So, this morning I wake up and see that my phone is still at 70%, just like I left it tonight. Upon further inspection, I found out that the charger is the problem, outputting 0.15V instead of 5V, yet there is a spark from the connectors when I touch them with my voltmeter (couldn't check the Amperes because of the pins). I was wondering, has anyone ever opened his/her Milestone 2 charger and what's the procedure? Thanks in advance!
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I am trying to find out what the correct, original charger is for the wizard.
If you have a wizard, can you please look at your home wall charger / ac adapter and tell me what the specs are? Is it 500mA, 800mA, 1A, something else? It should say directly on the charger somewhere.
Also, have you ever had any problems charging the phone with it. There is a problem with the travel chargers (500mA) charging a wizard if the battery is completely empty - it has trouble starting the charge (charges fine if it didn't die completely). So - if your phone battery completely dies because you did not charge it at night or something, can your charger get it charging and running again without any issues?
That's it! Just trying to find what the original charger is so I can order one like it. I have found 800mA chargers easily but I was thinking the original was 1A instead. Not sure though...
Thanks!
Only 1.00 amp charger is capable to charge a completely discharged (dead) battery,so get a 1A wall charger,you won't regret.Every Wizard device is supplied originally with a 1A charger,so thats what I have,never had any charging problem,even if sometimes gets lower than the required retention charge,it gets the battery charged.
That's what I thought...I'm just having the toughest time finding those online...It seems nobody has an original charger or even one with similar specs...They are all too weak...the 1A chargers I have found have been 5.5V and not 5V.
Any ideas on where to get an original? It seems like 5V 1A USB charger would not be so hard to find but they are all too weak or don't list the specs (in which case they may not be the right one). Perhaps there is a manufacture part number on your charger? If so, maybe I can do a search for that part number and find it.
Superman859 said:
That's what I thought...I'm just having the toughest time finding those online...It seems nobody has an original charger or even one with similar specs...They are all too weak...the 1A chargers I have found have been 5.5V and not 5V.
Any ideas on where to get an original? It seems like 5V 1A USB charger would not be so hard to find but they are all too weak or don't list the specs (in which case they may not be the right one). Perhaps there is a manufacture part number on your charger? If so, maybe I can do a search for that part number and find it.
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Well,I can give you charger details which I'm using ,I don't know if its available online,but there's no harm in trying,You can try e-bay online,here they are :-
DELTA ELECTRONICS INC
AC/DC Adapter MA0614
INPUT : 100-240-200mA 50-60Hz
OUTPUT : 5V...1000A
Good luck !
Hi everyone. I bought Niki the other day on ebay with broken screen. It is fixed now but notice that AS does not work nor I can charge the battery. The USB connector is fine and it is not de-soldered. Forgot to mentioned it is running custom OS from here and is unlocked.
Wonder if anybody has any suggestion what it could be?
Thanks
if charger is plugged in without the battery I get 2.2 V between pin 1 vdc and pin 4 on bat connectors. Does that mean it should be charging?
ok....does anybody know if I can charge the battery direct to selectable voltabe PS? guess I am asking what is the charging voltage?
anyone......
Can someone please take the battery out and measure out pin 1 and 4 accross while charger plugged in. Need to know what is the charging voltage. My shows 2.2 V which is not enough. Guess second question is has somebody managed to find what is causing this fault. Must be a common fault as it use to get very hot during the charge.
anybody? is there any electronic schematics for power circuit for this model?
Just measured it. On my NIKI100 it shows 2.80V on the outer pins when I dont have a battery connected but having the USB connected. When the battery is in and has USB connected it is charging with 3.95V.
Long story, but I bought a used Fascinate without the stock charger.
Could someone install, or hopefully already have, the "Battery monitor Widget". Then plug their Fascinate into the stock AC charger or stock car charger (NOT the USB on a PC), and let me know what the usage (ma) reading is on the widget.
More of the story. Basically, I know that at least on older HTC devices they would pull more charge/operating power from a non-USB connection. Actual USB is limited to 500ma load, so they had a system that kept the current low on USB and bumped it up for non-USB. All of the non-stock cables that I have show a very low charge rate on the Fascinate. It in fact runs the battery dead while on charge and I use the phone with GPS software.
i can tell you the factory charger is putting out 5v at .7a(700ma).
Mylt1 said:
i can tell you the factory charger is putting out 5v at .7a(700ma).
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Thanks, it is good to know that they stick with 5V. But it just means that it can put out up to 700ma. I suspect it is using about half of that.
If you can cut open the wires and insert and ammeter in series, that is what I need to know.
edit: nvm ...
Found it. I have been searching for this for a couple of weeks and just now stumbled on the right search keywords.
For anyone that wants to know.
The Fascinate appears to pull about 350ma from the 5 volt supply normally. But, if you short out the USB D+ and D- lines in the charge connector, the charge current goes up to about 600ma.
That will help me not have a dead battery when using the GPS.
Oh, as an added bonus, you don't get the USB / Debug notification.
So yesterday, my old car's voltage regulator went haywire, and blew the car's main fuses after a couple of seconds.
I was charging my N4 during this incident with a cigarette lighter thingy and was holding aprox. 10% batttery charge.
The N4 is now 100% unresponsive. No amount of pressing any key combination for any amount of time does anything at all.
I have also tried charging it with a generic USB charger for a couple of hours, to no effect.
After that, I tried charging it with my computer's USB3 port for a couple of hours. This warmed up the phone a bit on the back, so it seems the ingoing current is doing something in there.
I am not getting a red LED indicator as most other people seem to be getting.
i fear something important was simply fried inside the phone, but I don't want to give up yet!
- Does anyone have any ideas what else I could try out?
- Are there maybe some small fuses inside the N4 that might be burned due to the voltage spike? Could I maybe replace or bridge them?
- could replacing the battery maybe revive the phone? If so, how could I test if getting a replacement battery will be worth it? Maybe temporarily wiring a compatible voltage to board?
http://www.reddit.com/r/nexus4/comments/29gkfj/usb_power_surge_killed_nexus_4/
Does this help?
LooieENG said:
http://www.reddit.com/r/nexus4/comments/29gkfj/usb_power_surge_killed_nexus_4/
Does this help?
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Cool! I must have missed that the USB charging stuff is on a seperate board when i stepped through the N4 teardown!
Do you know if wireless charging goes through this board, too, or would it be using a separate circuit - i.e. should I head over to a friend's and test if I get SOME reaction from the phone when wirelessly charging?
Also: what worries me is that, as i mentioned, the phone's back is getting quite warm when charging it via USB3, so I am afraid that the charge is actually getting to the battery (vs. being stopped at a burnt fuse)
Hi everyone;
I've having an interesting time with my nexus 7 (2012 wifi 32gb).
Before I left on vacation I couldn't get the thing to charge. Looking at the usb port I thought it had become to damaged to make a good connection. So while I was away I ordered a new port assembly. Installed that and still no charging.
Oh the battery cell voltage had gone down to 2.2V so it's in a sleep mode. No problem used a proper lion charger to trickle charge it back to life then further to about 3.8V.
At that point it boots up though the optimization took the charge down to 2% so couldn't do more testing but clearly it worked just fine. However the thing won't charge. Plugging it in to USB it does detect the connection but does not draw any current (as shown by a usb voltage/current monitor). It will show the charge screen, go through 3 cycles of the battery filling animation then shut off.
I check and the voltage is getting from the usb cable into the connector. I traced the ribbon cable from the IO board up to the motherboard and at the other end I also get a nice 5V reading. Clearly the connection from the USB to the device is being made no problem.
At this point I am thinking that maybe I blew the charging circuit. When I was orignally trying to get it to charge before leaving I was applying all kinds of stress to the connector to get it to charge and there was a few times where I think I shorted it (usb monitor showed >3A and the device reset).
Anybody have another theory?
At this point I can't really use it as charging the cell externally is dangerous and not convenient. At this point from what I have seen with my testing and on here if I want to use it I would have to apply 5V to the battery connector (sans battery) which I haven't tried yet.