When I plug in a charger, I can run the following shell command to see the charging source:
cat /sys/class/power_supply/battery/charging_source
This normally returns 0, 1, 2, or 6.
0= No charger connected.
1= USB Normal Charge.
2= AC Fast Charge.
6=????????????
Does anybody know what type 6 is?
I experience this type 6 on the GS2 Skyrocket and it results in a wakelock that is only resolved by restarting my phone or plugging in a type 2 charger.
AT&T GS2 Note owners also see type 6 chargers and report that they give less of a charge. I have not tested the power output.
I've tested the same type 6 chargers on my wife's AT&T GS2 (i717) and they are reported as type 2.
Thanks.
Related
So with the Current Widget installed I can monitor the incoming charge rates vs different usb chargers. Here is what i have found:
USB on samsung 1A charger: 10050mah
USB on computer: 4950mah
Shorted data pins usb cable on computer: 9550mah
MHL cable 2950mah max via any type of cable/charger.
This enevitably will drain the battery from 100% to below 10% within a few hours even plugged in. No marathon sessions of any type or even a casual flick if you start out below 50% remaining to begin with.
There must be a software override to force the current governor in the phone to allow the full amp in the charger be used in cases of MHL. Has this already been done? Anyone have a solution?
I dont think the current widget is accurate.
Sent from my SAMSUNG-SGH-I717 using XDA
accuracy
The Current Widget states support for the galaxy note, but only shows the current flow while charging (ie it will not report current drain rate) My testing and subsequent numbers are proved accurate by the charge rate over time vs displayed current rate vs battery state. So I believe in this case the numbers reported by Current Widget are quite accurate.
[email protected] said:
USB on samsung 1A charger: 10050mah
Click to expand...
Click to collapse
That would be 10 amps - the battery would charge in no time
The rates are from a dump of a register on the phone and are ten times the ma being used/charged.
accuracy
This makes alot of sense, thank you. In this case the results are still valid as long as we divide the result by 10 at the end of the formula. The recharge rate with MHL is limited to 300ma, which inevitably leads to battery drain. There must be a software switch to override the maximum charge rate.
Charge cable
Use a cord meant for charging or a very short cord. The wire used in a normal usb micro cable is a very fine gage and gives enough voltage drop to severely limit the current. This is even with the high power charger or the shorted data lines
cord length
Thanks for the advice, but I have already tested multiple cables, down to just 2 feet. Voltage drop is negliable in any cable i have tested with. It is obviously a software limiter of some type. With MHL cable plugged in but not active, regardless of the source power, charge rate is limited to 300ma. Test it for yourself!
Read this thread, it's very informative.
http://forum.xda-developers.com/showthread.php?t=1519084
I have a Samsung MHL adapter and when I used it last night, the battery status showed "AC" but it only was drawing 460 ma according to the charging register (which the current widgit uses). With the same wall charger and cord plugged directly into my phone, the charging register starts out at 1007 ma and drops to the high 900's.
I have recently been profiling a few USB chargers to figure out which one is the best for rapidly charging my phone. A few threads have pointed to the EP851 charger being something a bit special. I was thinking about it on the drive into work..
The specs say that it charges for 60 minutes talk time in 10 minutes.
The XS has 8.5 hours talktime,
This means the charger can fully charge the phone in 8.5 * 10, 85 minutes
Plugging these values into my Charge Timer app gives an estimated power output of 1235ma, almost identical to the 1211ma of mu cheapo 1500ma charger.
Given this closeness, and the fact that the EP850 is also rated at 1500ma I am conclude that they are the same thing.
So, if you want a fast charger for your XS, and are waiting for the EP851, stop waiting and get a genuine BlackBerry Playbook 2A charger. It is about 10% faster (est 1314ma) and available now.
Charger results
http://vexedbadger.com/?page_id=97
not updated with the estimated EP851 yet
That's throwing some serious power at the battery, is it safe? Will it knacker the battery faster? The PlayBook charger im referring to
Sent from my LT26i using xda premium
Is it possible that the S has the "boost" pin with its USB connector and the 51 triggers it?
This is my understanding of it. PIN 1 and 4 provide power, 2 and 3 provide data (and 5 provides USB OTG?)
If pin 2 and 3 are not bridged, the phone will charge at the maximum rate as determined safe by the usb 2.0 spec
If pin 2 and 3 are bridged the phone will charge at the maximum rate as determined safe by the phone designers.
Both scenarios are, of course, restricted by the power that the connection can supply. For example, if you plugged the phone into a 1000A charger, I would expect it to only pull about 6? amps
As for "is the Playbook charger is safe?", the Playbook has the same type of battery as the SXS, just a lot bigger. For the Playbook, this charger is considered the slow charger, and a rapid charger that pushes more amps at 12V is available.
Obviously, its your phone so use it how you want. I prefer mine in my pocket instead of tethered to a wall so I am going to use the fastest charger I can.
Hi
this is what I experience with my new Galaxy S3:
My main charge + USB -> microusb cable used to charge the S3, now it won't (the battery does flash for a few seconds as if it was charging but then it stops)
I need to plug the phone to my laptop to get it charged and it takes far longer!
Has anyone solved the issue?
Thanks a lot
BenG
Faulty or loose charge point/charger? There is no issue with charging in the phone itself.
Edit: You just ended up making 2 identical threads
already ordered a charger that matches the s3's specs i.e.
model: ETAOU81EBE
Input: 100-240V ~
Frequency: 50-60Hz 0.15A
Ouput: 5.0V 1.0A
currently only modele available that does it is the ETAOU81EBE.
I'm wating for it.
sorry for double post.
watsa said:
Faulty or loose charge point/charger? There is no issue with charging in the phone itself.
Edit: You just ended up making 2 identical threads
Click to expand...
Click to collapse
BenG7 said:
already ordered a charger that matches the s3's specs i.e.
model: ETAOU81EBE
Input: 100-240V ~
Frequency: 50-60Hz 0.15A
Ouput: 5.0V 1.0A
currently only modele available that does it is the ETAOU81EBE.
I'm wating for it.
sorry for double post.
Click to expand...
Click to collapse
I'm facing the same issue. I'm unable to charge via the mains adaptor.
Yesterday I was facing this issue at around 30%. I let the battery drain to around 10% and charging was successful.
However, I'm now unable to charge via AC mains. Please help.
The phone shows "Charging" for a brief 10 seconds period and then the charging signal turns off.
I have tried the same with other chargers eg. Galaxy Ace's charger, in vain. I have tried charging another phone with my AC charger, and it works without a hitch.
question already asked...please search before posting..
http://forum.xda-developers.com/showthread.php?t=1727540
And the answer to the question, software update fixes it in my case but you could try another temp fix, remove the battery from your phone (don't select power off from the phone just directly remove the battery)....keep it removed for a minute or two and the put it back and the plug the charger with the phone still OFF!!
another question on the same topic, i had the same issues with my charger, brought it back to the store and he said he could send it in or just give me a SGS II adapter which is safe (according to him).
would it also be safe to just use the wall adapter from my previous phone the HTC Desire HD? Its alot sleeker in switzerland than the samsung ones
It has exactly the same stats on the back:
Input: 100-240V ~200mA 50-60Hz
Output: 5V --- 1A
clouds5 said:
another question on the same topic, i had the same issues with my charger, brought it back to the store and he said he could send it in or just give me a SGS II adapter which is safe (according to him).
would it also be safe to just use the wall adapter from my previous phone the HTC Desire HD? Its alot sleeker in switzerland than the samsung ones
It has exactly the same stats on the back:
Input: 100-240V ~200mA 50-60Hz
Output: 5V --- 1A
Click to expand...
Click to collapse
It should be safe as these are the same specs as an s3 charger (but the specs of the charger he is given you are not those of an S2 charger: S2's are
input: 100-240V ~200mA 50-60Hz
Output: 5V --- 0.7A
Full disclosure, Tronsmart provided me a unit in exchange for an unbiased review. I've been using this charger for a few days and have to say I'm very happy with it. I have a few Quick Charge 2.0 devices but also have a Nexus 5X and 6P on the way, so I wanted something that could handle any device. The Quick Charge port delivers, rapidly charging my Nexus 6 without any issue. The included 1m cable is very thick, as is the fixed Type C cable. My Nexus 5X showed up today, and officially it will not charge as quickly as the included 5V/3A charger the phones come with as this tops out at 5V/2.4A. That said, the fixed Type C cable registered as "rapidly charging" so while it may not be quite as fast as the 15W wall charger it's delivering enough power for the phone to indicate rapid charge. I'm very happy with this car charger since it offers both the old and new options until Type C becomes more ubiquitous.
kellybrf said:
. . . That said, the fixed Type C cable registered as "rapidly charging" so while it may not be quite as fast as the 15W wall charger it's delivering enough power for the phone to indicate rapid charge. I'm very happy with this car charger since it offers both the old and new options until Type C becomes more ubiquitous.
Click to expand...
Click to collapse
The cable is RC capable, maybe the car outlet not
I used it today after getting device yesterday. Works well and I like it.
Sent from my Nexus 6P using Tapatalk
Late week i got my Samsung fast wireless charger pad
At first my device doesn't recognize fast wireless charging and not even show the toggle switch for turning on fast wireless charging..
It is simply says wirelessly charging but instead of charging..my note 8 drains battery...
I have the same issue. I wonder if our wireless chargers are to blame? I got mine from the Samsung/note 8 promotion.
Try a different USB cable. And what charger are you using?
what make and model is the pad? also if im not mistaken, fast wireless charging needs at least 10 watt/5v 2amp capable chargers.
also check for crappy usb cable, use an other one.
I in the past have found that most def the charge blocks and cables make all the difference in the world with the wireless charge.....
I will second these post
My Note 8 used to charge successfully on the Samsung Fast Charge Wireless station, but now it says it's fast-charging but it actually continues to drain. I have three chargers in the house, using the provided Samsung USB cable, and they continue to charge my Samsung S8 and S7, but the Note 8 does not charge successfully on any of them anymore.