
Click to collapse
kinda think there is a bit threads about that too. Yeah takes too long....
BenPope said:
I dunno, never timed it, but charging a LiPoly battery faster than that can shorten its life, and since its not removable, that would be a pain.
Click to expand...
Click to collapse
One additional thing. Learned that the hard way.
Bought a HTC car charger. HTC supplied cable to that HTC car charger. Original HTC car charger on this charger sucked... despite showing AC charging
So look first when you charge if it says USB charging or AC. And then check how long it does to charger. Change the cable to the original one supplied with the phone if it's more as on that original stock charger
Sent from my HTC One X using Tapatalk 2

Well charging doesn't have 100% efficiency so a 1a charger won't charge at 1a, so a higher charger means you should get to the 1a limit but it's not going to reduce charging times enough to notice.
Sent from my HTC One X using xda app-developers app

treebill said:
Well charging doesn't have 100% efficiency so a 1a charger won't charge at 1a, so a higher charger means you should get to the 1a limit but it's not going to reduce charging times enough to notice.
Click to expand...
Click to collapse
A charger rated at output of 1A should be capable of outputting at 1A. Of course, it will draw a little more power from the input than it provides to the output.
When charging, during the first phase (constant current) the maximum current draw is typically around 1A, for up to about an hour, then it drops off quite quickly when it moves to the second phase of constant voltage.

QI Charger in car. With data & GPS ?

No
Can a qi charger charge the nexus 5 when data and GPS is being used ?
Will it charge or will the battery drain?
Sent from my Nexus 7 (2013) KitKat 4.4.2

Power consumption during data and GPS use varies depending on what apps are used, signal strength ect... so there is no definite answer. In general, I notice slight battery drain when using navigation when on wireless charging. Google's nav app uses more power than the 500 mah the Qi charger provides but the drain is much slower than on battery alone..

rikudo said:
Power consumption during data and GPS use varies depending on what apps are used, signal strength ect... so there is no definite answer. In general, I notice slight battery drain when using navigation when on wireless charging. Google's nav app uses more power than the 500 mah the Qi charger provides but the drain is much slower than on battery alone..
Click to expand...
Click to collapse
Sorry, but what Qi charger are you using that only provides 500mA?
Even my $15 generic ebay Qi charger gets 751mA.

mmmmBACON said:
Sorry, but what Qi charger are you using that only provides 500mA?
Even my $15 generic ebay Qi charger gets 751mA.
Click to expand...
Click to collapse
500 mA was an estimate, individual results vary. Take into account wireless charging has an efficiency of 70-80%, so a charger with a 751mA output would effectively charge at 600-526mA. Add a phone case and/or imperfect alignment charging efficiency drops even lower. In real world use my 750 mA qi charger charges at about the same rate as a 500 mA USB port.

rikudo said:
500 mA was an estimate, individual results vary. Take into account wireless charging has an efficiency of 70-80%, so a charger with a 751mA output would effectively charge at 600-526mA. Add a phone case and/or imperfect alignment charging efficiency drops even lower. In real world use my 750 mA qi charger charges at about the same rate as a 500 mA USB port.
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Click to collapse
Oh yeah, I took that into consideration already, which is why I gave such an exact number. I got 751mA from a 5V/1A output rated Qi charger.
I've done a bunch of tests of charge rates with stock, higher amp chargers, and my generic Qi charger.
http://forum.xda-developers.com/showpost.php?p=48856141&postcount=18
As long as the Qi charger you buy is rated as 5V/1A output (which is almost all of them out there, including the official nexus wireless charger, tylt vu, etc.), you should get around the charge rate I mentioned if it's maxed out fully. So people buying the expensive Qi chargers, are not getting any speed improvement over the cheap one I bought. Might look a little nicer sure, but I'll gladly keep the $20 - $50 in my pocket instead. If you want to read my whole post, I linked it.
Here's just the data portion.
Stock 1.2A LG wall adapter: 1053mA
2A USB wall adapter: 1053mA
Built in USB input on power bar: 1053mA
USB 3.0 port (desktop computer): 446mA (surprised it was so low for a USB 3.0 charge port)
USB 2.0 port (desktop computer): 334mA
Generic Qi charger (2A input/1A output)/Built in USB input on power bar: 751mA
Generic Qi charger/Stock LG adapter: 751mA
Generic Qi charger/2A USB adapter: 751mA
Generic Qi charger/USB 3.0 port: 696mA (interesting compared to directly plugging into USB 3.0)
Generic Qi charger/USB 2.0 port: 502mA (low, but again higher than direct cable)
Click to expand...
Click to collapse
That's why I was just wondering what Qi charger you had and why you were saying 500mA because that is less than half the charge rate of the stock wall charger.

mmmmBACON said:
Oh yeah, I took that into consideration already, which is why I gave such an exact number. I got 751mA from a 5V/1A output rated Qi charger.
I've done a bunch of tests of charge rates with stock, higher amp chargers, and my generic Qi charger.
http://forum.xda-developers.com/showpost.php?p=48856141&postcount=18
As long as the Qi charger you buy is rated as 5V/1A output (which is almost all of them out there, including the official nexus wireless charger, tylt vu, etc.), you should get around the charge rate I mentioned if it's maxed out fully. So people buying the expensive Qi chargers, are not getting any speed improvement over the cheap one I bought. Might look a little nicer sure, but I'll gladly keep the $20 - $50 in my pocket instead. If you want to read my whole post, I linked it.
Here's just the data portion.
That's why I was just wondering what Qi charger you had and why you were saying 500mA because that is less than half the charge rate of the stock wall charger.
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Click to collapse
This is strange, I used the "Current Widget" app as well. . I'm currently using an Anker Powerbank, it's a 6000 mAh battery with a built in Qi charger which shows an average 500 mA charge rate. I also have an official Nexus 5 Qi charger that also shows about 500 mA charge rate. When connected directly to the Nexus qi charger wall adaptor I get a 1560 mA charge rate. Thanks for your data, this makes me wonder how accurate "Current Widget" app actually is since our results differ so much.

rikudo said:
This is strange, I used the "Current Widget" app as well. . I'm currently using an Anker Powerbank, it's a 6000 mAh battery with a built in Qi charger which shows an average 500 mA charge rate. I also have an official Nexus 5 Qi charger that also shows about 500 mA charge rate. When connected directly to the Nexus qi charger wall adaptor I get a 1560 mA charge rate. Thanks for your data, this makes me wonder how accurate "Current Widget" app actually is since our results differ so much.
Click to expand...
Click to collapse
Yeah, I used CurrentWidget as well, it's a pretty close estimate, but it won't be 100% accurate. I just didn't want to tear things apart and use a multimeter to take readings. Make sure your CurrentWidget update interval is set to 1 so it gives you live updates. Then you just have to give it a few minutes to stabilize (it will always fluctuate though) and watch for the consistent highest reading over a period of 5 to 10 minutes to be as accurate as you can. For my readings, 751mA kept popping up over and over again but never higher, so it was reasonable to say that was the max my Qi charger was capable as long as it was receiving ample power itself.
The charge rate will also vary depending on where in the battery charge cycle you are recording. At the beginning and end of the charge cycle, it will not charge at full speed and will slow down the charge. This is to protect the phone and the battery. For best range of recording, try to take your readings when your battery is charging around the 25 - 65% full mark, that way you can be pretty confident that your phone/battery is allowing the charger to charge at full speed.
What is your Anker Powerbank output rated as?
Also, was that 1560mA a consistent reading, or just a spike?

Most likely it'll go down if the screen is on, if the screen is off, it may stay or go up extremely slow.

Thanks for the replies.
If the charge will go down when screen, data and GPS are on.. Then it's not really a suitable for a sat naval replacement.
Looks like I'll need to go with a cable.
Sent from my Nexus 7 (2013) KitKat 4.4.2

Look at those car cable mods, they'll meet your needs and will give you an idea on how to hide the cables
Sent from my SM-N9005 using Tapatalk

The qi chargers I tried in the car slowly drain the battery with navigation and streaming music. Do I went back to the cord in the car.
Sent from my Nexus 5 using Tapatalk 2

Don't forget with GPS and other things on your temperature will go pretty high and could reach 45C where wireless charging practically turns off and your charger will only try and maintain the current battery percent. At least this happens to me monitoring it using battery widget.
Sent from my Nexus 5 using Tapatalk

I haven't gone so far as to install current widget, out even better battery stats, but I have taken some long trips with navigation and music streaming, screen on the whole time, and with the cheap Chinese 'c1' car mount, I always arrive with more charge than I left with. Maybe this is because I live in a cold climate, and the charger does not stop because of excessive heat.
Sent from my Nexus 5 using Tapatalk

mmmmBACON said:
Yeah, I used CurrentWidget as well, it's a pretty close estimate, but it won't be 100% accurate. I just didn't want to tear things apart and use a multimeter to take readings. Make sure your CurrentWidget update interval is set to 1 so it gives you live updates. Then you just have to give it a few minutes to stabilize (it will always fluctuate though) and watch for the consistent highest reading over a period of 5 to 10 minutes to be as accurate as you can. For my readings, 751mA kept popping up over and over again but never higher, so it was reasonable to say that was the max my Qi charger was capable as long as it was receiving ample power itself.
The charge rate will also vary depending on where in the battery charge cycle you are recording. At the beginning and end of the charge cycle, it will not charge at full speed and will slow down the charge. This is to protect the phone and the battery. For best range of recording, try to take your readings when your battery is charging around the 25 - 65% full mark, that way you can be pretty confident that your phone/battery is allowing the charger to charge at full speed.
What is your Anker Powerbank output rated as?
Also, was that 1560mA a consistent reading, or just a spike?
Click to expand...
Click to collapse
The Powerbank Qi output is rated at 500 mA. The 1.8A wall adaptor gives a fairly consistent reading above 1500 mA.
I set faster update interval and found the following averages. (Battery @ 50%)
Nexus Qi 1.8A wall adapter: 1500-1605 mA
Nexus 5 stock wall adapter: 900-1000 mA
Nexus Qi charger plate: 450-740 mA
Qi Powerbank 500 mA: 300-476 mA
PC 2A USB port: 550-750 mA
It seems the Current Widget rates the summarized magnitude of draw from the battery. For example having the screen on and higher brightness will subtract from the measured charge. To negate this I placed the phone in airplane mode, screen off and set sampling to 5 s. Then after 10 s turned the phone on to view the last sample taken with the screen off.
Looks like you were right, a 750 mA rated charger factors in transmission losses. The Official Nexus Qi plate puts out 750 mA max. The Powerbank puts out 500 mA as labeled. The 1.8A wall adapter was surprising though. Anand's article stated the max charge rate was 1.2A but the 1.8A adapter clearly exceeds this rate.

rikudo said:
The Powerbank Qi output is rated at 500 mA. The 1.8A wall adaptor gives a fairly consistent reading above 1500 mA.
I set faster update interval and found the following averages. (Battery @ 50%)
Nexus Qi 1.8A wall adapter: 1500-1605 mA
Nexus 5 stock wall adapter: 900-1000 mA
Nexus Qi charger plate: 450-740 mA
Qi Powerbank 500 mA: 300-476 mA
PC 2A USB port: 550-750 mA
It seems the Current Widget rates the summarized magnitude of draw from the battery. For example having the screen on and higher brightness will subtract from the measured charge. To negate this I placed the phone in airplane mode, screen off and set sampling to 5 s. Then after 10 s turned the phone on to view the last sample taken with the screen off.
Looks like you were right, a 750 mA rated charger factors in transmission losses. The Official Nexus Qi plate puts out 750 mA max. The Powerbank puts out 500 mA as labeled. The 1.8A wall adapter was surprising though. Anand's article stated the max charge rate was 1.2A but the 1.8A adapter clearly exceeds this rate.
Click to expand...
Click to collapse
That is interesting. My finding mirrored that of Anandtech. I used both the 1.2A stock adapter, and a 2A adapter and I was not able to increase my charging speed at all. It stayed at 1053.
Can you check the plug to see the voltage of the Nexus 5 Qi adapter. Is it 5V?

how to get more speed charging?

hi guys,
i have two chargers,
1. output 9.0V 1.67A or 5.0V 2.0A
2. output 5.2V 2.4A
and a usb-c cable, in the cable box i find that this cable is supporting for fast charging and support to 2.4A but when i tried it with the two chargers, and test it using 'ampere' app i got max to 1010mA with both chargers adapter ! even with this value i feel it charging my mobile quickly, and in the bottom of the lock screen i see 'charging rapidly' but i want more and why the phone is not charged depending on the values in the chargers (1.67A - 2.0A - 2.4A) and cable (2.4A)

The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.

You realize slow charging is better for the long-term life of the battery, right?

sublimaze said:
You realize slow charging is better for the long-term life of the battery, right?
Click to expand...
Click to collapse
Considering we often get new phones every 2-3 years, you won't see much of a degradation from rapid/fast charging.
Rather, you'll see a degradation from charging from <15% to 100% (which people do often). That will be a more significant reason someones battery will lose much off its lifespan.
I wish Android would have a built in limiter. I'm sure in the next few years, both iOS and Android will.

Strephon Alkhalikoi said:
The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.
Click to expand...
Click to collapse
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help

Strephon Alkhalikoi said:
The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.
Click to expand...
Click to collapse
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.

Chouiyekh said:
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help
Click to expand...
Click to collapse
tbkrazeey said:
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.
Click to expand...
Click to collapse
There's nothing I can help you guys with. All I can tell you is what ratings your charger should have, based upon the information printed on the pair of chargers I received with my device when I purchased it directly from Google. If you have a genuine Google charger and the P2XL is still not charging fast, contact Google.

stuff said:
Considering we often get new phones every 2-3 years, you won't see much of a degradation from rapid/fast charging.
Rather, you'll see a degradation from charging from <15% to 100% (which people do often). That will be a more significant reason someones battery will lose much off its lifespan.
I wish Android would have a built in limiter. I'm sure in the next few years, both iOS and Android will.
Click to expand...
Click to collapse
Unfortunately, i hope someone could help

Chouiyekh said:
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help
Click to expand...
Click to collapse
I thought that charging capped out at roughly 1000 mA when the screen is on to protect the battery from overheating/putting too much strain on it. Which could lead to degradation of the battery. That would explain why you only see 1010 mA on Ampere - because the screen is on. I don't think Ampere measures while the screen is off, so it is difficult to say what value it would be giving you.
That is my experience even using the stock charger that came with the phone.

pemz82 said:
I thought that charging capped out at roughly 1000 mA when the screen is on to protect the battery from overheating/putting too much strain on it. Which could lead to degradation of the battery. That would explain why you only see 1010 mA on Ampere - because the screen is on. I don't think Ampere measures while the screen is off, so it is difficult to say what value it would be giving you.
That is my experience even using the stock charger that came with the phone.
Click to expand...
Click to collapse
maybe your opinion is right. my next experiment is from 0% to 100% with the old charger and with the stock charger, then i will see if there is a difference

tbkrazeey said:
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.
Click to expand...
Click to collapse
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.

nlinecomputers said:
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.
Click to expand...
Click to collapse
That makes sense then, it seems like everything gets more complicated every year.

I just purchased one of these from Amazon. Note that it supports Power Delivery 3.0. This unit quick charges my phone. The Moto Charger I have for my old Moto G5+ which is a Qualcomm charger will charge the phone but only at slow speeds.
https://www.amazon.com/gp/product/B07H6BQNGF/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

nlinecomputers said:
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.
Click to expand...
Click to collapse
i bought this : http://www.ebay.com/itm/113109823570
what do you think ?

If it is really the OEM parts that will work. The pictures look like mine, but ya know eBay....

Accubattery charging stats. Are these normal?

Let's take the charge current and voltage as 3000 mA and 4400 mV for best case scenario, the actual resulting wattage is 3000x4400 = 13200000 (i.e. 13.2W) which is still way lower than 18W. So what's the deal here?

It is charging the phone at 12V 1.5A = 18W
Charging the battery requires 5V Input (The shown 4400mV is the battery Voltage, not Charging voltage) so it needs to get Converted from 12V to 5V
In my case, It is charging at 12V 1.5A Converted inside the phone to 5V 3.4A = 17W (Software based Charging meter are not really accurate, it is even said in the app)
*To get full charging speed, the battery needs to warm up a bit, so the first time plugging the Charger wont be at full speed
*The battery Voltage will increase from around 3.8V at 5% to around 4.3V at 100%

Trisks said:
It is charging the phone at 12V 1.5A = 18W
Charging the battery requires 5V Input (The shown 4400mV is the battery Voltage, not Charging voltage) so it needs to get Converted from 12V to 5V
In my case, It is charging at 12V 1.5A Converted inside the phone to 5V 3.4A = 17W (Software based Charging meter are not really accurate, it is even said in the app)
*To get full charging speed, the battery needs to warm up a bit, so the first time plugging the Charger wont be at full speed
*The battery Voltage will increase from around 3.8V at 5% to around 4.3V at 100%
Click to expand...
Click to collapse
So how to see this accurately in an app? Is there a way where I can check the actual charging voltage and current received by the battery?
Are you also using Accubattery?

th1nd said:
So how to see this accurately in an app? Is there a way where I can check the actual charging voltage and current received by the battery?
Are you also using Accubattery?
Click to expand...
Click to collapse
Use hardware based charging meter like these. But its not really required, you can trust the Factory charger saying its 12V 1.5A.
What you can't trust is third party charger and cables in which case you should check using this.