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I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.
Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
I don't think it depends on the current.
With my factory charger, if I insert the charger in and kinda pull out one side of it, it will think it's a computer and I can "mount" my sd card. so it might be a certain way the connectors touch inside
saint168 said:
I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.
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It depends on the charger, but yes, the phone for the most part can tell the difference. It has to do with the voltage that is put out.
Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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It has nothing to do with amperage (unless it is under 500) and everything to so with charging source. Wall chargers basically short the data wires to indicate AC charger and car chargers do not.
There is a thread in accessories forum discussing this and mods to get full charging out of car chargers. I did it by modding an extra cable. My car charger puts out 1 amp but the phone never draws more then ~ 750 mah.
Sent from my MB520 using XDA App
Dungeon47 said:
Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.
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Every time I read one of your posts, in my head is McGyver's voice. Hearing him narrate the xda forums is hilarious.
From a phone
The phone can take up to 1000mA of charging current. But only if it detects it is on one of its supported AC chargers. Draw more than 500mA on a PC USB port may damage it. So, there is special wiring needs to be done for the data PINs on the USB port. That's why for generic car charger and wall chargers, it can't only assume it is PC USB port and charges at a slower pace (500mA). You will need the Samsung AC or Car charger to charge at higher current. I managed to mod one of car charger to be recognized as AC charger (no USB prompt). And you really need it because if you're using the phone as GPS navigation device, 500mA won't be able to sustain it (battery will keep be drained). You need 700ma or more.
It also depends if you have your USB connection set to a default if you will get that pop up when you connect it to any other than an AC charger.
Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Yes it does and is sensitive. I have been using a BT headphone charger and I would be perplexed that my phone showed 100% but pull the plug and its at 87% every morning AFTER recalibrating the battery.. LOL
Decided to use the Samsung Charger and no such issues. Needs those extra Milliamps.....
Anyone else having this issue? Went from completely dead 0% to now 17% in 2 hours! Maybe it's a bad battery? Used to charge from 0% to full battery in about an hour or less
Sent from my LG-P999 using XDA App
Yeah I have noticed that, it's iffy sometimes it charges normally on my pc then there times when it just crawls like today it was at 57 % for like 1 hour I rebooted it thinking something was wrong.
My phone was very hot tho maybe that had somthing to do with it idk
Sent from my LG-P999 using XDA App
never use your micro usb cable connected to your computer to charge your phone. If your phone is ON and playing music or something else, that will still run down the battery even though it is connected to the computer. Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that. Even cheap chargers from China that are 350mA - 500mA will take forever to charge your phone. I use spare Blackberry chargers that are less than $5 and offer 700mA. They are great and cheap.
http://www.amazon.com/BlackBerry-Fo...PN0S/ref=sr_1_1?ie=UTF8&qid=1309054355&sr=8-1
grenademasta said:
never use your micro usb cable connected to your computer to charge your phone. If your phone is ON and playing music or something else, that will still run down the battery even though it is connected to the computer. Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that. Even cheap chargers from China that are 350mA - 500mA will take forever to charge your phone. I use spare Blackberry chargers that are less than $5 and offer 700mA. They are great and cheap.
http://www.amazon.com/BlackBerry-Fo...PN0S/ref=sr_1_1?ie=UTF8&qid=1309054355&sr=8-1
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It's very similar to the TF101; it seems most Tegra devices use a charging cable more like USB 3.0 than 2.0, which pushes a lot more power and charges the device quickly but when plugged into a 2.0 port the charge slows to a crawl. USB 2.0 simply isn't designed to push the amount of power these newer devices require.
When I try this it will not charge my phone. I tried on several computers at home and work Pc's. It actually drains it.
I wonder why that happens???
Not a big deal.
No problem, I always have to take my charger everywhere I Goto be safe.
All computers using USB 2.0 or USB 2.0 add-on cards.
Sent from my LG-P999 using XDA Premium App
grenademasta said:
Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that.
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Yes, a fraction of 0.5. USB ports can provide up to 500mA.
I just charged mine at work using a USB cable plugged into my monitor. I noticed that trying to charge it off my laptop doesn't seem to get me anywhere. It might require using a powered hub or something similar to get enough juice.
I usually slowly lose charge when plugged into the usb at work. Granted the screen is almost always on and the phone being used.
I've noticed the charge rate for differs depending on the usb charger rating.
For example, on my laptop usb, it charges very very slowly. but when plugged into my desktop, it charges just very slowly. So they must have different current ratings.
When using my eee transformer usb plug ([email protected]), it charges the phone very fast, like under 2hrs. When using a usb charger meant for a blueant headset ([email protected]), it takes like 4hrs to charge. Think the stock charger is at [email protected]
I use Battery monitor app to monitor my batt usage/drain. Haven't really paid attention to the battery gain, but from looking at past history graph, think when plugged into the laptop, it supplied like 5-15ma of juice. When plugged into destop it looks like at 55-400ma. The transformer usb provides up to 1200ish ma, and the stock gives 800ish ma.
Now does using different rating chargers affect the battery discharge rate and health of the battery?
Just because a USB port on a PC says it'll output 500ma doesn't mean it will, it's all up to the software. If your PC or phone is cranky and doesn't communicate properly, your computer's USB port will default to 100ma, and you can't charge off that
Mine charges fine on USB unless I'm trying to use it, then it is pretty much break even.
After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
k00zk0 said:
After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
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Phone can only draw as much power as the charger supplies, up to something like 1 amp. If the charger supplies less than that, then it only draws what the charger supplies. If the charger supplies more than 1 amp, then it will still only draw the 1 amp that it needs. The more important thing to ensure is that the voltage of that charger is the same as the stock charger.
G2X CM7
squish099 said:
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
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It's strange we got different chargers. This one outputs 4.8V at 1.0A. It also squeals when the phone is in standby. If i wake it it stops humming. Model STA-U13WR2. I wonder if charge rate has to do with anything bad? When the charge says completed and it is plugged into a USB port, it will charge for another hour at times. Makes sense since a high charging rate will cause the battery voltage to spike and read as if the charge is complete when it's still got room.
Hey,
I noticed that the droid charge has a bigger battery but it take a lifetime to charge.. is there a better charger I can get other than the one that came stock with the phone? Please let me know. I would really appreciate it.
The stock actually charges fast compared to USB...use a higher amperage charger with the stock usb cord (so it doesn't limit to 500ma). I use my Galaxy Tab charger...works great
Sent from my Droid Charge running GummyFroyo 1.9.1
kvswim said:
The stock actually charges fast compared to USB...use a higher amperage charger with the stock usb cord (so it doesn't limit to 500ma). I use my Galaxy Tab charger...works great
Sent from my Droid Charge running GummyFroyo 1.9.1
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Well I am using the USB in the pc and the battery has not moved once notch ... has to be the rom (gingerbread) or the combnation of usb cord and charger.
stepinmyworld said:
Well I am using the USB in the pc and the battery has not moved once notch ... has to be the rom (gingerbread) or the combnation of usb cord and charger.
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PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.
streetlightman said:
PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.
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Correct about the pc charging; it only runs at .5 amps (500 ma) while the stock charger has 1 amp. However, the car charger really depends on what kind you're using. I use a 2A and it charges fine.
Sent from my Droid Charge running GummyFroyo 1.9.1
streetlightman said:
PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.
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ok cool. so i could just look for a charger will higher voltage being delivered. I hope i get the right one that is compatible to the droid charge. Dont wanna burn the battery out etc
No, not voltage. Amperage. Big difference. Just get a charger with a USB port and a high amperage...I don't think you'll find a higher amp charger specifically compatible with the Charge.
Sent from my Droid Charge running GummyFroyo 1.9.1
kvswim said:
No, not voltage. Amperage. Big difference. Just get a charger with a USB port and a high amperage...I don't think you'll find a higher amp charger specifically compatible with the Charge.
Sent from my Droid Charge running GummyFroyo 1.9.1
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ok thanks!
You need a charger that won't be seen as a USB connection on the phone. If the phone thinks that it is plugged into your computer, it will charge at roughly half the rate of the wall charger. Wall charger will charge at ~700mA I believe, and the USB/Computer connection will charge at ~400mA. You can find the actual numbers in the power regulator driver in the kernel source though.
I have a motorola 950 amp car charger I got off amazon for $5. It works well but if the screen is full bright and I'm running navagation I have seen the battery level drop. To keep up you need a 1+amp charger. That being said the harder you charge the batteries the quicker they will wear out.
imnuts said:
You need a charger that won't be seen as a USB connection on the phone. If the phone thinks that it is plugged into your computer, it will charge at roughly half the rate of the wall charger. Wall charger will charge at ~700mA I believe, and the USB/Computer connection will charge at ~400mA. You can find the actual numbers in the power regulator driver in the kernel source though.
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This is pretty interesting. I'm not a phone dev or an electrician, but I assume these mA numbers are something that are 1) lower than what is actually safe and 2) might be able to be tweaked by a dev with nothing better to do. Not that you are even close to falling in that category, but I think many users would be quite interested in being able to get more charge out of shorter durations, albeit at the risk of burning out their phones.
Search for my responses here on charging cables... Sorry but I'm at 35,000 feet in an airliner and can't search very well to include a link. The "magic" to allow a charge current greater than 500ma is either in the stock AC charger or in a "charge only" cable. The data wires to the phone have to be shorted otherwise the phone will think that it is plugged into a computer and will start USB services and will limit the charging current. Cheapest to fabricate your own adapter!
Sent from my SCH-I510 using XDA Premium App
So it wont harm my battery at all to use my galaxy tab charger on my phone? What about in the long run will it degrade faster?
I think the phone has intelligent charging logic (like the newest iphones) so if you keep it cool it will take care of itself. YMMV however!
Sent from my SCH-I510 using XDA Premium App
Sent from my SCH-I510 using XDA Premium App
You could have a 10 amp charger, and if it is picked up as a computer/usb connection, the phone is going to pull the same amount of current as it would just plugging it in to your computer. The same goes for car and wall chargers that get picked up as a computer/usb connection. It doesn't matter what charge rate the charger supports, the phone is going to pull the same current as it is regulated to via the kernel. The only time it won't pull the full charge current it is setup to pull is if you have a charger that is rated for a slower charge rate than what the phone wants AND it won't allow charging above its stated capacity (any good charger should do this).
I have looked around (not much though) at how to make the charge rate faster before, but couldn't see how to do anything besides make the phone charge as fast over USB as it can via the wall charger. However, from what I have read, Li Ion batteries do better if they receive a slower charge to full and will not die as fast compared to being rapidly charged.
imnuts said:
You could have a 10 amp charger, and if it is picked up as a computer/usb connection, the phone is going to pull the same amount of current as it would just plugging it in to your computer. The same goes for car and wall chargers that get picked up as a computer/usb connection. It doesn't matter what charge rate the charger supports, the phone is going to pull the same current as it is regulated to via the kernel. The only time it won't pull the full charge current it is setup to pull is if you have a charger that is rated for a slower charge rate than what the phone wants AND it won't allow charging above its stated capacity (any good charger should do this).
I have looked around (not much though) at how to make the charge rate faster before, but couldn't see how to do anything besides make the phone charge as fast over USB as it can via the wall charger. However, from what I have read, Li Ion batteries do better if they receive a slower charge to full and will not die as fast compared to being rapidly charged.
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Slow charging is true to some extent, but there is no need to charge our battery's under 1.5amp.
And shorting the two data pins on the USB doesn't work it looks for a specific resistance, I saw the ohm load somewhere, but now of course I can't find it lol..
When I get really bored tonight I will edit this and figure it out. But yeah our phones can easily pull 800ma or more with full screen brightness and maxed out processor. So that would result in no charging at all on some chargers. I use a 2a wall charger that came with my evo and it charges very very quickly. Never more than 1 hour to full charge unless I am gaming on it while it charges lol. This is using the cord that came with the phone of course so that it knows it isn't in a data enabled usb slot.
MasterRy88 said:
So it wont harm my battery at all to use my galaxy tab charger on my phone? What about in the long run will it degrade faster?
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In electronics, when given a voltage source (as opposed to a current source) the Voltage is set to a fixed value. That is what our wall USB outlets are. Voltage sources
Think of Voltage like a waterfall. The water is always dropping from the same height. The voltage is always set to the same value.
The mA rating (the current) is determined by how much juice the phone can pull. Just because a charger is capable of supplying more current (say 1 or 2 amps), it doesn't mean that the Droid is going to draw that much current. However, if the droid is capable of pulling more current, it will benefit by charging faster.
Does that help at all?
*edit* Dang it. Didn't scroll down enough to see that imnuts posted already. Oh well, screw it. I'm leaving my post. lol. People who don't know about Voltage and Amperage need to hear the waterfall example at some point in their lives.
lane32x said:
In electronics, when given a voltage source (as opposed to a current source) the Voltage is set to a fixed value. That is what our wall USB outlets are. Voltage sources
Think of Voltage like a waterfall. The water is always dropping from the same height. The voltage is always set to the same value.
The mA rating (the current) is determined by how much juice the phone can pull. Just because a charger is capable of supplying more current (say 1 or 2 amps), it doesn't mean that the Droid is going to draw that much current. However, if the droid is capable of pulling more current, it will benefit by charging faster.
Does that help at all?
*edit* Dang it. Didn't scroll down enough to see that imnuts posted already. Oh well, screw it. I'm leaving my post. lol. People who don't know about Voltage and Amperage need to hear the waterfall example at some point in their lives.
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I don't really understand this because voltage and amperage are different things...
Sent from my Droid Charge running GummyFroyo 1.9.1
skydeaner said:
When I get really bored tonight I will edit this and figure it out. But yeah our phones can easily pull 800ma or more with full screen brightness and maxed out processor. So that would result in no charging at all on some chargers. I use a 2a wall charger that came with my evo and it charges very very quickly. Never more than 1 hour to full charge unless I am gaming on it while it charges lol. This is using the cord that came with the phone of course so that it knows it isn't in a data enabled usb slot.
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Did you read anything I posted The phone is only going to pull a set charge rate, depending on what type of connection it sees. It doesn't care what power rating the connection has, it will pull as much power as it can, up to the limit defined in the power regulator of the kernel. You can use a 1A charger, or a 2A charger, doesn't matter, the phone is still only going to pull a set. The phone will pull 475mA via USB connection (your computer) or 800mA via an AC adapter (wall charger). Unless you figure out how to hack the battery driver to allow a faster charge, those are the two rates you get, regardless of how much power the wall charger can supply.
kvswim said:
I don't really understand this because voltage and amperage are different things...
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A charger is going to provide a set voltage (5V I believe) and that is the only constant in the charging process for what is going into the phone. The amperage is going to be determined by the phone or the wall charger. The only time the wall charger will be the limiting part in charging is if its circuitry is setup to cut off charging over a certain level, and if it is rated for a lower charging rate, odds are, it probably won't cut it off and instead produce a fire hazard.
Something else people don't realize is that the charging rate isn't just bad for the battery if you charge to fast, pulling to much power in to charge the battery, especially while using the phone, creates a heat problem as well. While the phone will shut itself down before any major damage can occur, why would you even want to create a situation that could potentially damage the phone hardware?
imnuts said:
Did you read anything I posted The phone is only going to pull a set charge rate, depending on what type of connection it sees. It doesn't care what power rating the connection has, it will pull as much power as it can, up to the limit defined in the power regulator of the kernel. You can use a 1A charger, or a 2A charger, doesn't matter, the phone is still only going to pull a set. The phone will pull 475mA via USB connection (your computer) or 800mA via an AC adapter (wall charger). Unless you figure out how to hack the battery driver to allow a faster charge, those are the two rates you get, regardless of how much power the wall charger can supply.
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what about car chargers? i have one that I think is 2A and it seems to charge my phone a bit faster than my wall charger
blazing through on my VZ Droid Charge 4G
Usually, when I charge my phone, it charges pretty quickly, despite the output of amperes; however, when I charge my phone using an outlet nearest to my bed, the charging takes considerably longer, even with a 1 ampere output. (I usually use .7). Also, when I use the phone during charging, it even loses battery... like the percentage goes down. Do some outlets in households have a lower output of energy? Anyone have any ideas?
What rom are you on? Some roms have a fast charge mode. Open Terminal and type "ffc" without the quotes.
Sent from my SCH-I535 using xda app-developers app
ahlexkim said:
Do some outlets in households have a lower output of energy?
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No. Most household circuits have a circuit breaker with 15 amps of capacity. More than enough. However, the outlet itself or the wiring on the back of the outlet might have issues. Does your charger fit snugly in the receptacle, or is it loose? If it's loose, you are probably getting an intermittent charge. A good outlet should require a little bit of pressure to plug something into it. If your charger just slides in easily, that could be causing your problem.
Good luck.
have you tried different chargers in the outlet. some chargers appear to the phone to be a usb port (and enable a slower charging mode).
Sent from my SCH-I535 using xda premium
i have slow charging too )=
i dont want to download A custom rom ... I dont want to break my phone ...