Hi,
I've lost my charger, and I don't know if I can charge it with a charger with 5v - 1A or not, what I do know is that charging with USB is 5v - 500mA.
What's the power of the SE Arc original charger?
On the charger it says output 5V 1A
Is that what your looking for
It's Exactelly what I'm looking for thank you very much
The original SE charger for the arc is the GreenHeart charger EP800. It has got an output of 5V; 850mA.
As far as I know, there's no SE charger with an output of 1A. I've seen chargers with 500mA, 700mA and the 850mA.
My charger got fried during a power surge while holidaying in India so after asking around on the forum, I bought a Nokia AC-10N charger with an output of 5V, 1200mA. I've been using it without any problems. Pretty happy with it. Charges the phone much faster.
Thank you, that helps very much, but I heared charging the phone with higher voltage or higher Amperage can charge it faster, but it lowers the battery life on the long terme, it's appreciated to charge it with lower power in order to preserve battery life
MehdiArc said:
Thank you, that helps very much, but I heared charging the phone with higher voltage or higher Amperage can charge it faster, but it lowers the battery life on the long terme, it's appreciated to charge it with lower power in order to preserve battery life
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Totally true on all counts. You can really use ANY usb charger to charge your Arc, but the higher the mA the faster it will charge. And the higher the mA, the less overall life your battery will have. If it's normally supposed to be good for 5000 recharges, it might drop to 4000 recharges (just numbers pulled out of thin air).
The "Normal" standard for USB power is 0.5A (or 500mA). The iPad for example uses 1.0A, or twice as much as standard. Now in the iPad's case, it refuses to charge with anything less. I don't know if that's true for the Arc or not...if so, and the SE charger is rated at 850mA, then that's probably as low as you'd want to go just to be on the safe side.
Personally, I'm willing to use the iPad's charger and charge a bit faster for a bit lower useful battery lifetime. A new battery I can buy....time spent waiting for my phone to be charged I can't get back
The amperage rating on a charger defines the maximum current the charger is capable of supplying. A 1A charger doesnt force 1A down the throat of whatever's connected to it, if you connect something can only manage to pull a maximum of 500mA then it will only get 500mA.
Consumer power supplies are generally constant voltage. E.g. a 5V charger will supply 5V to anything connected to it. The amount of current that the device will draw at 5V is the amount it was designed to draw, up to the limit that the charger can supply. If the charger cant supply enough, generally you just get slower charging (though some poorly designed devices will just refuse to charge at all). What *will* tend to destroy your device quickly is a voltage mismatch, e.g. connecting a 5V phone to a 12V charger.
You can get constant current power supplies. These ramp up the voltage in order to force the required current out regardless of what's attached to it (even if that's a human being). They are scary.
daveybaby said:
The amperage rating on a charger defines the maximum current the charger is capable of supplying. A 1A charger doesnt force 1A down the throat of whatever's connected to it, if you connect something can only manage to pull a maximum of 500mA then it will only get 500mA.
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Exactelly what I was thinking, thanks.
Now I think I can charge my Arc with 1A without any problem, since it's gonna take only 850 mA from it
Related
So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?
Benny_L said:
So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?
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You've pretty much answer your own question!
The current supplied by a charger/USB port determines how fast it can charge the battery, which is why the wall charger (1amp) charges much faster than a PC USB port (0.5 amps).
Regards,
Dave
It's almost completely logical.. say you have a 1.5A battery (1500mA) and a 500mAh charger (ie USB) then it will take 3 hours for it to charge but with a 1000mAh charger it will take an hour and a half.
Can't really explain it more than that, so hth.
Well , Yes and No
This is only partly true ......
If you charge it on the PC , max output is 0.5 amps , and data is possible while charging .
Now with Desktop and car charger , the amp can be anything the manufacturer likes but you have to keep the following in mind :
USB Specs state the following :
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In Battery Charging Specification,[32] new powering modes are added to the USB specification. A host or hub Charging Downstream Port can supply a maximum of 1.5 A when communicating at low-bandwidth or full-bandwidth, a maximum of 900 mA when communicating at high-bandwidth, and as much current as the connector will safely handle when no communication is taking place; USB 2.0 standard-A connectors are rated at 1500 mA by default. A Dedicated Charging Port can supply a maximum of 1.8 A of current at 5.25 V. A portable device can draw up to 1.8 A from a Dedicated Charging Port. The Dedicated Charging Port shorts the D+ and D- pins with a resistance of at most 200Ω. The short disables data transfer, but allows devices to detect the Dedicated Charging Port and allows very simple, high current chargers to be manufactured. The increased current (faster, 9 W charging) will occur once both the host/hub and devices support the new charging specification.
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So if your Desire ( Yes , the Desire supports these specs ) detects the short , it will switch to fast charging mode otherwise it will limit the charging current .
Unfortunately , there's no way to know , just by looking at a charger, if it respects the specs or is just a low cost 5V powersupply . I've encountered quite a few ( mostly lowcost) desktop and car chargers that are rated between 1 and 2 amps , but still take bl**dy ages to charge the phone . Checking those with a measuring tool , you usually see the data pins are "Not Connected" instead of being shortened :-(((
Final Word .... don't try to save some money on a cheap charger , you'll regret it Genuine HTC works great , others do the same , but don't expect a $1 charger from Hongkong or whereever to do it !
These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
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- Sent via my HTC Desire -
th3 said:
These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
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- Sent via my HTC Desire -
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Ya, I noticed the charge slows down considerably for the final 10-15 %
I find myself charging my Desire more than I actually use it, lol.
I found now the answer to this problem: I use a Nokia charger (5v and 890 mA) with a microusb adapter. You can find one on eBay at ~2$
Now it takes about 2 hours from 20% to 100%
Lets hope nothing wrong happens to my precious Desire
look here for a method to charge at ac speed from usb, explains a few things too.
My S3 came with a 1Ah charger. My Fascinate came with a 700mAh charger. Is it safe to charge my S3 on a 2Ah charger?
Thanks!
Yes. The charging rate is actually limited by the phone so the battery will not be damaged.
I use 2.1 amp chargers at home and in my car. I don't think I have ever seen a charge rate faster than 1.3 amps. It is slightly faster than the stock charger, so at least that's something.
It won't make any difference at all. That's a very common misconception about charger amperage (amp, for short) ratings:
The charger is rated to provide "up to" a certain amperage (current), but doesn't push that amperage to the phone. Rather, the phone draws however much amperage it wants. A problem can exist if the phone pulls more amperage than the charger is rated to supply. (For example, pulling 1 amp from a netbook USB port can burn out the USB port.)
This is why the phone kernel, by default, only pulls <500 milliamps from an unrecognized charger... That's a "safe" amount for pretty much anything USB.
Chances are that the phone will only pull 450 to 500 milliamps from your 2 amp (2000 milliamp) charger unless you are using a custom kernel that pushes it higher (and then I don't think the charging circuitry in the in phone will ever pull more than 950 milliamps.)
Take care
Gary
i calcualted that my 2.1 car charger charges my phone 1% every two mins versus my stock charger at home that charges 1% every four mins so technically twiuce as fast
That's why it's recommended that you only use the charger that came with your phone. I know that's not always possible, but that's what's said.
So, I have powerbank and I have 2 ways of charging: 1A and 2.1A. which one to use when charging my note 2?
Handwritten from my Note 2
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
kebabs said:
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
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I have samsung cable.. So is it smart to charge via 2.1 A ? Can it do some damage on the phone ?
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
sandulea said:
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
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Thanks for reply mate ! I was thinking the same, but i needed some sort of confirmation tho
Use the 2.1A one.
The phone should only draw 2A from it anyway, that just means the port is capable of supplying 2.1A.
Using the 1A port will just charge your phone slowly, the 2.1A port should charge it as quick as the official charger, depending on which cable you use.
It is a matter of supply and demand. All USB devices can safely be plugged into any USB charger. Given an unlimited amount of current available from the charger, each device will still only draw only as much current as it is designed to draw. If the charger is rated 2.1 Amps or 5 Amps or 10 Amps, a 1.5 Amp device will still only draw 1.5 Amps. The charge rate will be at maximum Think of it like your house wiring. The circuit may have a 20 Amp circuit breaker in the basement but we plug in 40 Watt bulbs and 100 Watt bulbs and TVs and electric shavers that all draw different amounts of current. The 100 Watt bulb uses less than an amp but is unharmed being plugged into a 20 Amp receptacle (charger). Now we come to the flip side. If the charger Is rated lower than the device it just charges slower than it would if the charger could supply at least as much as the device uses. To go back to our example, the 1.5 Amp device plugged into a 1 Amp charger will take longer to charge that it would with a charger rated 1.5 Amps or higher. My analogy has one hole. If the stuff plugged into the house receptacles exceeds 20 Amps the circuit breaker pops. This will not happen with USB chargers as they limit the current and will not try to supply more than they are rated for. Stick to chargers rated as high as the one that came with your device or higher and you will be fine
I noticed that when I charge my Note 8.0 with the USB wall adapter that comes with it, charging only takes about 2-3 hours but when I use the power cable of my Samsung Galaxy S Advance, charging can take up to 4-6 hours.
Assuming that I don't mind the longer waiting time, will using the latter power cable to charge my device shorten its battery lifespan or damage it in anyway? Thanks!
Addtional details:
I'm guessing that the difference in charging time is due to the difference in current. High current contributes to greater heating, which damages the battery but I'm wondering if higher temperature over a shorter duration or lower temperature over a longer duration is more damanging. Is the difference even significant?
I've read this link How USB charging works, or how to avoid blowing up your smartphone from "is it safe to use any usb cable to charge s3?" and got the idea that my device isn't going to blow up or anything like that. I just want to know if it damages the device because I've spent a good fortune on it and I want it to last for as long as possible (hopefully a minimum of 5 years). Yes, any other advice on how to prolong device lifespan is also welcome. Thanks a lot guys!
The reason its taking longer is its not providing the same amt of juice the note charger is. I looked at the output of the samsung note 8 charger and its 2amps. Looking at an oem charger for your phone its 1000mah which is 1amp so half the charging amt thus the longer charging time. Now you need to take a look at the charger and read the output amperage on it and if its less then 2 amps you are fine. If its over 2 amps then I would discontinue using it as it could cause harm.
As long as the amperage of the other charger is less then the samsung note 8 charger you won't have any issues other then longer charging time. Once you go above the 2amp rating I would be concerned as you are putting more amps into the battery then what it could be rated for in the charging cycle.
sparker366 said:
The reason its taking longer is its not providing the same amt of juice the note charger is. I looked at the output of the samsung note 8 charger and its 2amps. Looking at an oem charger for your phone its 1000mah which is 1amp so half the charging amt thus the longer charging time. Now you need to take a look at the charger and read the output amperage on it and if its less then 2 amps you are fine. If its over 2 amps then I would discontinue using it as it could cause harm.
As long as the amperage of the other charger is less then the samsung note 8 charger you won't have any issues other then longer charging time. Once you go above the 2amp rating I would be concerned as you are putting more amps into the battery then what it could be rated for in the charging cycle.
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Actually, the amps used to charge with is up to the device not the charger. If your device comes with a charger that has an output rating of [email protected] and you plug it into a charger rated at [email protected] it won't necessarily charge it any faster unless the device pulls more than it should. Just means the charger has a higher output rating and can handle more power hungry devices. It should not hurt the device. However, if you up the voltage than there will be problems so you need to make sure the charger does not exceed the voltage. Plugging the device into a charger with lower ratings will of course charge slower because the device cannot draw as much.
sparker366 said:
The reason its taking longer is its not providing the same amt of juice the note charger is. I looked at the output of the samsung note 8 charger and its 2amps. Looking at an oem charger for your phone its 1000mah which is 1amp so half the charging amt thus the longer charging time. Now you need to take a look at the charger and read the output amperage on it and if its less then 2 amps you are fine. If its over 2 amps then I would discontinue using it as it could cause harm.
As long as the amperage of the other charger is less then the samsung note 8 charger you won't have any issues other then longer charging time. Once you go above the 2amp rating I would be concerned as you are putting more amps into the battery then what it could be rated for in the charging cycle.
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Thanks I checked the charger and it says 0.7amps.
Hi
watch this video to get all info about the Optimus G battery
https://www.youtube.com/watch?v=O7Q8E5dzyxg&list=PLShKiWbiCfxbiMFDOHnS2Y_2HzAMwsRpI&index=26
Nice tech. I liked the way they managed cpu activities besides all.
My question is that why it takes around 2:30 to charge the phone fully?
According to this: http://www.qualcomm.com/media/blog/...-charge-10-less-time-charging-more-time-doing
OG benefits from Quick charge 1.0 which should boost charging process. Is it boosted by default? Is 2:30 fast enough for a 2100 mAh battery? or it's something kernel related and should be enabled?
2:45-3:00 its the charging time and its just fine.
You can always use a bigger charger and ruin your battery faster. Or explode..
Sent from my G using Tapatalk Pro
nikos523 said:
2:45-3:00 its the charging time and its just fine.
You can always use a bigger charger and ruin your battery faster. Or explode..
Sent from my G using Tapatalk Pro
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I don't want to ruin my battery bro. I'm just curious to know if other phones with the almost same specifications have similar charging time or not. I mean is this normal or not? Do you know about nexus 4 charging time? or xperia zr? these all have quick charge 1.0 while snapdragon 800 offers quick charge 2.0 and that's why phones like G2 having a battery with more capacity have under 2 hours charging time.
nikos523 said:
You can always use a bigger charger and ruin your battery faster. Or explode..
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Well... Unless you use a charger that sets a current (extremely unlikely), it won't matter a single bit. Just a simple physics... All standard chargers provide stabilized voltage within certain current limits (that's your charger's Amp rating). The phone's battery charging circuit determines the current it draws from a charger. So, even if your bad-ass charger is capable of providing 10A output, your phone will not draw more than it needs when charging, which is about 1A (sorry, I don't know the exact charging current of the OG).
kt-Froggy said:
Well... Unless you use a charger that sets a current (extremely unlikely), it won't matter a single bit. Just a simple physics... All standard chargers provide stabilized voltage within certain current limits (that's your charger's Amp rating). The phone's battery charging circuit determines the current it draws from a charger. So, even if your bad-ass charger is capable of providing 10A output, your phone will not draw more than it needs when charging, which is about 1A (sorry, I don't know the exact charging current of the OG).
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the charging current of OG is 1.2. So, you mean the phone won't be charged faster if one uses a higher voltage charger?
akahroba said:
the charging current of OG is 1.2. So, you mean the phone won't be charged faster if one uses a higher voltage charger?
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If you use a higher voltage charger, you could simply fry your phone -- depends on the actual voltage. The protection circuit may simply shut off the input, or limit the voltage at 5V -- I don't know enough about the OG's schematics. But it should still limit the current at the value it's designed for. Anyway, I wouldn't experiment with that... But if you are talking about higher Amp-rated charger with 5V output, then it won't charge faster, unless the lower-rated charger is actually rated lower than the phone would take. Here, just a couple of examples, assuming 1.2A nominal charging current...
Example #1: 0.7A charger. The phone is trying to suck as much as it needs, but the charger can only supply 700mA. So, it will charge slowly.
Example #2: Stock 1.2A charger. The charger is supplying just what the phone needs, which is 1.2A. So, it will charge faster.
Example #3: 2A charger (or more). The phone will still draw 1.2A, even though the charger is capable of supplying more. So, it will charge at the same speed as with 1.2A charger.
Makes sense?
kt-Froggy said:
If you use a higher voltage charger, you could simply fry your phone -- depends on the actual voltage. The protection circuit may simply shut off the input, or limit the voltage at 5V -- I don't know enough about the OG's schematics. But it should still limit the current at the value it's designed for. Anyway, I wouldn't experiment with that... But if you are talking about higher Amp-rated charger with 5V output, then it won't charge faster, unless the lower-rated charger is actually rated lower than the phone would take. Here, just a couple of examples, assuming 1.2A nominal charging current...
Example #1: 0.7A charger. The phone is trying to suck as much as it needs, but the charger can only supply 700mA. So, it will charge slowly.
Example #2: Stock 1.2A charger. The charger is supplying just what the phone needs, which is 1.2A. So, it will charge faster.
Example #3: 2A charger (or more). The phone will still draw 1.2A, even though the charger is capable of supplying more. So, it will charge at the same speed as with 1.2A charger.
Makes sense?
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Oh, I see. Thanks. But, I don't know about the schematics either. I don't know if the phone has this smartness to draw as much as it needs or just draws as much as given. So, I won't risk either.
akahroba said:
I don't know if the phone has this smartness to draw as much as it needs or just draws as much as given. So, I won't risk either.
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Regardless of particular schematics, a properly designed charging circuit is always drawing the set current from a source. In other words, your phone is definitely smart enough to only take what it needs. Basically, "as much as given" in this context is incorrect statement... A charger "gives" a specific voltage (5VDC for USB-charged devices), and the device "takes" a specific current. So, no matter what the Amp rating of a charger is, it will only give as much juice (Amps) as the device decides to take (within a charger's Amp limit). If a charger can't provide enough current for the device, then you have a problem with slow charge, or no charge at all. But higher Amp-rated chargers are fine. If you have, let's say, a charger from a tablet rated at 2.5A, or a stabilized lab power supply rated at 20A, both of them would be OK to use for charging your OG. The only possible problem in this case could be a defective charging circuit in the phone, which might not limit the current the way it's designed to, and could draw enough from a high-powered charger to kill itself. Low-powered charger would simply not be able to provide a dangerous current, if that happens...
Having said that, I've got quite a zoo of various power supplies laying around, and I used all kinds of them rated up to 30Amp to charge different devices. Never had any problems.
Having said that, I've got quite a zoo of various power supplies laying around, and I used all kinds of them rated up to 30Amp to charge different devices. Never had any problems.
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and you've never seen any acceleration in charging time? So, it's just a common mistake that people say higher Amp-rated charger results in faster charge?
E977 battery difference?!
look at these two screenshots. one of them is E977 (in Spanish) and the battery is written to be SiO Lithium-ion. (SiO+ is used in G2)
the other is for E975 and the battery is written to be Lithium-Polymer.
Are these two the same?! Or this is an improvement made in hardware revision 1.2?
akahroba said:
and you've never seen any acceleration in charging time? So, it's just a common mistake that people say higher Amp-rated charger results in faster charge?
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As I said before, it really depends what exact Amp ratings you are comparing... If a charger is rated lower that a phone's charging circuit, it will certainly underperform, and will charge slowly. But if your charger's rating matches or exceeds the charging current required by phone, then it makes no difference.
I personally don't have an OG stock charger, so I don't have any experience using a charger rated specifically at 1.2A. I only have USB chargers rated at 700mA, 850mA, 1A and 2A. Plus, an assortment of other power supplies rated anywhere from 2A to 30A. Of course, I do see a faster charging when going from 700mA charger to 1A, and then to 2A, because the first two are under-rated compared to the phone's specs. However, once I go with 2A or the higher rated power sources, there's no difference at all.
Hope that explains it.
kt-Froggy said:
As I said before, it really depends what exact Amp ratings you are comparing... If a charger is rated lower that a phone's charging circuit, it will certainly underperform, and will charge slowly. But if your charger's rating matches or exceeds the charging current required by phone, then it makes no difference.
I personally don't have an OG stock charger, so I don't have any experience using a charger rated specifically at 1.2A. I only have USB chargers rated at 700mA, 850mA, 1A and 2A. Plus, an assortment of other power supplies rated anywhere from 2A to 30A. Of course, I do see a faster charging when going from 700mA charger to 1A, and then to 2A, because the first two are under-rated compared to the phone's specs. However, once I go with 2A or the higher rated power sources, there's no difference at all.
Hope that explains it.
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Yes, the last sentence clarified it. Thanks alot mate.