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I can charge my GT7+ connected to my MacBook

I accidentally found out I was able to charge my GT7+ on my Mac as follow:
I bought an external battery, New Trent IMP99D (Amazon Link) and it came with a special USB extension cable (picture below) that is designed for the Tab 10.1. If I plug the GT7+ directly to the IMP99D without using the extension cable, NO charging takes place. However, if I use the extension cable, charging works.
I connect the above extension cable to my MacBook Air, connect the GT7+ charging cable and the tablet and... VOILA.. it's charging! HoneyComb even reported that it is an "AC Charging" and it charge pretty fast.
So you can either
a). Buy the battery and it comes with the cable (you need external battery if you travel a lot... the GT7+ eat battery like crazy!)
b). Buy JUST THE CABLE, model IMP44B (manufacturer link here)
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I was under the impression that even though it shows an icon that it's not charging, it actually is. But it's trickle charging. Are you telling me that this cable can help make it charge faster? My heart would like to believe this, but my instincts tell me no.

Yes, it charge much faster. I did a quick test by plugging the GT7+ using the extension cable and monitored the battery percentage via Settings and mA usage via Battery Monitor Widget app. The result is as follow:
NOTE: Device is turned off all the time, only turned on to check battery. Wifi and GPS is ON.
12:48 AM
- Honeycomb battery @ 77%
- Battery monitor app: -26mA (just plugged in, the app read the mA state every 2 minutes)
12:54 AM
- Honeycomb battery 79%
- Battery monitor app +954mA
12:57 AM
- Honeycomb battery 80%
- Battery monitor app +929mA
01:00 AM
- Honeycomb battery: 81%
- Battery monitor app: +782mA
01:03 AM
- Honeycomb battery: 82%
- Battery monitor app: +864mA
So every 3 minutes it goes up by 1%.
Note that I am testing this while my MacBook Air is NOT connected to the charger. I notice my MacBook Air battery drain much faster. I use iStat Menus on my MacBook Air to monitor usage and the battery use goes down very quickly when the GT7+ is connected. So it seems that the GT7+ is drawing a lot of power using the extension cable, which is a good thing for me!
Just out of curiosity: Is this the same result you get with the "trickle" charge?

[Apk][Share]AccuBattery, the best battery monitor!

In the name of GOD
Hello community!!
I found a battery monitor in the playstore. It is so good!! So I'd like to share with you people! It's called the Accubattery.
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Almost every phone contains a little bit of hardware that can measure the current flow into or out of your battery, in mA or µA. We track this data continuously, but also segment it by screen state (on vs off) and which app was in the foreground. With this data, you can see clearly how your battery was used.
Battery life is probably the most common concern for smartphone users: some are finding it hard to get through a full day on a single charge, others find that after a year or so of use, their battery drains much faster than before, and the issues just keep lining up.
AccuBattery is a relatively new battery life monitor for Android devices (it supports the latest Samsung Galaxy S7s, Google Pixels, and so on) that focuses on accurate battery stats, but also on a research-based suggestion to avoid fully charging your battery.
AccuBattery allows you to set alarm that you actually charge your battery to 80%(Can be modified) and comes with clever tools to let you know when you've reached that level, so that you can unplug. This way, you can get the full 500 cycles(More than 1000, if you charge from 30 to 80 ) out of your battery, until you start to see a noticeable drop in battery life.
I still have my two year old Z2. It still holds battery like a new phone( with slight less capacity due to heat generated due to flashing roms). I used to charge my phone between 25%-80%.​
Download link - https://play.google.com/store/apps/details?id=com.digibites.accubattery&hl=en
Press thanks if I've helped you!!:fingers-crossed:

Inspired by AccuBattery I have created a raspberry pi 3 image which can stop charging your phone automatically after it reaches a certain percentage. Works on non-rooted phones.
https://metabubble.net/android/how-...roid-when-a-certain-battery-level-is-reached/

Looks very nice!

[APP][4.0+] Instant Charger - Battery Care v1.2

Instant Charger - Battery Care v1.2
Requirements: Android 4.0+
Overview: Charge your phone 3x faster than normal, and improve your battery
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Instant Charger will automatically activate when you plug the charger.
HOW TO USE: Press on the "Start" button, the app will automatically optimize the phone's charging capabilities by: killing all background apps, turning off WIFI, Bluetooth, and Location if you choose to, which makes ... faster charging. If you want to stop it just press "Stop" and all signals will be restored.
FUNCTION:
* Battery charger not only faster, but also extend the life of your battery.
* Displays the battery's basic information such as: Temperature, Technology, Voltage, Health, Plugged, Charge
* Beautifully designed, clean and simple to use.
* Application is FREE forever!
Download:
https://play.google.com/store/apps/details?id=com.instant.charger.app

ilikov said:
* Battery charger not only faster, but also extend the life of your battery.
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Click to collapse
How?

manpildo said:
How?
Click to expand...
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by "killing all background apps, turning off WIFI, Bluetooth, and Location if you choose to, which makes ... faster charging."

Banayat said:
by "killing all background apps, turning off WIFI, Bluetooth, and Location if you choose to, which makes ... faster charging."
Click to expand...
Click to collapse
Yes that's a temporary solution for faster charging by limiting background drain during charging, but how does it increase a battery's life? It's unclear to me whether OP means that the battery will drain slower or it prolongs the battery's health. But whatever he means I don't see how it can achieve either, judging by the description the app doesn't do anything extraordinary to lower your battery's drainage or increase its life.
Furthermore, I don't use location or bluetooth and I doubt merely disabling wifi and clearing background apps would result in 3x faster charging. If anybody tries this app, please inform if it somehow extended your battery life and charged 3x quicker.

[APP/NEW] Battery Lifespan Extender - The first app which prolongs battery lifespan

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Battery Lifespan Extender helps you to keep your battery in great condition for a long
time.
Modern batteries don't like extremes like high or low temperatures, as well
as discharging to 0% or charging up to 100% of their capacity. Our
app notifies you when your device starts to heat up or get cold to extend your battery
life. It also allows you to charge your battery partially to avoid deep discharging and
overcharging, and to radically prolong your battery lifespan.
Charging limits
Charging up to 100% or deep discharging down to 0% destroys your battery. If you
set “Max. limit“, you will be notified to unplug your device during charging. If you set
“Min. limit“ you will be notified to charge your device. Avoiding charging up to 100% or
down to 0% radically prolongs your battery lifespan.
Temperature protection
Modern batteries don't like extreme temperatures like cold or hot. If you set “Max./Min. temperature“, you will be notified every-time your battery heats up or gets
cold. It will help you to keep your battery in appropriate temperature to prolong its
lifespan.
Lifespan prediction
According to our tests and battery characteristics from manufacturers we discovered
how much the temperature, overcharging and deep discharging can affect your
battery lifespan.
Battery info
Our app gives you an overview of the battery level and battery temperature over
time, as well as real time information about the battery health, voltage and
temperature. This information can help you to keep your battery in great condition.
Available at GOOGLE PLAY

Update: I am currently working on automatic unplug of your device while charging. It is possible just for some devices with root rights.

DominikNozka said:
Update: I am currently working on automatic unplug of your device while charging. It is possible just for some devices with root rights.
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is self-stop charging available? we need alternatives to the battery charge limit app. thanks.

High Battery Voltage

I just charged my P4a to full capacity and monitored it with Accubattery. I have found out that final battery voltage is quite high, is it normal for battery used in this phone? Does Google use this high voltage to increase overall battery capacity at the expense of battery life? Thank you
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What is making you think 4.455v is high?

I've been reading that the most of Li-Pol batteries have maximum voltage of 4,2 V. Also the red colour of the graph little bit intimidate me.

myroncz said:
I've been reading that the most of Li-Pol batteries have maximum voltage of 4,2 V. Also the red colour of the graph little bit intimidate me.
Click to expand...
Click to collapse
What makes you believe AccuBattery (cough), yet another generic battry app, and related 'red' alerts have any relevance to the overall health of your device. Don't take the bait, mate.

the batteries tend to go beyond what is indicated, it is normal, so it is advisable to charge a maximum of around 80%, to keep the voltage below that threshold

I stumbled on this thread when checking what other P4 threads I was missing out on. The voltage is very transient, and you also have to be careful to distinguish between your battery voltage and the measured voltage in the system during charging.
NB: all the following is dependent on root.
The dumpsys batterystats includes lines for "volt=???". If you extract all of these and convert the ms offsets to times, you will get graphs like the following
I can only assume the numbers should be divided by 10 to get to the mV You can find this graph at Currently Running>Battery>Battery History Extras>AUTO-WIDTHx4>Graph of Explicitly Recorded Values [VALUE]>NONE - Direct Values Logged>Battery Volt [VOLT].VALUE
Also from the dumpsys, you can get the charging status (as well as battery power and with some calcs, the drain rate) which gives me the following for the same period as above
Pretty clear the measured "volts" jump up during charging. NB: I am using an old low wattage charger, not the fast charge.
The above graphs were generated using my app TeMeFI, with some details on the above features in the post1 and post2. There are >100 other graphs from the app, including the discharge rate over time. Ands you can also extract the data frommwhiuch the graphs are based.