Database Develop

Charging issues

I have a tilt that now will charge from the USB to computer connection, but does not charge when plugged into the wall with my wall charger (an after-market charger that worked fine until today). The phone says "charging" but actually loses battery power .. and after a while the orange charging light goes off.
Any thoughts -- sure is a drag to have to charge my phone through the laptop.

What after market wall charger do you have? Does it use the USB cord to charge? I'm assuming that you plug the USB cord into the wall charger and then into your phone. If so this will not work. The USB cable is only capable of trickle charging. If you are doing anything while it is charging over USB you will use power faster than the trickle charger can provide. You have to charge it with a wall charger that does NOT use the USB cable.
Yes I realize that the standard wall charger uses a mini-USB plug but the internals of the cable are not the same as a data USB cable. The difference in juice it can provide is like comparing a PVC pipe to straw.

I was just using a radio shack iGo charger with a usb tip ... it worked fine until my latest ROM upgrade.

Ahh I see. Yep the charger is most likely bad.

Does Battery Life depend on charging method?

I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?

tmohammad said:
I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?
Click to expand...
Click to collapse
To get full capacity phone needs 5v 1000mA (= 1A) input, which is the charger outputs. If the PC USB output cannot pump that amount it might last shorter....

a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,

mugglesquop said:
a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,
Click to expand...
Click to collapse
My original HTC charger (Model: TC P300) outputs 5v 1A

Interesting. I'll check the HTC charger when I get home.
However, Would this not mean that it would just take longer to charge the battery?
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).

Artyaw said:
My original HTC charger (Model: TC P300) outputs 5v 1A
Click to expand...
Click to collapse
My original HTC charger is at 5V 2A.

What I did notice is that charging form USB takes much longer than charging off the wall.

Sergio PC said:
What I did notice is that charging form USB takes much longer than charging off the wall.
Click to expand...
Click to collapse
It will do, should not effect the overall charge (as long as it is left long enough!)

tmohammad said:
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).
Click to expand...
Click to collapse
Correct, actually water analogy is quite often used here

yes i thought that...
phone charge lasted longer with the mains charger than the usb on pc
and usb pc takes ages to charge full

So I guess we'll all be using our wall chargers now? As the charge is faster and some believe better!
Make no sense to me as to why the charge of the PCs USB cable is not as good as from the wall....
However the slow charge time bit of it makes sense

Car Charger
I have huge problem with my car charger. I use Noname USB car charger, that worked perfectly with my Trinity. Now, when i connect my Diamond it sometimes connects and disconnects the device to USB twice in two seconds and so if the battery is low message about battery fklashes in an out. SOmetimes it does not happen and the battery is charging normally. When i start IGO8 while battery is full and Diamond being charged, it sometimes LOOSES power and after couple of hours it gets out of power even when charged. Sometimes it doesnt happen and the device is charging properly, but very very slowly. When i turn device off, it charges normally. I tried two different chargers and get the same results. But none was HTC original.

It's irrelevent how the phone was charged. If the battery is full, then its full ,and it will last the same period of time irrespective of how it was charged.
Charging rates will vary depending on input current, but once the touch sensor light stays on, then the battery is full.

Charger HTC specifications

What are the specifications of the official HTC chargers ?
I mean not the voltage/amp, but the way the phone identifies that it is its genuine charger and it can draw max power (ie. up to 1A).
Since normally with a real dumb charger via usb it should not draw more than 100mA (or maybe 500mA but even that would not be USB specification compliant without a proper USB negociation).
I guess this is something like 2 pins shorted on the charger cable ? (or some phones use a specific resistance between 2 plugs as identification)
If I want to charge at max current with a usb car charger, what can I do (short pins) ? And what will be the max current it will try to draw ?
The charger and usb cable provided with my Magic both have standard shaped mini usb plug. Though my collegue's HTC Dream came with HTC shaped mini usb plug. Is there any difference exept in the shape of the plug ?

Current drain
Hi
I have charged my sapphire with a power statin and it indicates about 800 mA of maximum current drain.
I made the charging wire myself from a broken charger so i think you can use any car charger.
The htc shaped mini usb is only to indicate it has charging wires and audio wires.

sportster said:
I made the charging wire myself from a broken charger so i think you can use any car charger.
Click to expand...
Click to collapse
Yes you should ba able to, I'm using a Blackberry charge for mine.
Clinton

Charger specs

I'm looking for an extra charger for my nc. What I need to know is what is the mah output of the stock changer so I can get one that had the same rating. Our can someone link me to a cheap stock charger.

The output is 5volts / 1.9 Amperes.
Edit, it is written on the charger btw, you could probably have checked that your self .

Where can I get a charger with the same specs? I don't want to spend $20 but if I have to I will just buy another stock one.
I have a 5v 700mah charger that I bought for my phone. Will that work or is the rating to low?

That will work, it just wont charge as fast...
Sent from my NookColor using XDA app

FYI: I tried using my HTC usb charger with the nook usb cable and it will not charge. The charging light flickers.

Thats what I'm worried about

There is this cable from boxwave with a dongle off the end that you are supposed to use to charge from USB chargers. Why would anyone need this?
http://www.boxwave.com/products/dir...arge-cable-barnes-_-noble-nook-color_4101.htm
Mike

nrune said:
There is this cable from boxwave with a dongle off the end that you are supposed to use to charge from USB chargers. Why would anyone need this?
http://www.boxwave.com/products/dir...arge-cable-barnes-_-noble-nook-color_4101.htm
Mike
Click to expand...
Click to collapse
It looks like one end is for transferring data only and the other is for charging only

I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in

boxwave.com/products/wallcharger-direct/barnes-_-noble-nook-color-wall-charger-direct_4101.htm
That looks like it will do the job perfectly and is only $13

xxosynrgoxx said:
FYI: I tried using my HTC usb charger with the nook usb cable and it will not charge. The charging light flickers.
Click to expand...
Click to collapse
It is charging, just not as fast and the device doesn't notify you of it. HTC usb wall plug chargers are usually 5volts and 1amp, the nook requires 1.9 amps to charge properly.
/mr

There are no spec listed for that charger so it could be a 700mah or it could be a 1.9a charger.

How many of you guys recommending underpowered chargers actually have any electronics background?

The nook charges when connected to a usb socket on a computer, which provides 500ma as a high power device. So your 1000ma charger is twice as good as using a computer.
In order to get 1900 ma, the nook isn't using stock usb stuff in the charger... but normal usb works just fine because, well, the standard requires it to...
4000 mAh battery should charge fully in 2 hours on the nook charger, 4 hours on the htc charger, or 8 hours on a computer...
Sent from my NookColor using XDA app

Good to note that there's a bug on the NC that makes it appear that it's not charging, when connected via USB connection, but it really does charge.

regular micro usb chargers from cell phones will charge the nook even when it says it's not charging.

Novarider said:
I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in
Click to expand...
Click to collapse
The NC will charge from my Droid's power adaptor even though it does not show it to be working. It will take a lot longer to charge with a standard 0.5A USB power adaptor.

In theory, it should take about 4 times as long to charge from standard USB instead of the B&N charger.

Novarider said:
I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in
Click to expand...
Click to collapse
It does work. It's just charging slow so you can't necessarily tell. Also. There will be no indicators on the nook to show that it is charging but i'm pretty sure it is. Leave it plugged in overnight and see.

2A rated USB adapter for under $10: http://www.madvapes.com/2-amp-AC-to-USB-Adapter-ideal-for-Passthroughs_p_2357.html
I own one and can confirm it works perfectly.

[Q] Compatibility with car charger on 1.5A and 5V

Hi,
a friend of mine have gifted to me a car charger that is incompatible with my Legend, because is miniusb (with output: 5V - 1.5A) and the regular charger in bundle with the phone is microusb with output: 5V - 1A.
Can I use the car charger, with a differte cable (the car charger can use usb cables), or the current in output is to much for the phone?

It doesn't actually matter how powerful the PSU (power source unit) is, even if it was 5V / 10A you could still use it... To put it to easy talk, the phone will just take what it needs. The important parameter is Voltage, which is OK - 5V

Dr.Romca said:
It doesn't actually matter how powerful the PSU (power source unit) is, even if it was 5V / 10A you could still use it...
Click to expand...
Click to collapse
That's not quite true. The power does matter, but only in a limited way. The voltage (volts) must match. The current (amps) or power (watts) rating of the supply must be at least that which the device draws.
So in this case; yes, you are absolutely fine. You just need an adaptor to make the plug fit.
My work phone has a mini-USB socket, but requires 1.5A to charge successfully, which is three times as much as standard USB. My personal phone has the same socket, but will charge when connected to a conventional USB host like a laptop, which only supplies up to 0.5A. I can use any USB charger with my own phone, but I can only charge my work phone from its own charger.
Apparently I've not made enough posts to include links, but you can google "Charging Batteries Using USB Power - Maxim" and click on the first link, as long as you don't mind reading a moderately technical document.

Don't nitpick I'm an engineer so I know how these things work end to end, If you have power and a good charger (not meaning the car charger, but the actual charging circuit handling the battery charging inside the phone) you can charge even from 5V / 200mA It'll just take more time, of course you'd have to add more than the phone consumpts, but if you do that you're basically OK...
What you're referring to is USB charging, we all know USB doesn't have to have full 5V but in case of charger, there will be 5V...(possibly even more when open)

I have this car charger with 5V and 1000mAh
http://www.ansmann.de/cms/de/consumroot/chargers-and-power-supplies/universal-chargers/carcharger-micro-usb.html
and i must say it is worse than the Original charger for the Wall outlet from HTC -- it takes about twice as long to charge the phone.
And when i use my phone for Navigation it even slowly discharges the phone - which is truly annoying!
EDIT:
I did some research: on original HTC Chargers the Data+ and Data- pins on the micro-USB-connector are short-circuited to tell the HTC-Phone that it connected to an original charger - only when the phone realizes this, it charges with 1000mA!!! Otherwise it only charges with the USB-specificated 500mA
You can easily check this when you charge your Phone with a 3rd-Party charger, go to:
Settings-> Telephone-Status -> Battery
Here is usually written charging (USB)
only with original chargers you get "charging" (AC)
I opened the connector of my Car-charger and short-circuited the Data+ and Data- --> Now it says charging (AC)
I still have to test if charges faster now, and charges the phone while navigation - because until now it discharges while navigation, despite being connected to the Car-charger.
So to say it short: If you want to quickly charge your phone in your car buy a original HTC Car charger, or short-circuit a 3rd-Party one.

f4b1ck said:
Hi,
a friend of mine have gifted to me a car charger that is incompatible with my Legend, because is miniusb (with output: 5V - 1.5A) and the regular charger in bundle with the phone is microusb with output: 5V - 1A.
Can I use the car charger, with a differte cable (the car charger can use usb cables), or the current in output is to much for the phone?
Click to expand...
Click to collapse
don't worry you can charge your phone with no problem
i have the same 5V 1.2 A ,it's charging with no problem

It's good to have stornger charger. Probably you wil be able to charge your phone faster But it always have to be 5V.