Hi every body,
I want to use my android device without battery but use only the external power like PC, may I do that?
tungnguyen01 said:
Hi every body,
I want to use my android device without battery but use only the external power like PC, may I do that?
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No, it cannot run by external power, even with your charger connected to your charging port, your tablet won't run without battery.
Laptop can run directly with external power source without battery, but tablet cannot.
Related
Fingers crossed :fingers-crossed: my shiny new HTC One should be arriving tomorrow. Thanks to HTC's idiotic decision not to supply either a removable battery or a memory card slot, I am going to need both some form of external storage that the phone can access - perhaps a flash drive accessed via OTG, but I'm open to other suggestions - and an external battery/charger of some kind; and (which may be the tricky part) it has to be possible to access both of these things simultaneously.
With regards to power, capacity is clearly important (i.e. the number of mAh held) but it does also need to be reasonably portable - not something that weighs over a pound! - and, if at all possible, it should be something that can be charged or replenished very quickly. Ideally it should be able to charge the phone's internal battery as fast as a mains charger can.
For storage, I need a decent amount - 32GB is the absolute minimum, but 64GB or more would be better. It would also be helpful to have something not too big and heavy (I'll be carrying it around at all times). And, if possible, it should also be fast - especially when transferring files from a PC.
I may be acquiring a case at some point as well - not sure about that yet.
Advice, please!
Shasarak said:
Advice, please!
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http://www.seagate.com/em/en/external-hard-drives/portable-hard-drives/wireless/wireless-plus/
http://www.expansys.com/samsung-portable-battery-charging-pack-9000mah-241435/
Damn..the Seagate Wireless Plus looks nice
.. dear easter bunny
For battery bank what's most advisable?
HTC's official 6000mAh battery bank £44.99
or
Anker 10000mAh battery bank £37.99
Seems like a no brainer, but the Anker seems to be really bulky in comparison.
HTC reckon their battery bank will give 2 full charges......and that Anker one is nearly a foot long !!
jhenrikj said:
http://www.seagate.com/em/en/external-hard-drives/portable-hard-drives/wireless/wireless-plus/
http://www.expansys.com/samsung-portable-battery-charging-pack-9000mah-241435/
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What is it about the Samsung battery pack that makes it worth £70? There may very well be something, but I'd like to know what.
I've got a NAS with TB's of storage so the 26GB usable 'limit' is irrelevant.
compact_bijou said:
I've got a NAS with TB's of storage so the 26GB usable 'limit' is irrelevant.
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Does it fit in your pocket?
Anyone have any other suggestions? I'm somewhat tempted by that Seagate drive, but I'm a bit uneasy about using storage that has its own onboard battery and needs to be charged independently of the phone - combined with a rechargeable battery pack, that's an awful lot of things to charge up. It's also bulky and probably mechanically rather fragile - hard drives don't much like being bounced around while they're operating. And then there's the cost....
Has anyone come up with a cable which lets you connect OTG USB storage and an external battery or charger simultaneously?
The one works well with my sandisk cruizer extreme, and it's seriously quick provided you have usb 3.0
I believe maxell have a wireless flash drive, kingston have a wireless ssd as well.
huxley309 said:
The one works well with my sandisk cruizer extreme, and it's seriously quick provided you have usb 3.0
I believe maxell have a wireless flash drive, kingston have a wireless ssd as well.
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The Maxell device is an interesting possibility. It's essentially a wireless adapter for a memory card - not a micro-sd card of the sort you get in a phone, but a full-size sd card of the kind designed for digital cameras. You then transfer files (or stream them) via wifi rather than a direct connection to the phone. You can (I think) move files onto it from a PC via USB (USB 2.0 only, though). I get the impression it's designed more for iOS than Android....
http://www.airstash.com/#specs
But I'm still not sure a wireless device is the way to go - like I said, that's one extra device you have to remember to charge up, not to mention the complications of getting the phone to connect to the Internet over wifi and to the external drive at the same time, plus possible security implications, etc. I would have thought there must be some sort of adapter to allow a USB storage device and a charger or external battery to be connected to the phone at the same time...?
For example, suppose you had a cable like this: http://einfiniteshop.blogspot.co.uk/2013/01/usb-otg-cable-with-external-usb-power.html
Or this: http://www.amazon.com/dp/B009YPYORM
I think these cables are designed for situations where you want to use an external power supply to power your OTG device; but could the external power supply charge the phone as well (or instead)? Or is that not possible?
Hi dear guys,
When i connect my galaxy tab s to my laptop using USB cable, it starts charging. does this have any side effects or does this affect the battery in any ways that may harm it?
feryonline said:
Hi dear guys,
When i connect my galaxy tab s to my laptop using USB cable, it starts charging. does this have any side effects or does this affect the battery in any ways that may harm it?
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I doubt it would cause any harm, but it may charge slower than if you were to use the wall charger. My laptop provides such a weak power output that the tablet doesn't recognize it's charging, yet it does so. Very slow! Other than that, it should be fine.
I get a red cross on the battery icon when i connect my 10.5 to my notebook, i measure how many ma the tablet was charging at, on my right usb port it was 450ma and the left it was 850 these are usb 3.0 ports which should provide up to 900ma but a lot of devices are connected to the usb ports on the inside of the notebook, like the webcam and the memory card reader, ect, I suspect this is the reason for the difference in two usb ports providing a different charging rate.
A slow charge is better for the battery, but even with the screen off the tablet is using power say 400mah and the usb port is only providing 450ma the battery will take a long long time to charge.
John.
I work a lot from home and either my phone or 8.4 is hooked up to USB on my PC.
The tab charges approx. 1% every 8-10 minutes. That is with almost no use.
I'm not sure, but I think charging through USB wont keep up with heavy use.
Does USB tethering harm Lithium-Ion battery?
thank you so much dear guys,
I want to use USB tethering for sharing the device’s mobile data connection with my laptop via USB cable. So I want to know, does this have any side effects or does this affect the battery in any ways that may harm it?
it's good 4 the battery. the worst you can do is going under 10%. the best for the battery is to stay between 30 and 80% and avoid heat.
feryonline said:
thank you so much dear guys,
I want to use USB tethering for sharing the device’s mobile data connection with my laptop via USB cable. So I want to know, does this have any side effects or does this affect the battery in any ways that may harm it?
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its same as a phone imo.. its never good to use the tablet while its charging so imo the only issue is it will charge a lot slower
Sent from my SM-G925V using XDA Free mobile app
I ripped up the usb pads on my nexus 7 removing the usb port. I plan to mount it in my dash so I cannot use wireless charging. Probing the back cover wireless charging pads I get 0 volts. Anyone know if I can directly solder onto them and hook them upto 5v on the nexus 7 side? Or are there any other easy points to connect to?
Freeloader247 said:
I ripped up the usb pads on my nexus 7 removing the usb port. I plan to mount it in my dash so I cannot use wireless charging. Probing the back cover wireless charging pads I get 0 volts. Anyone know if I can directly solder onto them and hook them upto 5v on the nexus 7 side? Or are there any other easy points to connect to?
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Do not connect anything to the wireless pads. In the situation you have described, the no-battery mod is the perfect solution https://www.youtube.com/watch?v=9N2Bh4fI8Bo
I thought about doing this the battery mod, however I wont really have access to the power switch in my setup, hopfully there is a auto start kernal but then the boot times kind of kill the experiance.
Freeloader247 said:
I thought about doing this the battery mod, however I wont really have access to the power switch in my setup, hopfully there is a auto start kernal but then the boot times kind of kill the experiance.
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I believe the change to auto-start is easy. I did so on the 2012 nexus. I'll check my notes and update if i find anything.
You can also get a momentary switch and solder two wire under the power button switch cap(outer, and inner ring) to remotely mount the power/volume buttons.
I have done the battery bypass, i use a 12v DC - 5v 3a DC power supply from linkswell i think. It registers the tablet as being 100% full, but still allows it to "charge" i only use the "charge" to trigger turning on/off the tablet. can use either wireless or usb to trigger the tablet. In either case, it's nice to have an external power button, especially if the unit is encased.
To start the tablet when power is detected:
In adb run this command:
fastboot oem-off-mode charge 0
to force the tablet to power on if under power (plugged in and charging).
Hello,
I am prototyping a custom embedded system using the Pixel 2 XL. All the phone will do is show the video feed from a USB webcam. This works fine, but having trouble getting it to charge at the same time. I connected a 5v power supply in addition to the USB OTG camera. The phone recognizes a device (the power supply) has been connected by turning on it's screen, but does not charge. It should literally just be seeing 5v on the USB bus with both data pins left open on the power supply side (because they are needed for the camera). Expected behavior occurs with another phone I tested: It charges at default 500ma current since it can't negotiate.
Is the charging firmware on the Pixel just really picky? How can I FORCE the Pixel to pull current and charge, given that I know the voltage is correct and plenty of current is available from the custom power supply?
The phone runs last build of Android 9 and can't/won't be upgraded.
Thank you
flyoffacliff said:
Hello,
I am prototyping a custom embedded system using the Pixel 2 XL. All the phone will do is show the video feed from a USB webcam. This works fine, but having trouble getting it to charge at the same time. I connected a 5v power supply in addition to the USB OTG camera. The phone recognizes a device (the power supply) has been connected by turning on it's screen, but does not charge. It should literally just be seeing 5v on the USB bus with both data pins left open on the power supply side (because they are needed for the camera). Expected behavior occurs with another phone I tested: It charges at default 500ma current since it can't negotiate.
Is the charging firmware on the Pixel just really picky? How can I FORCE the Pixel to pull current and charge, given that I know the voltage is correct and plenty of current is available from the custom power supply?
The phone runs last build of Android 9 and can't/won't be upgraded.
Thank you
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this will help you you can use the original pixel charger with this and have usb devices connected and charge at full speed.
https://smile.amazon.com/gp/product/B06XF4FVSQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
here is a tip plug power into the dongle first not phone first otherwise it wont charge
billycar11 said:
this will help you you can use the original pixel charger with this and have usb devices connected and charge at full speed.
https://smile.amazon.com/gp/product/B06XF4FVSQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
here is a tip plug power into the dongle first not phone first otherwise it wont charge
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Thank you, so this will actually charge the phone and not just power USB devices on the hub? Interesting
Looks like this is the same, but a single device hub.
https://smile.amazon.com/gp/product/B06Y4NSRN7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1&th=1
The embedded system only has 12v and 5v DC power available. Is there a charger that will work with this? Does it have to be USB–PD? Thanks
Hello,
I have a question about the charge of my new S20 (Exynos version):
1) connected to the charger it charges (small 'lightning bolt" on the battery symbol).
2) connected to a booted PC it charges (same for the lightning symbol)
3) connected to the same PC in standby: the symbol appears for a fraction of a second then disappears and it does not charge. It is the same cable and USB plug as in case 2.
4) PC in standby: other USB port / other cable: it is the same, charge symbol very brief then nothing, it does not charge.
Another phone charges without any problem with the same cables/USB socket on the PC in standby ... I do not understand what is wrong.
Same issue with the S20 plugged to another PC ... but ok with other phones
An expert opinion? Thanks in advance.
Its charging board issue
Same issue faced in my s9 then chaging baord changed by service center
I don't understand the "charging" board problem : the phone charges with the same cable when the PC is on, with a charger, with USB in the car...
I was thinking that maybe when the PC is in sleep mode there is not enough power going through the USB port and it won't charge this phone model ?
I think I get a possible answer to my question :
---> using a shorter (about 1 feet only - Aukey brand) USB-A to USB-C cable allows to charge the S20 while the PC is in sleep mode. Any longer cable will only charge the other phones.
--> I guess the S20 require more "power" from an USB port to start recharging. Of course while the PC is on it must have more power as it works even with a longer cable.
Are all the jacks/ports clean and free of debris?
Are the cables good? Partial cable failures happen and charging anomolies is how it will first manifest its self many times.
You'll get much faster charging using the Samsung brick... best to limit charge to 90%, ideally 60-70% to lengthen battery life.
Yes the phone is 2 weeks "old" so no debris in port. It is working flawlessly except when trying to charge it when the PC is in sleep mode ... if the cable is too long.
But I'll use the S9 or S20 charger so it'll be ok.
It doesnt sound like your phone's fault but usb port in your motherboard - if it works fine while using charger then i wouldnt worry
if it works fine while using charger then i wouldnt worry
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Agreed ! Even I think the USB port is working fine with every other (older) phone ... but it seems this S20 requires more "energy" to start charging. It is the same while trying with a laptop in sleep mode.
Why would you charge it over pc? Isnt it super slow?
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Explanation:
The ports on yor pc when it's sleeping are in power saving mode. It works with a shorter cable because of something called inner resistance of the cable. When the cable is longer but made of the same material it has a bigger resistance therefore the phone does not get enough current to charge. You see the bolt icon for a bit because of a current peak coming from the usb port. Then the phone thinks "damn, that's not enough power" and stops charging.
All of this means that when you connect your phone to charge when the pc is not sleeping it becomes barely enough current to charge, but nevertheless it becomes something, that's why it charges.
Faulty charging board and etc. is not the problem, there is actually no problem. Your phone just needs a current maybe over 1A/5V to start charging, your port probably doesn't have that capacity, especially when pc is sleeping.
Just use the charger, it's much faster and doesn't stress the battery for a long periods of time.
honor701 said:
Explanation:
The ports on yor pc when it's sleeping are in power saving mode. It works with a shorter cable because of something called inner resistance of the cable. When the cable is longer but made of the same material it has a bigger resistance therefore the phone does not get enough current to charge. You see the bolt icon for a bit because of a current peak coming from the usb port. Then the phone thinks "damn, that's not enough power" and stops charging.
All of this means that when you connect your phone to charge when the pc is not sleeping it becomes barely enough current to charge, but nevertheless it becomes something, that's why it charges.
Faulty charging board and etc. is not the problem, there is actually no problem. Your phone just needs a current maybe over 1A/5V to start charging, your port probably doesn't have that capacity, especially when pc is sleeping.
Just use the charger, it's much faster and doesn't stress the battery for a long periods of time.
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Thanks a lot for you technical explanations. I am using a wallcharger instead of charging the phone overnight hooked to the Pc in sleep mode.