Hi! I just received a fully functional HTC Himalaya, but unfortunately it didn't came with a Travel Charger included.
So I would want to make one, because they are hard to find, and on ebay the shipment takes a very long time.
I have searched the forum (and on googgle) but i cannot find the power supply specifications for the charger.
If you have one, please take a photo or type the specs, like this :
INPUT : 100-240V ~ 150 mAH 50-60 Hz
OUTPUT : 4.9V 700mAH (copied from a Sony Ericsson charger, LOL )
Thanks in advance!
Since this is the Himalaya forum, nobody has a Himalaya ?!?
Weird...
Really? Nodoby with a Himalaya ?!?!?!?!
58 replies and no response. WTF ?!?
Ok, found this image, but can't read the specs (too small)
5V 2000mAH ? CLICK HERE!
5volts is the only spc that matters
amps are not pushed into a device it's drawn by the device
according to owns law amp=volts/resistance
no device will draw more then it was max made to
so you can get a 5volts 1000000MAmp supply and it would make no difference
there is a lower amp level before it begin to charge but being that you can get
manual chargers with a swing it should be soo low it irrelevant
about the 5volts then that's in general seen as 5volts +-20%
Thanks for your reply.
I know that the ampers ar not so important, but i would like to know the standard value for a genuine HTC charger.
From what i see in the picture, it is a 5V 1280mAH.
That means that if i try to use a 5V 650mAH charger (that i currently have) the charging will be done 2 times slower.
So instead of 2 hours 30 minutes (for example) the phone will pe fully charged in 5 hours (quite a lot of time, in my perspective).
What do you think?
I think the charger that comes with the xda2 is overpowered vs. now much power the device will take in think thats the general deal with all wall chargers
usb will only provide 500mA
could take a look on my old charger apart that it's in the back of the cupboard so have to go passed tons of cables fans chargers and the likes so not right now
I'm a soft - not a hard - guy!!
I bought a 2 port, 2A/1A charger offa hee-heebay. I doesn't charge so fast USB specs tell me to short the data pins, on here theres talk of resistor values across pins 4/5.
What do I need to do to get the most current down a USB cable for charging?? Well, apart from holding it in the air in an open field in a thunderstorm.....
Thanks, H.
Just go and buy an original Samsung car charger ... they're only 10 Euro or something like that.
The cheap ones from fleeBay have poor quality components that don't output enough current. I've tested one that from 5.3V on a 0mA load dropped to 3V on a ~500mA load and it didn't got past ~700mA, this adapter was rated 1A at 5V ... and don't make me get started on the safety .
Isn't it ok or simplier just to connect the phone to USB port on the CD Player ?
Yes, you can. but the USB port on most head units rarely have a high output so expect the charging to go very slowly or just keep your battery with the same power level. So a car charger is still recommended if you want to charge your phone fast.
Well I figured it out. Thanks. It might be that shorting the data will do it. The iCharger (tm) I bought has resistors across the data lines, presumably for charging the eyes.
Solution: 1A car USB and Semaphore / fastcharge.
Thanks
Sent from my MOMO9 using xda app-developers app
Hello guys ;
I didn't see anything like it , so i decided to make a guide for a portable charger.
This is especially handy if you have leftover batteries from old phones , you can't use them on your new phone but they still function. Why throw them away ?
Instead you can make a portable charger with it. Even AA ones will work. (Rechargeable recommended but not necessary)
You would pay 30-40 dollars for a portable charger with 5200 Mah capacity , What I'm offering is 12 Dollars for 7000 Mah Capacity.
So , It's practical , has a low cost , easy to make , has a high efficiency and if you have a little creativity it would look great.
First you need to understand the mechanics of a lithium-ion battery (Which we use)
It consists of a lithium ion solution , an anode and a cathode floating in the solution.
Lithium ions will move from negative (Cathode) to positive (Anode) taking electrons from lithium ions in the process , thus making it neutral.
This process is reversed by charging , delivering a desired current to lithium atoms will ionize the solution and making the neutral atoms , ions once again.
The current always flows from higher voltage to lower voltage , that's why the chargers are usually rated 4.8-5.0 volts in the chargers , instead of 3.7 like the battery.
If you use 3.7 volts in the charger the current will not flow , it will balance and it will not charge.
Dump charging means charging a battery at a higher rate than the phone allows by using batteries.
P920 will not accept currents higher than 1 amp so you will not be able to dump charge your battery using the charge slot , instead you will use the wires to connect the charger to your battery in the right polarity.
you will need to hold it by hand but no worries the process takes about 30 seconds to charge it from 0% to %50...
It decreases the life expectancy of the batteries so use it just for urgent matters.
So this is all you need to know so far as mechanics are the concern.
Prerequisites ;
Two batteries (Can be ordered from ebay , 3.7 volts 3500 mah , perfect for a portable charger) (You can use only one. In that case , skip the first step)
Insulated copper wires (Can be obtained or salvaged from anywhere , quality ones will improve the current)
A Step-up regulator (Can be bought from ebay , link will be given)
A custom made case (Optional , You can use electric tape to seal it instead)
A soldering iron
Solder
1. Connect the batteries in parallel ;
Take a copper wire and solder it to one of the batteries' negative terminal and to the other battery's negative terminal.
Take another copper wire and solder it to the positive terminal of one of the batteries and to the other battery's positive terminal.
Now you've wired the batteries in parallel.
It will not increase the voltage instead it will couple the "Mah" ratings and the current.
2. Take out the Step up regulator and wire it to the batteries in parallel ;
Take a wire and solder it to the negative side of the batteries in parallel (Doesn't matter which but we will use that battery one from now on.) and to the step-up regulator's negative side (It's marked on the pcb)
Take another wire and solder it to the positive side of the battery (the battery you just soldered the negative side to) and to the positive side of the step-up regulator.
And poof , you just made a portable charger.
You can connect it to your phone using the usb female output plug on the step up regulator.
Now it's time to make a case for it or you could just use electrical tape to seal it off. (That's what i did)
What we did (In short) ;
We wired 2 batteries in parallel and made the current 3.7 volts and 7000 Mah.
Then we used a DC to DC Step-up Regulator to increase the voltage to 5 volts to promote the flow of current from the charger to the battery.
Then we built a case to put the charger in or we used electrical tape to seal it.
Notes and Advice ;
Cut the insulation on the wires short , otherwise you can short-circuit the terminals. (Or use hot glue on them)
Take a drop of solder and drop it to the battery terminal using the soldering iron it's enough to make the wire stick to the terminal.
Coat the wires with solder before soldering.
The polarizations on the terminals are marked on the battery sticker. (The ones that are not marked are "Ground" terminals)
The polarizations on the step-up regulator are marked on the step-up regulator's pcb (Printed Circuit Board)
Do not short circuit the terminals , ever. (Use hot glue to make sure) (Optional)
You can use any DC battery rated 3.7 volts for this. They are as cheap as 2.50$ for a 3600 Mah rated one
If you don't use the step-up regulator , you will charge slowly and only when the battery on the phone has %30 or less charge remaining.
If you have a question , please ask.
If you have a webcam or video camera , i can remotely help you build it.
If you think i missed anything , leave a comment and i will edit.
I made mine before i decided to make this guide so i will not be providing a video for it , but the users of this guide are welcome to make a video for it , i can put it on my post.
With the links i gave , it costs about 20 dollars to make , it has a 7000 Mah rating more than any portable charger will give.If you use one battery it's 12 dollars. If you use other batteries on ebay it can cost as low as 9 Dollars for 7200 Mah rated charger.
The cheaper ones on the ebay will work just as well.
Links :
http://www.ebay.com/itm/3500mAh-Ext...522605?pt=PDA_Accessories&hash=item27c6c4faed (Extended battery and it's back cover)
http://www.ebay.com/itm/370718295020?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 (Step-up regulator , rated 5 volts)
http://www.ebay.com/itm/3-6V-3600mA...802080332?pt=UK_Batteries&hash=item4609337e4c (A 3600 Mah battery 2.84$ great for it.)
Good Luck.
Cheers!
Um, why not just use the batteries as, well, spare batteries?
Sent from my LG-SU760 using xda app-developers app
LeighR said:
Um, why not just use the batteries as, well, spare batteries?
Sent from my LG-SU760 using xda app-developers app
Click to expand...
Click to collapse
Because it's more practical in so many ways than a spare battery when done.
If you don't want to do it , then don't.
But don't flood the thread with useless posts.
You think of "why nots" , i have plenty of those...
Sent from my LG-P920 using xda premium
boltthrower56 said:
Because it's more practical in so many ways than a spare battery when done.
If you don't want to do it , then don't.
But don't flood the thread with useless posts.
You think of "why nots" , i have plenty of those...
Sent from my LG-P920 using xda premium
Click to expand...
Click to collapse
Isn't it more practical to have a portable backup power supply? There are plenty of those, ho hassle, no ugly design...
Don't get me wrong, I'm also for DIY stuff, but just an idea...
BigBadSheep said:
Isn't it more practical to have a portable backup power supply? There are plenty of those, ho hassle, no ugly design...
Don't get me wrong, I'm also for DIY stuff, but just an idea...
Click to expand...
Click to collapse
First , things you make by yourself are more valuable than the ones you buy.
You cannot dump charge with the portable ones.
You'll pay at least 30-40 dollars for a 7000 mah power supply.
It doesn't have to be ugly , i'm planning to make a case out of mahogany , i'll post a picture, see if it is ugly.
Most important of all when you do it , you also learn and you don't throw it away when it is broken you fix it.
Well , to be honest i just wanted to give back to the forum that taught me so much , but now i understand why xbsall abandoned his work...
Sorry , i shouldn't have.
Sent from my LG-P920 using xda premium
Hey good job this is actually a nice idea cuz when am doing something important on my phone ..I use my phone alot for emails and such ..I wont have to turn off the phone and change batteries I just plug the charger and we can make it look nice with some creativity. Thanks alot for your work..keep it up.
Sent from my LG-P920 using xda premium
boltthrower56 said:
First , things you make by yourself are more valuable than the ones you buy.
You cannot dump charge with the portable ones.
You'll pay at least 30-40 dollars for a 7000 mah power supply.
It doesn't have to be ugly , i'm planning to make a case out of mahogany , i'll post a picture, see if it is ugly.
Most important of all when you do it , you also learn and you don't throw it away when it is broken you fix it.
Well , to be honest i just wanted to give back to the forum that taught me so much , but now i understand why xbsall abandoned his work...
Sorry , i shouldn't have.
Sent from my LG-P920 using xda premium
Click to expand...
Click to collapse
I must apologize. It wasn't my intention to cut off your enthusiasm. It's just the fact that now I'm a little...fuzzy and I didn't got the concept right. And yes, you are right in what you're saying about doing your own stuff.
Once again, sorry for being such a jerk. When you get your job done can we see some pictures, please?
Good Job boltthrower :thumbup::thumbup: .
We have a good physical here .
I used this method before with an old nokia dvice and with 6 volt 4 AH battery (too heavy) .
I didn't thought about the original battery .
Sent From My LG-P920 (ICS Ported)
Try Use THANKS Button If I Helped
OS_Hacking said:
Good Job boltthrower :thumbup::thumbup: .
We have a good physical here .
I used this method before with an old nokia dvice and with 6 volt 4 AH battery (too heavy) .
I didn't thought about the original battery .
Sent From My LG-P920 (ICS Ported)
Try Use THANKS Button If I Helped
Click to expand...
Click to collapse
Yeah this is especially handy if you have leftover spare batteries from old phones.
4 AH is really good for this , more the merrier
But if it is 6 volts you would need a linear regulator or a dc-dc converter like a 7805 , though making a dc to dc converter would be more efficient because 7805 will dissipate a quarter of the power as heat.
Sent from my LG-P920 using xda premium
Mate, I'm all for DIY stuff and think its cool you contributed, I just don't see the advantage over a spare battery, aside from not turning your phone off for 10 seconds.
If you find it useful, then that's great
Sent from my LG-SU760 using xda app-developers app
LeighR said:
Mate, I'm all for DIY stuff and think its cool you contributed, I just don't see the advantage over a spare battery, aside from not turning your phone off for 10 seconds.
If you find it useful, then that's great
Sent from my LG-SU760 using xda app-developers app
Click to expand...
Click to collapse
I don't need to justify my work to you. If you don't know why then read it plus the comments again or don't want it? Go away.
You're like an annoying pest , no matter how many you kill they always return.
Sent from my LG-P920 using xda premium
OK, if you've got nothing to contribute to the work by the OP then please don't post here as it's not useful to anyone. The OP made a decision to try make something themselves and share that back with everyone so let them continue and leave it at that.
Thanks
AvRS
I like to see such an invention here but isnt this the same like this:
http://www.ebay.de/itm/DUAL-Power-Bank-12000-mAh-iPhone-iPad-universal-externer-Akku-Tablet-Ladegerat-/310504817557?pt=Reiseaccessoires&hash=item484b878395
or this for 14 euro
http://www.ebay.de/itm/Mini-externer-Notfall-Akku-Mobil-Ladegerat-USB-Power-Station-5600mAh-f-iPhone-/160946292203?pt=DE_Handy_PDA_Akkus&hash=item25792585eb
p-vlad said:
I like to see such an invention here but isnt this the same like this:
http://www.ebay.de/itm/DUAL-Power-B...17557?pt=Reiseaccessoires&hash=item484b878395
or this for 14 euro
http://www.ebay.de/itm/Mini-externe...203?pt=DE_Handy_PDA_Akkus&hash=item25792585eb
Click to expand...
Click to collapse
It's cheaper if you make it yourself but even more so if you have old batteries lying around doing nothing.
Sent from my LG-P920 using xda premium
But isnt this method going to shortens the battery life of your.main battery?
Sent from my LG-P920 using xda app-developers app
p-vlad said:
But isnt this method going to shortens the battery life of your.main battery?
Sent from my LG-P920 using xda app-developers app
Click to expand...
Click to collapse
A very good question , i'll put it on the main post.
Not at all , it is no different than a wall charger.
The default LG wall charger for Optimus 3D P920 is rated 4.8 Volts with 1 Amp of constant current.
What we made should rate about 5 Volts and 1.5 Ampere of variant current.
Your Optimus 3D's charging mechanism will not accept currents more than 1 Amp so it will regulate it instead.
5 Volts will also be regulated by your built-in regulator to the optimum level which is 4.8 volts , a small difference that is.
sound nice. but as i know 5V by 1.5 A is 7.5W and 4.8 by 1 A is 4.8W. I am not sure but i would expect higher temperature during charging. And according to Li 3D to 2D structure it means shortening the life... As i remember 10 degree difference like 15 to 25 or 25 to 35 degree shorten the half life 1.5 times... well ofcorse this is only emergency process that you suppose (am I right?) and it is not made for every day use.,
ps. i am expert about the Li battery. maybe i am wrong.
p-vlad said:
sound nice. but as i know 5V by 1.5 A is 7.5W and 4.8 by 1 A is 4.8W. I am not sure but i would expect higher temperature during charging. And according to Li 3D to 2D structure it means shortening the life... As i remember 10 degree difference like 15 to 25 or 25 to 35 degree shorten the half life 1.5 times... well ofcorse this is only emergency process that you suppose (am I right?) and it is not made for every day use.,
ps. i am expert about the Li battery. maybe i am wrong.
Click to expand...
Click to collapse
You're partially right , it wouldn't however decrease the battery's lifespan because the output will be regulated to optimal levels before it reaches the battery.
Only way to decrease amps is to put some form of resistance in front of it , as it passes through the resistance it will dissipate the consumed current as heat.
So , the resistors will heat up (not by much) but not the battery.
It can be prevented however , by using a regulator with an output of 1A. (Can be found on ebay , radio shack)
Or a less complicated solution ;
A 3.7 volts and 3500 maH rated battery will produce around 945 mA of current , close to the wall charger itself.
So , instead of wiring batteries in parallel , you use one battery.
Another solution ,
Instead of wiring batteries in parallel , you wire them in series then use a linear regulator or a step-down regulator rated 5 volts.
Instead of your phone's resistors , the regulator will heat up
Another one ;
Don't use the Step-down regulator
It will de-promote the flow of current , you will get a really small amount of current that gradually increases as your battery's charge decreases.
However , it will not fully charge your battery , only keep it from going below a certain percentage.
In a good democracy , you never run out of solutions
Got my new moto g yesterday and its damn good but the thing that frustrates me is the charging, I got a charger with 550mA output and it takes about 4 hours to charge from scratch. I am thinking to buy a new charger and read somewhere that the max cap is of a 1.5A power supply, I need to know how much power supply should I have for maximum battery years. Should it be 1.5A or my current charger or something in between like 1200mA. Thanks in advance.
It really depends on the electronics circuit inside the moto g and also on the one in the battery.Motorola says max recommended is 1,5Ah.I`m using an HTC charger (the old ones) with 1Ah / 5V rating , its charging it for about 2hrs.Also tried with Sony 880 charger (1,5Ah, and it took ~1hr and 30 min.But what I can tell you is that if the charger is high quality one, they all follow the 2( 3 ) step charging in a nice parabola.
If I were you , I would have gotten something with higher amps, like at least 0,9-1,2 at least, cos waiting 4hrs for it to charge is a pain, otherwise it wont be a problem for the batter at all.
liveroy said:
It really depends on the electronics circuit inside the moto g and also on the one in the battery.Motorola says max recommended is 1,5Ah.I`m using an HTC charger (the old ones) with 1Ah / 5V rating , its charging it for about 2hrs.Also tried with Sony 880 charger (1,5Ah, and it took ~1hr and 30 min.But what I can tell you is that if the charger is high quality one, they all follow the 2( 3 ) step charging in a nice parabola.
If I were you , I would have gotten something with higher amps, like at least 0,9-1,2 at least, cos waiting 4hrs for it to charge is a pain, otherwise it wont be a problem for the batter at all.
Click to expand...
Click to collapse
A slow charge is likely to be best for overall battery longevity so as a balance I'd go for something around the 1amp mark. I use a .75a Blackberry Charger - takes 3hrs to fully charge from empty.
Hi,
After hours of research, I've finally bought a longer cable for charging my OPO, this one : Wooke ChargeOriginal
And to test this beautiful cable I bought a Charger Doctor too.
Here, it is why I'm disappointed ... With the Charger Doctor, I have measured the Amp many times, with different cables and different chargers and I had very strange results.
With the standard OPO cable and charger, it's most of the time charging at 0.4A. On lucky days, I can have 0.8A and sometimes ... 0.01A !
That's why I don't understand : the charger says 2.1A max and I've never reached 1A.
Then I tested with the Wooke cable : nearly the same results.
With a ASUS charger (5V - 2.1A) the maximum I've measured is 0.9A.
Other interesting fact : with an original charger (5V - 1.2A) and cable of a Nexus 4, all the results are better than the OPO's one !
So here's my question : is it possible for a custom ROM to interact with the speed of charging and do you know why I have so many differents results ?
Thanks for your answers !
And sorry for bad English !
splokow said:
Hi,
After hours of research, I've finally bought a longer cable for charging my OPO, this one : Wooke ChargeOriginal
And to test this beautiful cable I bought a Charger Doctor too.
Here, it is why I'm disappointed ... With the Charger Doctor, I have measured the Amp many times, with different cables and different chargers and I had very strange results.
With the standard OPO cable and charger, it's most of the time charging at 0.4A. On lucky days, I can have 0.8A and sometimes ... 0.01A !
That's why I don't understand : the charger says 2.1A max and I've never reached 1A.
Then I tested with the Wooke cable : nearly the same results.
With a ASUS charger (5V - 2.1A) the maximum I've measured is 0.9A.
Other interesting fact : with an original charger (5V - 1.2A) and cable of a Nexus 4, all the results are better than the OPO's one !
So here's my question : is it possible for a custom ROM to interact with the speed of charging and do you know why I have so many differents results ?
Thanks for your answers !
And sorry for bad English !
Click to expand...
Click to collapse
OPO's stock charger & USB cable should be charging at 900~1000mA.If you got around or lower than 600mA, probably either your cable or charger got problem, or the battery are nearly full. 900~1000mA is normal value BTW.
soralz said:
OPO's stock charger & USB cable should be charging at 900~1000mA.If you got around or lower than 600mA, probably either your cable or charger got problem, or the battery are nearly full. 900~1000mA is normal value BTW.
Click to expand...
Click to collapse
Thanks !
Ans do you know if the ROM can change the amp of charging ? Because I have tested different cases :
With the OPO power on, in airplane mode or not, it's charging at 0.4A. But if I power off my phone, I can charge at 0.8A ..
Sent from my Bacon