yashsingh1/xdaforums huggingface dataset:
[Dell Streak 7] wptski:
I don't know why your various chargers didn't work but it doesn't seem to be because of current. It didn't charge at 2A or even close to that.

If what your saying correct, why was I able to charge at less than 2A then? Could this be a ROM issue? I only had Froyo for a few hours but I've read that it didn't support USB charging which came with HC but it only charges with the S7 OFF.

It's possible that the demand went higher and I just didn't see on my current clamp meter. I'll have to try a current clamp and a scope to see if I missed a peak level.

Also what we are refering to as the charger might not be a charger but only a power supply and the actual charging circuit is in the S7.

I did notice one odd thing though. The green LED lights up at around 90% battery level and it's still charging. I downloaded a battery app which read the same level.
[Dell Streak 7] cdzo72:
You were able to charge because your charger was CAPABLE of outputting 2A at least... try charging with one that CAN'T put that out and you should find that the Streak will not charge, on ANY ROM has been my experience, custom or stock
[Dell Streak 7] wptski:
Capable is the magic word here. The wall wart isn't putting out 2A from what I've seen, unless it does for a split second at the start which I'm going to look into.

Most wall warts at whatever their rating is put out a higher voltage with no load and slightly higher than its marked voltage under a load. If it required 5.35V@2A max., you used a 5.35V@500mA, S7 needs more current, the voltage would decrease. What's been stated here might be that the voltage was being pulled down and that's why the S7 wouldn't charge, not "really" the 2A issue.

I have a battery pack/cell load testing device used on RC stuff that connects via USB port for its graphic software. There were issues with certain Dell laptops that had a low voltage at their USB ports.
[Dell Streak 7] DCoop:
Maybe starting fully charged would help?

I have the OEM T-Mobile car charger and I've found that if I have a full charge before plugging the Streak into the charger it maintains a full charge for as long as I'm driving/using it. Otherwise, with a less than full charge I've watched it slowly discharge even though it's plugged in and is charging.

FYI: I also have a top of the line car charger for an iPad2 that charges the iPad no matter what charge level I plug it in. This iPad charger has a USB port which I have plugged the Streak USB cord into and it also doesn't keep up with the Streak's discharge if the Streak isn't a full charge to begin with. Kind of strange because I would think the iPad would draw more than a Streak. (the iPad isn't plugged in at the same time the Streak is charging)
[Dell Streak 7] wptski:
The S7 must run some check before it tries to charge . Whatever it is the OEM supplied power supply passes the test.

What's the specs on your two power supplies?
[Dell Streak 7] Mysticales:
Just remember if you dont have the same 2A for charging in the car. You cannot charge the streak while its TURNED ON. Same with USB charging, just turn the streak OFF, then charge. It will work. =)

Otherwise, Id get a DC to AC converter for the car, plug in your normal adapter.
[Dell Streak 7] RCounts:
I picked up a 2-port USB cig lighter adapter with each port rated at 5.35v and 1.1A.

I already had a Y-cable with 2 male USB plugs to one female USB socket (designed for powering a USB HDD or other device that draws more current than a single USB port can supply).

I plug the male plugs of the Y cable into both ports on the cig adapter and then plug the S7 cable into the female plug of the Y cable and it works beautifully.
[Dell Streak 7] wptski:
I don't think it has anything to do with the 2A power supply, the charger is in the S7. I believe the S7 checks for the data lines and will then know that your using the OEM power supply, otherwise it works differently.

The S7 draws the same 430mA wether it's ON/OFF when connected to a PC's USB which is the same as not charging and charging. Anotherwords drawing the same current either way which means that it could charge but the S7 isn't letting it. This may be because they don't to overload and/or burn something up in your PC's USB circuit.

If one could simulate the OEM USB port power supply, a <2A would work.

The green charging LED turns ON or fully charged when the battery shows only 90% full.
[Dell Streak 7] DCoop:
What's the specs on your two power supplies?

The t-Mobile car charger: 5.0v 1A

Rocketfish iPad2 charger: 5.0v 3.1A

Again, if I take the Streak fully charged to the car and plug it in the light stays green and the battery maintains it's 100% charge for hours. (according to 2 battery widget apps)

I also have seen the green light on with a battery charge percentage in the mid-90's.
[Dell Streak 7] Mysticales:
I dont know, but I DO know this, I once used a regular ac to usb adapter. One that is fine for EVERY cell phone I worked with and my zune.. I plugged in my streak 7 to it.. and the sucker was burning hot enough to give me abit of a plastic smell. So using something less then 2A seems to burn items up when its turned on. Maybe cause when its turned on, its trying to draw more then it can or supposed to. Even on PC. With it on, it shows charging" but your battery will drain.
[Dell Streak 7] wptski:
Using the OEM power supply, booting the S7, it draws just over 1A and drops off while it charges to 100% as a boot up drops it below 100%. After a bit, it's drawing 430mA with the green light ON. Unplug it, plug into a PC's USB where it draws the same current with the green light OFF. If you go back to the OEM, it'll pop that >1A again.

I've read that as of 12/10, USB 2.0/3.0 is 1.5A capable and allowed to go to 5A. The amps are there but the S7 doesn't want it. It can't run and charge at 430mA.

It seems to stay at 99% at 430mA while connected to my PC but I'll have to leave it on there longer to see if it discharges. I think from what you guys have said, it should. Very confusing indeed.
[Dell Streak 7] DCoop:
Tonight I plugged in the Streak using the t-Mobile OEM charger (5.0v 1A), the battery level was around 50%. The dang thing charged on my 20 minute drive home, the battery level increased during the drive, the battery app showed a green "charging" instead of "discharging" as happens most of the time.

Strange stuff. I thought I had figured out that if the battery was 100% the car charger would maintain that percentage but if the percent of charge was lower the OEM charger couldn't keep up/charge.

I don't know...what's happening.
[Dell Streak 7] wptski:
Was your S7 ON/OFF when you plugged it in? Booting up while connected to the OEM power supply draws a higher current and I think this is the time that the S7 checks/tests for what power supply is being used to determine if it charges or not.
[Dell Streak 7] DCoop:
The S7 was on when I plugged it in at around 50%.

This same charger has been plugged in several times and the battery app showed a "discharging" message and sure enough the battery percentage dropped as I drove. The yellow charging light was on.

I just remembered another oddity. I've had the S7 turned on, less than a 100% battery level, plugged it into the car charger and the yellow "charging" light wouldn't come on and the battery showed a discharge. One day this happened and I turned the S7 off, plugged in the charger, the yellow light came on, and I booted the unit. The light stayed on and it showed a charge.

Is this all related to some internal logic in the unit?
[Dell Streak 7] wptski:
Yes, I assume some internal logic that doesn't seen to be very logical!
[Dell Streak 7] wptski:
DCoop:

Here a compact one that's rated at 2.1A: Kensington PowerBolt Micro USB Car Charger for Kindle Fire. Who knows how this one would work?

Other than charging, what's your in vehicle S7 usage comprised of? GPS Navigation?

Just tried my USB port in Ford Sync System, same as a PC, when ON, no chargeing.
[Dell Streak 7] wptski:
Must have missed your post. The S7 charges while powered ON? If so what brand, model number, etc. is your adapter?

I've seen two port models that were 2.1A and 1A but never where both ports were rated the same.
[Dell Streak 7] DCoop:
I use the S7 in my car and when Flying for GPS navigation.

There's something odd about the charging circuit logic. Yesterday, with the Streak turned on, I plugged the S7 into the house/wall charger at 40%, checked it a half hour later and the yellow charging light wasn't on and the battery percentage had dropped. I turned it off, plugged the wall charger into the S7, turned the S7 back on, the charging light came on and it charged until 100%.

This is getting annoying because when I use this unit flying I need to be able to depend on it not using up it's battery charge and going black on me at 10k feet. :eek:

I'm using the t-Mobile supplied OEM car charger and the thing should charge the battery all the time, not after having to jump through numerous off/on hoops.
[Dell Streak 7] wptski:
Yes, the S7 seems quirky. I can see your concerns. What GPS Nav app are you using? I suppose that it's not a free one?

I was looking at GPS Nav apps. I got one free one but my latest McAfee Mobile Security app update keeps on opening the App Protection Screen. Something newly added which I'm in contact with them about right now.

I did run across something about device USB power supplies having the data pins shorted so it could differ between a power supply and a PC USB port. I checked the OEM power supply and it isn't shorted. It didn't read 5.35V as listed but 5.27V no load with a Fluke 87V.

One can read numerous Amazon reviews about car USB power supplies not working properly with various devices.
[Dell Streak 7] stevedebi:
I have a 4000 mA external battery charger that puts out enough to charge the S7 while being used. It is only good for one charge, but it would allow you to get safe to earth within the 4 hours it takes to discharge.

http://www.amazon.com/Belkin-Portab...DN50/ref=sr_1_1?ie=UTF8&qid=1328075565&sr=8-1
[Dell Streak 7] DCoop:
The Flying GPS software is called Avilution, they have a website.

The more I monitor the S7 plugged into car chargers and the wall charger the more random either charging or not charging becomes. Yesterday I used the iPad2/Rocketfish charger again and it charged the S7 while driving. The Streak was already on when I plugged it in. Remember in the past I could sometimes get it to charge with either of my 2 car chargers if I turned the unit off, plugged it in, got the yellow charging light, then booted the S7 on.

It's strange but I'll put up with it, I got the Streak for $150 and it's the best purchase I've made as far as dollars spent for a device.

---------- Post added at 10:59 AM ---------- Previous post was at 10:53 AM ----------

Thanks for the information, I'll look into it.

Have you had any problems using your external battery with the Streak 7? I was wondering if yours showed any of the odd charge/won't charge tendencies.

thanks,

DC
[Dell Streak 7] wptski:
DCoop:

Thanks for the GPS Nav info.

Okay, I was the guinea pig! I got a Kensington K38224US which is a compact 2.1A unit that comes with a iPad cord. I didn't try it in my vehicle yet but used a Radio Shack 120VAC>12VDC cigarette socket adapter which is only rated at 1A.

I ran my S7 down to 50% charge, plugged it in, started to charge at 850mA-900mA just like the OEM and booted the S7 up. During boot up the charging briefly stops for about 15-20 seconds, resumes and continues to charge.

Here's a link to the Power Bolt Charger at Amazon which I got in two days for $7.99 which is $2.00 cheaper than I paid!

Kensington-K39224US-PowerBolt-Charger

There is the same unit packaged with a Kindle Fire cord, K39522US but they want $24.99 for it.
[Dell Streak 7] stevedebi:
No, but I've only used it a couple of times, to check out the functionality.
[Dell Streak 7] wptski:
This Trent-iCruiser-IMP1000 is cheaper and 11,000mA. I believe that I saved it after a search in this forum.
[Dell Streak 7] stevedebi:
I don't know, I haven't used that one. Does it charge the S7 while it is being used?

I didn't want a big one either, the one I mentioned is slim.
[Dell Streak 7] wptski:
I don't remember if that was mentioned but it sure has the capacity to.
[Dell Streak 7] stevedebi:
It probably does, but it is not the capacity but the discharge output; it has to be 2000mA to charge a S7 (I think).
[Dell Streak 7] wptski:
Nope, I've measured the current draw of the S7 and during boot up it draws the highest, a bit over 1A. Any other time it's below 1A.

The OEM power supply is overrated for the S7. The S7 only draws what it needs and it doesn't need 2A.

I'm unsure how the S7 determines if it's connected to a PC USB port which it only draws around 450mA from.

If any battery pack is rated at 11,000mA, it can deliver that 11A unless they have some special circuit to limit it. Just like your 4,000mA pack can charge the S7.
[Dell Streak 7] wptski:
Tried the TurboBolt in my vehicle. It worked exactly as with my adapter mentioned above meaning during bootup, charging stopped for that 15-20 seconds and resumed again.

I started to plug it into my rear Power Point on the back of my console but it was so tight that the plastic around it was flexing. If I continued, it would be there for good! :eek: It was looser in the front Power Point. There's only a small thin edge to grip and no need to bury it all the way to make contact.
[Dell Streak 7] DCoop:
The specs on the Kensington are the same as my Rocketfish iPad2 charger which I reported on a few days ago. How are you monitoring the the charge before you boot the S7 up? "80mA-900mA just like the OEM" etc.

DC
[Dell Streak 7] wptski:
Your earlier post states 3.1A for that one.

I use an old USB retrackable extension cord that would lose contact at times which I seperated two of the wires easily since it's a flat cable. I use that with a pretty pricey AC/DC current clamp meter in the 4000mA range. I zero out the meter and clamp around one single wire.

I let it do a complete charge while using the TurboBolt. During bootup it peaks for a few seconds at over 1A, after that there is a time when it does go as high as 970mA, toward the end it drops to around 400mA, when completely charged(100%) not the green LED which comes ON at 90%, it drops to 150mA, stays there and never goes to zero. I've checked after 3-4 hours and it's still at 150mA.

I have three RC type chargers that'll charge any type cell or pack limited by the number of cells. On Li-Ion cells or packs, all drop to zero when done. A trickle charge normally isn't used on Li-Ion. At 100% charge, the S7 still draws 150mA for some reason. :confused: On Ni-CD or Ni-MH, one can leave a .1C or 1/10 of a cell or pack's capacity charge running forever. I heard that one company had one going for two years without any damage.

BTW: My old original Motorola Razr which charged on my old laptop which had installed software for it won't charge on my desktop PC USB port, S7 charger or PowerBolt. I guess it's before phones became Smart!
[Dell Streak 7] DCoop:
You are correct, the iPad charger is 3.1A, I'm dealing with too many chargers to keep them straight.

I have a battery monitoring app/widget called "Battery Monitor Widget". It has shown that the OEM wall charger reduces to a "0" charge when the S7 is asleep and fully charged. This is very similar to the SBC kernels I've used for my HTC Evo in the past. The Evo charger with the SBC kernel would continue to charge at 2-4 mA overnight while the screen was off etc.

I used the Rocketfish charger today and it charged the Streak while I was driving. It was at about 60% charge when I left the house. I'm going to try the t-Mobile OEM car charger again tomorrow to see what it will do with less than a full charge.

DC
[Dell Streak 7] wptski:
It might not be charging the battery but it's still drawing 150m A for some reason. You mean that your app shows charging % instead of % of capacity? The app I use shows the other way.

I tried that same app and the graph always shows zero charging. Is that the free version from 3C?
[Dell Streak 7] DCoop:
Yes it's the free version, click on the History tab to get information on charge percentage etc.
[Dell Streak 7] wptski:
Is that where it shows a graph also? I used it for a short time but on the graph page it showed zero charging when it was! Have to try it again, I guess.
[Dell Streak 7] DCoop:
Yes, give the app another try. You can customize the free app by entering the size of the battery in the device you are using. That will affect the readings the app shows.

I never pay attention to the graph page, the History one is where the info that I care about is displayed. With the S7 in sleep mode the app continues to monitor and record, this is how I learned the kernel charges to 100% and once there, shows a "0" charge. This is pretty nice as I think you mentioned you compiled data showing a continued current draw with the Streak off. (at least I think you wrote it was off)

best,

DC
[Dell Streak 7] wptski:
I got it again, added pack size and charger capacity.

After running on battery a short time down to about 94% and letting it charge twice while ON. In History at 100% battery level, it has shown, 659, 329, 18, 9, 4 and 0mA charging rate. Not sure if the interval of five minutes can be changed. Ay one point, I plugged the charger back in and after five minutes the S7 showed charging but BMW showed it still discharging at a hefty rate at a lower battery capacity.

How can BMW report a charging rate of 0-659mA on the same 100% battery level? Other than that one time BMW reported the same battery level as the S7 and another battery app that I have. The voltage is at 4.202V at 100% which is full also.

BMW does save the history as "battery_history.txt". Here's one part that I question.

2012/02/07|08:56:03 PM|0mA|100%|4202mV|72.3ÂºF|1|1

2012/02/07|09:01:03 PM|0mA|100%|4202mV|72.3ÂºF|1|1

2012/02/07|09:06:03 PM|0mA|100%|4202mV|72.3ÂºF|1|1

2012/02/07|09:09:39 PM|0mA|99%|4107mV|91.7ÂºF|1|0

2012/02/07|09:14:39 PM|-204mA|98%|4041mV|94.2ÂºF|1|0

2012/02/07|09:19:39 PM|-566mA|96%|3997mV|94.6ÂºF|1|0

2012/02/07|09:24:39 PM|-660mA|94%|4186mV|94.1ÂºF|1|2

The -660mA was when it was actually charging and showed so in the graph, also the S7 showed it also. The increasing battery level shows that it's charging yet it's in a minus number or discharging for 15 minutes.
[Dell Streak 7] DCoop:
You can change the interval all the way down to 30 seconds if you want. For months I used 1 minute but now have it at 5 minutes.

I can't explain the -600mA reading when it was charging. The more I do tests on the S7's charging scheme the more confusing it gets. Yesterday I plugged it into the Rocketfish charger and the Battery widget showed it plugged in with a Discharge, no charging light showing on the unit. Out of frustration I unplugged the charger at the 12v source then quickly plugged it in and the charge light lit up and it began to charge.

It's strange, sometimes the yellow charging light comes on when plugged into the 12v charger but it actually isn't charging and is discharging. I keep going around in circles with this thing and I can't find any definite fix. It's hit or miss whether I'll get a charge UNLESS I take a fully charged S7 to the car or plane, plug it into the charger before turning it on, and then the charger maintains a full charge showing "charging" and the green light stays lit and never changes to yellow.

DC
[Dell Streak 7] wptski:
I wanted to check if it's a slight voltage drop that confuses the S7 at times but the old USB cord that I seperated the wires on, its fine stranded wires are coated with something so I can't make contact.:mad: Maybe I can scrap the stuff off with a sharp blade from a knife.
[Dell Streak 7] DCoop:
Good luck with the scraping!
[Dell Streak 7] wptski:
We use to strip wire with our teeth when I was a Navy Electronics Tech.:eek:
[Dell Streak 7] DCoop:
Yeah, but back then you were getting paid the big bucks!
[Dell Streak 7] Mysticales:
You forgot the "While walking barefoot through snow, and LIKED it" =p
[Dell Streak 7] wptski:
No snow in WestPac!:p
[Asus  Eee Pad Transformer Prime] gixie:
Hey guys

I was trying to see if the Prime can power up my Galaxy S2 via the dock and as soon as I connected it, the Gallery app came up, the phone went into Kies mode, but the prime became unresponsive.

What is it supposed to do?

BTW, it did start to charge my phone.

Thanks
[Asus  Eee Pad Transformer Prime] wpghtc:
if you put the phone into mass storage mode, it all charge and you can browse the phone.
[Asus  Eee Pad Transformer Prime] Buff McBigstuff:
Would this work with an MTP phone? I don't have a dock yet, I'm waiting for champagne docks.
[Asus  Eee Pad Transformer Prime] charliexwl:
wpghtc, did you actually do that? I want to a USB to address files on my phone from my prime, but i get no response when its connected. The phone is in mass storage mode too
[Asus  Eee Pad Transformer Prime] cfaberlle:
I just tried this with my Galaxy S2 but it does not work even in storage mode. It does charge the phone but no access to the files.
[Asus  Eee Pad Transformer Prime] ryanbmw51:
Just Bluetooth transfer or I like to use my cloud drive as a "middle man". There are alternatives. However what you are trying to do.... this seems llike something that will work in the future. IMO

sent from my tricked out Infuse 4G or Transformer Prime...
[Hero CDMA Q&A, Help & Troubleshooting] fargond71:
So here's my story. A couple of weeks back I had started to notice that my phone wasn't ringing when people were calling me. Through a bunch of troubleshooting found out that it seems to be my google voice account that is causing my calls to go directly to google voice. I also use google voice on my tablet as it is a lot nicer to do stuff on the bigger screen. When i looked under the settings found there was something about (Sorry this is weird) "dogfood" settings. When i clicked on it it said something about sending feedback. I backed out from there. (A little freaked out as to what that might do.) Did not have this "setting" on the phone. Needless to say I un-installed wiped the tablet. Did the same with the hero. Put new roms on both and I would be able to receive calls for a short period of time. Then after a couple of calls it would start to send calls to voicemail again and I wouldn't be able to make calls out. So finally took google voice off of both the tablet and phone and disabled google voice and now I can make and receive calls.

My problem is really like google voice and want to use it. Anyway around this? Part of the reason that I'm asking is that I see Matt uses google voice too and was wondering if anyone else had been having this problem. I don't know if there is any other app that works similarly if anyone has any suggestions let me know.

Sorry for the long post but its kinda weird and didn't wanna post "Google voice f-ed my phone" and then have to walk everyone through the troubleshooting I had already done.

Thanks.
[Hero CDMA Q&A, Help & Troubleshooting] Ebaum1:
OK this is going to sound stupid and quite obvious but..in the phone app> menu>more>settings>do not disturb. Is that off or on? :)

I have been using G-voice for a while now and I have never had any issues. But I do have that "dogfood" under menu on the phone app.
[Hero CDMA Q&A, Help & Troubleshooting] fargond71:
I remember checking on that a few different times because I remembered reading about it some time ago. I don't think that was it. It seems like someone was having trouble with that on the with the aosp/cm thread a long time ago. I was concerned with that dogfood thing but maybe it is nothing. just google having fun.

I will check on the settings thing and flash to DX and test some more.

Thanks for the info. Will let you know.
[Hero CDMA Q&A, Help & Troubleshooting] NineInchNails:
:) I have a good question... When you installed Google Voice at the setup screen did you hit Next at the first screen that mentions Sprint integration? This is most likely what is causing it sir. Try reinstalling GV. Then open it. When that prompt comes up again hit Skip this time. Then following the remaining instructions. It should work perfectly after this.