found out yesterday that there’s a shuffle shortage and gadget battery life can only be expected to get worse. bummer. at least you can make the most of your waiting-for-shuffle blues and solder yourself a ‘usb battery’. this little gizmo runs off a 9 volt battery and supplies your favorite little device with the proper 5 volts of mobile power.
in lieu of running an ipod off of it, i tested it with an mpx220 smartphone and it should work fine with any low power mobile device that can charge via usb cable. read more for instructions on how to make your own.
here’s what you need to scrounge up:
-
5.1v zener diode.
-
100ohm or slightly greater resistor. all i had was a 330ohm which works. don’t try anything lower than 100ohm.
-
9v battery connector and 9v battery.
-
flat female usb connector that mates with your device’s usb cable. this is the hardest part to find. i tore mine off an old usb extension cable.
wire it up
connect everything up as shown. a board makes it easy, but in a pinch you could just wrap ends together. the top two wires go to the battery and the bottom two are connected to the female half of the usb cable i butchered. polarity matters on the diode, so check your work.
test it
connect the battery and test the voltage over the diode. it should be close to 5 volts. if not, make sure you have everything wired correctly (pay special attention to the polarity of the diode).
try it
still waiting for an ipod, i decided to grab my smartphone and kick the tires on the usb battery. as you can see in the image, the device thinks it’s plugged in. you should be able to use any low power device that charges via usb.
how it works
the zener diode conducts in the reverse direction when its breakdown voltage of 5.1 volts is reached, and the voltage across the diode will be that same 5.1 volts, so it acts to limit our 9 volt supply down to roughly 5 volts, which is what usb powers devices at.
the resistor is there to keep the circuit from shorting when the load (your shuffle) is removed. if you use a resistor less than 100 ohms you’ll know it because it will get hot. if you use too large a resistor, you won’t be able to supply enough current to your device.
finish the job
as you can see, i’m pretty nasty at soldering. i’m under strict orders from cl to keep this tiny and pocket sized for the ipod, so i’ve tried to cram everything as tight as possible. as soon as minneapolis warms up enough for the ipods to migrate, i’ll be making a custom case for this.
till then, please send in your comments, ideas, and hacks. i look forward to seeing what you come up with.
This is good for an extra PSP battey charger similar to a Pelican Power Brick(USB Charger http://playstation.hackaday.com/entry/1234000367039618/) I love it!!!
I’m working on a system which would require an ipod shuffle to play continuously for several months – in an outdoor setting without access to AC power. I had considered something like this as a power supply using a six-volt latern battery (or 2 batteries in parallel), an replacing them every few weeks. Anyone know ant reason why this wouldn’t work? Anyone have any idea how long such a battery would last in this configuration?
can you do this with fire wire as my 3rd gen ipod dont charge thru usb cheers in advance
hey i was lookin thriugh the replies n i didn c ne link on where to find female usb ports here a link for u noobs out there ;D
http://www.ntcdistributing.com/products/usbcon.htm
hey i made something similar to this in about an hour using a sony ericson 4.9v charger and an old usb extension cord. i just trimmed off the white and green wires on the usb plug nice and short. then i just twisted the red wire to the red wire as negative(correct me if im wrong) and the black wire to the black wire. it works nicely and my 2 day old ipod just got its first full charge
yo ryan,
the im7805 regulator charger with a 9v battery. it worked perfectly for my 5g video ipod.
thanks!
I just recently bought a Video Ipod. I love it for the Video, however it kills the battery to quick. Im looking for a simple On the go charger that I could keep it charging while viewing the video. This would be outsite the car or house. Rechargable battery pack type using any rechargable batteries, with the iPod connector. That would help me out. Thanks in advance.
my ipod external battery, 138 hours audio playback(theoretically :)
ps. You should use a DC/DC convertor to get 5V if you dont wanna waste power as heat!
http://www.belanger.pwp.blueyonder.co.uk/Projects/ipod_power/ipod
In Sweden I can buy a Charger that seems to work like the 4aa battery charger from bixnet.
http://www.teknikmagasinet.se/nydb/db.pl?template_file=link_product.html&link=Produktsok&artnr=040056
(79kr is about $6-7)
This one also uses 4 aa, but i wonder if it would be possible to use a 9v battery instead of the 4aa? Do you think that will work?
should iPod or usb cable be damaged if used a under 100ohm resistor? (was testing it on ipod and didnt notice it was under 100ohm and tried charging it for 30mins or so)
my ipod isnt being reconized by my windows and it now charges slowly from the USB cable pluged in to my computer
#110, Try your ipod on another computer, if it isn
I bought an ipod video too, and made a connector for use with a 5 v supply, all the voltages seem to be ok, already checked he cable, the voltaje is 4.97V (2.5A, more than enough) when connected but que ipod is not charging :(, does it have somethig to do with the usb circuit communicating to determine if it is a powered port?, do new video ipods need more than supply in the 1st and 4th usb pin? (some data?), has anyone tryed chargind their video ipods?, it charges well when connected to a pc.
#112, To charge my 5G (video) iPod, I leave it connected to the battery for a few minutes with the iPod turned off. It will begin to charge just as it would when connected to a PC.
I’ve built one of these with the 7805 5V regulator from radioshack, a mini SPDT switch from a CD player, a female USB-A connector from a USB extension cord, a 100ohm resistor, and 2 9V batteries.
Had a bunch of trouble getting a 5G video iPod to recognize it and going into charging mode. Suddenly just worked. I noticed that I had to turn the iPod off and wait a little once it was connected before it recognized the power supply and started its ‘charging’ mode.
Still a bit confused though because my optical mouse which lights up when plugged in to a live USB port does not light up when connected to my charger.
Message to all who ask about FireWire iPods:
Yes! you can do this with them. But you’re going to have to supply 12V to the firewire connector instead of the 5V noted in this tutorial.
Firewire runs on 12VDC
USB runs on 5VDC
One of the suggested methods of getting 12V is a 9V and 2 to 4 AA batteries in series
9 + 1.5 + 1.5 = 12
Alkaline AA batteries are 1.5V
Rechargable AA batteries are 1.2V
I ended up using 2 9V batteries in parallel to run my USB charger for the higher current. It’d be nice to make a charger that can supply the 1A that an iPod can take.
Man,thx…I have one more question…..can i charge a AAA battery through the USB connector connected to my PC?……..can i u help me out with this one??
THanx anyways
Anx
@115:
Short answer: Yes, but not easily
Long answer: You’d need to make/convert a charger circuit to run of 5 volts. Just hooking up teh battery to 1.5 volts with a simple regulator (like the one shown here to convert from 9 volts to 1.5 volts) will eventually result in a broken or even burst battery. You need to tightly control the charging current and make sure you don’t overcharge.
So if I were you I’d try to find a charger running off 5 volts already and just slap on a USB port.
*Small note: You USB port might not be giving it’s maximum charge – some communication ‘negotiating’ for energy might be required.
hello i’m wouter i don’t know if i typ this all correctly because i’m from holland but wathever i had a qeustion:
i made this thing of yours but i dont now if it works
but do you have a picture of this thing you made because i don’t know to wich pinn i must attach the wires on
with much thnx from:
wouter
halo ik ben wouter ik hoop dat je dit kunt lezen want ik ben nederlands ik heb ook zo’n apparaat gemaakt maar ik weet nog niet of hij het doet maar hier komt de vraag
heeft u ook een tekening waarp symbolen staan van de onderdelen die u gebruikt dat zou fijn zijn want ik weet namelijk niet aan welke puntjes ik de contacten van de usb poort moet koppelen alvast heel erg bedankt
met vriendelijke groeten:
wouter
Can everyone please speak english properly? It is very difficult to understand you if you speak like a drunk or a poorly translated video game. GRAMMAR, Please! I can’t take people who talk like they are retarded. We are all intelligent people here. Please communicate in such a way.
i have a 5g ipod and ive tried all kinds of setups for making a wall charger. The closest ive gotten was to finnally get a charge screen everytime but the ipod never actually charges. It doesn’t seem to lose charge but it definetly doesnt gain it either. Ive tried stuff with grounding the data lines but i just cant figure it out. Can somebody please tell me what needs to be done to charge the 5g via the usb cord plus a 5volt – 1 amp transformer?
I am having the same problem. I can’t seem to find info on the charging mode on the ipods. I have even tried a real 5v regulated power supply. The charge indicator comes on but still no charge.
I am having the same problem. I can’t seem to find info on the charging mode on the ipods. I have even tried a real 5v regulated power supply. The charge indicator comes on but still no charge.
My newest version that is detected by the 5G Video iPod is by taking the original circuit shown above but connecting the im7805 +5V voltage regulator between the 9V batteries and the 100ohm resistor and diode.
Hello everyone.I bought A-DATA MP3 player MF-1 and I am very dissapointed because it doesn’t have a DC connector so that i could hook it up in my car.It lasts 4 hours on AAA Alkaline batteries, so each day i buy one battery!!!I was wondering if i could power it somehow so that I don’t have to buy batteries? I made an improvizing battery with – and + and conected to the 1.5 V adaptor but it wont switch on!It has a USB type B hub as well. Could i power it through it if i ignore 23 id.est Data + and -.
Thanx a lot folks.Dit
I built a usb battery pack for my 5g ipod video using using 4 aa rechargables. I bought a battery holder from radio shack for $4 and attached the red and black wires to the red and black on a usb extention cable that I had cut off. I had the same problem listed above, #112. I connected the 2 data wires on the usb cable together. After 30 seconds the Ipod recognises the battery pack and starts to charge. The Ipod uses up the internal battery faster than the external can recharge it so after about 3hours of video you have to shut it off and allow it to recharge. I was getting less that 2 hours of video on the internal battery.
i just have a question i am planing to travel to europe the flight is like 9 hours long so i was just wondering if i can hookup an RC Battery (7.4V 3300 ahmps) instead of a 9 volt?
it’s for an ipod video
actualy is 7 cell battery pack 8.4 V and 3300 mah
actualy is 7 cell battery pack 8.4 V and 3300 mah
This is niiice. I picking up the goodies on the way home. I have a ZIP-LinQ Adapter to recharge my cell from any PC – I am thinking I can use this same method, cut out some of the middle hardware for when you’re stuck in the field – adapt the ZIPLinQ right into the battery. I like the single 9v battery – maybe a switch (like the write-lock on my USB fob?) to avoid having to remove the battery?
DC
THEN I am going to add a Solar panel!
this is the worse hack ever, i think it fried my ipod. ururururururur. i’m really mad!
pretty sweet.
I decided to make my own, complete with ABS enclosure, rocker switch, and indicator LED, soon to have the apple logo spray-stenciled onto the top. Instead of the resistor and diode, i went with the little voltage regulator, which effictively limits the incoming 9V to a mere 5V. Dont know if it works yet, my soldering iron just lost it’s charge and the unit is presently incomplete. I will send in some GIF’s once i am in a position to do so.
funny thing, but when you hook a fresh 9V battery up to an LED rated for 2 volts, it glows yellow and gets quite hot…. please excuse me, i need some ice for my index finger…..
I just bought an 1 GB iPod shuffle but I haven’t been able to charge it coz everytime i connect it to the hub (and directly to the computer too) all it does is to blink the orange light in front and the green in the back and charges no more than for a couple of hours of playing. I’m pretty sure is something in the port. After doing everything I could I decided the best way is to charge the battery by other means rather than the computer. I wanna charge it using the power supply of the computer of +5V (that’s pretty reliable) but I’m not sure ’bout how to do it w/out fry my Pod in the process (besides it ain’t as simple as connect the +5V and ground because of this thing of the charge mode)
I’d appreciate any help.
P.S. I would like to know the exact Intensity (mA,A) and Tension (V) to charge the battery and its total capacity.
i built an altoids can battery similar to this from the plans on this site, but i made some adjustments
1)i had to change the power output for my toshiba gigabeat a b size coaxial power plug
2)i installed a switch b/w the battery and the voltage regulator(used instead of the diode and resistor)
3)i tried to install a led in line, but it drained too much power
these plans are awesome great post
I’ve done some research and it seems that the LM7805 voltage regulator requires a minimum of 7 volts or something. Why do you need 7volts min. when the output is only 5 volts anyways. I would also like to know if it matters if it is undervolted. If I have 4 AA(NIMH)batteries=4.8volts connected, will it stop working or will it continue to supply the 4.8volts. Will it affect my MP3 player if it only has 4.8 volts, etc,etc?
I did some digging: the key is to connect the white and green data wires together, grounding out the #2 pins. This tells the iPod that it is connected to a “dumb” charger. My unit now runs my iPod as if it was connected to an AC source! I used the 7805 regulator.
This website has a different design with capacitors in it. What does the capacitors do and is a better design?
http://www.instructables.com/ex/i/9A2B899A157310299AD7001143E7E506/discuss.html#A:190D8416159710299AD7001143E7E506
In answer to the last poster: The capacitors provide a little bit of filtering to the output and/or input (depending on where they’re applied) of the voltage regulator, to protect against spikes in the current. They “smooth” the current of the output, averaging it out over time.
And to everybody: Using an analog voltage regulator like the 7805 is definitely an improvement over the resistor/zener diode approach, but it’s still far from ideal. The problem is that a voltage regulator of that sort basically acts as a “smart voltage divider” in that it acts as if there were a +5v output line between a resistor to the 0v (ground terminal) and a resistor to 9v (positive terminal) of the 9v battery. The voltage regulator always magically adjusts the resistance of these resistors to the right values to make the output 5v as long as the battery voltage ranges from about 6v to 9v. However, current is always flowing from the +9v to 0v line through both resistors, and thus the battery drain is quite a bit more than just that consumed by the output device itself. You can feel this difference: The voltage regulator can get quite hot! For instance, the greater the difference between the input (9v) and output (5v), the more waste power will be produced and emitted by the voltage regulator as heat. This energy is coming from the battery but isn’t driving your cell phone… it’s just wasted.
The solution is to use a “switching voltage regulator”. These connect and disconnect the circuit quickly to maintain the charge on a capacitor or inductor, rather than using a current divider. They end up producing far less waste heat, and using the energy in the battery far more efficiently. You can construct them out of five or so off the shelf parts (the centerpiece being a chip like this: http://www.national.com/pf/LM/LM2675.html,
plus a couple of capacitors, an inductor, and a zener diode), but the easiest way is to get a premade module containing all the parts already soldered together on a tiny circuit board, about 1inch by 1inch by 1/3inch. Take a look at the selection at:
http://focus.ti.com/docs/prod/folders/print/pt78st105.html
These modules have three connections and are essentially drop-in replacements for 7805 chips (a bit bigger, though), with complete switching regulators instead of the analog regulators that the 7805’s use. Approximately $9 each, but you will get almost twice the lifetime out of a 9 volt battery (that you are dropping to 5v) over what you would get out of a 7805 or out of a zener diode/resistor approach. You can also order these modules online on digikey.com and other electronics resellers. Digikey is probably the easiest way to get them, actually.
WE ARE SELLING LOTS OF MOBILE PHONES FOR VERY CHEAP PRICE AND THESE PHONES ARE THE LATEST PHONES ALSO THEY SELLS A LOT IN MARTEK SO THEY ARE AS FOLLOW””””””’
If you are indeed interested and ready to order pls contact us on the information below. Email:clasicphones@yahoo.com
Apple 4 GB iPod Mini Pink M9435LL/A ……40 USD
Apple 40 GB iPod photo………………..40 USD
Apple 4 GB iPod Mini Silver M9160LL/A ….40 USD
Apple 60 GB iPod Photo M9830LL/A……….60 USD
Apple 60 GB iPod photo ……………….55 USD
Apple 30 GB iPod Photo M9829LL/A……….50 USD
Apple 512 MB iPod Shuffle MP3 Player……40 USD
Apple 4 GB iPod Mini Blue M9436LL/A…….45 USD
Apple 2 GB iPod Nano………………….50 USD
Apple 4 GB iPod Nano………………….60 USD
Apple 30 GB iPod Vidoe……………….110 USD
Apple 60 GB iPod Vidoe……………….150 USD
X box premium console ……………… 190usd
Ps3 …………………………………220usd
Ps2 …………………………………..160usd
Contact us birect by e mail clasicphones@yahoo.com
FOR SELL MOTOROLA RAZOR V3 MOBILE PHONE AT JUST $140usd,
FOR SELL MOTOROLA RAZOR V3x MOBILE PHONE AT JUST $150usd
FOR SELL NEXTEL i930 MOBILE PHONE AT JUST $120usd,
FOR SELL NEXTEL i860 MOBILE PHONE AT JUST $100usd,
FOR SELL SONY ERICSSON P910i MOBILE PHONE AT JUST $150usd,
FOR SELL SONY ERICSSON W800i MOBILE PHONE AT JUST $140usd
FOR SELL MOTOROLA MPX 220 MOBILE PHONE AT JUST $130usd,
FOR SELL MOTOROLA MPX 300 MOBILE PHONE AT JUST $140usd,
FOR SELL SONY ERICSSON S700i MOBILE PHONE AT JUST $120usd
FOR SELL NOKIA 9500 MOBILE PHONE AT JUST $160usd,
FOR SELL NOKIA 9300 MOBILE PHONE AT JUST $130usd,
FOR SELL SAMSUNG D500 MOBILE PHONE AT JUST $150usd,
FOR SELL SAMSUNG D500 MOBILE PHONE AT JUST $170usd
FOR SELL SIDEKICK II MOBILE PHONE AT JUST $100usd
FOR SELL SIDEKICK III MOBILE PHONE AT JUST $120usd
FOR SELL NOKIA N71 MOBILE PHONE AT JUST $150USD
FOR SELL NOKIA N80 MOBILE PHONE AT JUST $150USD
FOR SELL NOKIA N92 MOBILE PHONE AT JUST $175USD
FOR SELL NOKIA N70 MOBILE PHONE AT JUST $150usd
FOR SELL NOKIA N90 MOBILE PHONE AT JUST $170usd
FOR SELL NOKIA N91 MOBILE PHONE AT JUST $170usd
FOR SELL NOKIA 8800 MOBILE PHONE AT JUST $150usd
Contact us birect by e mail:clasicphones@yahoo.com
PORTABLE, FOLDABLE and COLLAPSIBLE CRT PROJECTOR:-
DARK ROOM PROJECTOR
For use on 14/15 FLAT TV Rs3500 Includes Lens,
Holder,Focussing & collapsible link, Light mask
bellow,Inversion reflector.
With bigger size lens higher brightness Rs 5500
Picture quality: Will be dependand on your TV AND SCREEN-MATERIAL.
dhpmet@yahoo.co.in, jenideys@rediffmail.com
or call 0091-9994288723
is there any way you can make one of these with a cell phone charger, only(not a usb one)?just one that is a circul??
what would happen if i accidentely reversed the polarity going into to iPod. I did this and it wont turn on at all now, does anyone know what i can do to fix this or what to try. I figure i must have fried some diode somewhere on the main board but everything on it is really small. Please help.
MORGAN TRADING LIMITED
WE BELIEVE PEOPLE ARE BASICALL GOOD !!!
WE BELIEVE EVRYONE HAS SOMETHING TO CONTRIBUTE !!!
WE BELIEVE IN HONEST AND OPEN ENVIRONMENT !!!
WE RECOGNIZE AND RESPECT EVERYONE AS A UNIWUE INDIVIDUAL.
WE ENCOURAGE YOU TO TREAT OTHERS THE WAY YOU WANT TO BE TREATED!!!
SPECILA OFFER:FOR 3 UNITS{FROM ANY BRAND AND MODEL}SELLING PRICE WILL BE 300 DOLLARS,WITH ALL FEES FOR DELIVERY INCLUDED !!!
THANKS YOU FOR YOUR ATTENTION.
OUR OFFICE WILL BE OPEN FOR ALL YOUR WUESTIONS FULL TIME 24 FROM 24 HOURS INCLUDING WEEKENDS.
WE WILL RESPOND TO YOUR QUESTIONS AS SOON AS WE RECIEVE YOUR MAIL.
VERIFY US FROM THE UK GOVERNMENT WEBSITE. http://WWW.UKDATA.COM
END OF LINE PRODUCTS !CELL PHONES MORGAN TRADING LIMITED DECIDE TO EMPTY STOK !!! WE ONLY HAVE LIMITED STOCKS,SO GET THEM WHILE YOU CAN!LOW PRICES !!!!
BRANDS FOR SALE!!!NOKIA,MOTOROLA, SONY ERRICSION,SAMSUNG,IPODS,LAPTOPS AND XBOX !!!ALL PRODUCTS ARE NEW BRAND NEW,COME IN THEIR ORIGINAL SEALED BOX,WITH 1 YEAR INTERNATIONAL WARRANTY,FROM THE MANUFACTURE,ENGLISH,SPANISH,HUNGERY AND FINLAND MADE.
SHIPPING:WE SHIP ALL GODS BY FEDEX,1-3 DAYS DELIVERY TO YOUR DOOR STEP,TRACKING NUMBER WILL BE GIVEN TO YOU UPON CONFIRMATION OF PAYMENT.
{ALL FEES P&P INCLUDED}SHIPPING THROUGH FEDEX 1-3 DAY DELIVERY NO CASH ON DELIVERY.
EMAIL:morgantradinglimited@hotmail.com or morgantradinglimited@consultant.com
PHONE NUMBER:+447031945280.
LAPTOPS PRICE LIST:
SONY VAIO A217S– 100GB– 512MB RAM– XP HOME————-$300
SONY VAIO B1VP– 40GB HD– 512MB RAM– XP PRO————–$330
SONY VAIO T370P/L– 60GB HD– 512MB RAM– XP—————-$200
Dell Inspiron 700m ===$1020
Dell Inspiron 700M for Home (Pentium M 1.70GHz, 512MB, 40GB)== $550
Dell Inspiron 2200 for Home (Celeron 1.50GHz, 256MB, 40GB)== $400
Alienware Area-51 5300 – P4 530J 3 GHz ===$490
Alienware DHS 5 (Athlon 64 1.8 GHz) ===$590
Alienware Aurora ALX SLI ==== $400
IPOD PRICE LIST:
Apple MA099LL/a 2GB iPod Nano – Black $100
Apple Computer iPod Nano 2GB White $110
Apple Computer iPod Video 30GB White $95
Apple iPod 20GB (Color Screen) $162
iPod Nano 2GB (Black) $120
PLAYSTAION PRICE LIST:
play station 1……… $120
play station 2 ….$150
XBOX PRICE LIST:
x_box 360………$200
Xbox Video Game System Console $150
Xbox 360 Core System $100
Xbox Zenith 5′ TFT LCD Screen $50
Xbox 360 Platinum System $120
Xbox 360 “Premium Gold Pack” Video Game System $130
Xbox 360 “Core Sports Bundle” Video Game System $195
NOKIA PRICE LIST:
NOKIA 6600(UNLOCK)– US$200
NOKIA 6210(UNLOCK)– US$80
NOKIA 6230i(unlock)–US$160
NOKIA 6250(UNLOCK)– US$110
NOKIA 6500(CR)UNLOCK–US$90
NOKIA 6510(UNLOC)– US$125
NOKIA 6590[C/R]UNLOCK–US$75
NOKIA 6310(UNLOCK)– US$110
NOKIA 6310i(UNLOCK)– US$100
NOKIA 6610(UNLOCK)– US$100
NOKIA 6800(UNLOCK)– US$110
NOKIA 7110(UNLOCK)– US$100
NOKIA 7250(UNLOCK)– US$160
NOKIA 7260(UNLOCK)– US$180
NOKIA 7650(UNLOCK)– US$120
NOKIA 7270(UNLOCK)– US$220
NOKIA 7280(UNLOCK)– US$250
NOKIA 8310(UNLOCK)– US$100
NOKIA 8390 1900 MHZ –US$95
NOKIA 8800 AT JUST $140usd
NOKIA 9300 AT JUST $160usd
Nokia N70 At JUST $140usd
NOKIA N80 AT JUST $180usd
NOKIA N90 AT JUST $200usd
NOKIA N91 AT JUST $220usd
NOKIA N92 AT JUST $245usd
SAMSUNG PRICE LIST:
SAMSUNG SGH-N620– US$59
SAMSUNG SGH-A800– US$69
SAMSUNG SGH-A300(UNLOCK)– US$79
SAMSUNG SGH-R210– US$69
SAMSUNG SGH-N100(UNLOCK)– US$89
SAMSUNG SGH-N400(UNLOCK)– US$89
SAMSUNG SGH-T100(UNLOCK)– US$69
SAMSUNG SGH-S307 850/1900–US$110
SAMSUNG SGH-T500 Champagne– US$100
SAMSUNG D500 AT JUST $160usd
SAMSUNG D600 AT JUST $180usd
MOTOROLA PRICE LIST:
MOTOROLA Talkabout192– US$59
MOTOROLA V51– US$79
MOTOROLA V50– US$79
MOTOROLA V70– US$79
MOTOROLA V60– US$79
MOTOROLA V60i– US$79
MOTOROLA T720– US$79
MOTOROLA Accompli 008– US$79
MOTOROLA Timeport 280– US$79
MOTOROLA V300[UNLOCK]C/R– US$100
MOTOROLA V400[UNLOCK]C/R– US$115
MTOROLA T720 C/R[CINGULAR]–US$80
MOTOROLA V600—US$120
MOTOROLA MPX 220 AT JUST $120usd
MOTOROLA MPX 300 AT JUST $160usd
MOTOROLA V661 AT JUST $145USD
MOTOROLA V3 RAZ JUST $200USD
SONY ERICSSON PRICE LIST:
SONY ERICSSON T310(UNLOCK)– US$69
SONY ERICSSON T39m(UNLOCK)– US$79
SONY ERICSSON T66(UNLOCK)– US$79
SONY ERICSSON T616 850/1900 –US$180
SONY ERICSSON R520m(UNLOCK)– US$89
SONY CMD-Z5– US$89
SONY ERICSSON R380 World– US$89
SONY ERICSSON R380s– US$69
SONY ERICSSON T68m– US$79
SONY ERICSSON T610– US$109
SONY CMD-MZ5– US$139
SONY ERICSSON P800(UNLOCK)– US$180
SONY ERICSSON P900(UNLOCK)—US$200
SONY ERICSSON P980i(UNLOCK)—US$200
SONYERICSSON P990 JUST $210USD
SONY ERICSSON W800i AT JUST $140usd
SONY ERICSSON W900i AT JUST $220usd
SONY ERICSSON S700i AT JUST $125usd
IF YOU HAVE ANY QEUSTION PLEASE CONTACT US:
IMPORTANT:DO NOT FORGET TO INCLUDE MODELS AND PRODUCST,NUMBER OF UNIT YOU WISH TO BUY AND YOUR EMAIL ADDRESS:
THANKS
MORGAN TRADING LIMITED
+447031945280
EMAIL:morgantradinglimited@hotmail.com or morgantradinglimited@consultant.com
hi guys, i’m using mp3 player which a rechargerable batt build-in. and also using USB to charge. i go research abt the USB Voltage is 5V. 4 AA rechagerable battery. which is total 4.8V or even higher as i read some other forum that if you fully charge will get more than 1.2 (e.g 1.2++.. below 1.5V) so everall around 4.8 to 5.8V. Now is the question i wanna ask, can i just connect the 4 AA battery to the USB and charger the mp3 player? or can it just play music without charging?
hi guys, i’m using mp3 player which a rechargerable batt build-in. and also using USB to charge. i go research abt the USB Voltage is 5V. 4 AA rechagerable battery. which is total 4.8V or even higher as i read some other forum that if you fully charge will get more than 1.2 (e.g 1.2++.. below 1.5V) so everall around 4.8 to 5.8V. Now is the question i wanna ask, can i just connect the 4 AA battery to the USB and charger the mp3 player? or can it just play music without charging?
HI JASON. GREAT HACK.
I JUST GOT A NOKIA N70 CELL PHONE BUT IT DOES NOT SUPPORT USB CHARGING (REQUIRES 5V 890mA). I CHECKED THE SPECIFICATIONS FOR FIREWIRE (8 TO 33V @ 1,5 A). I WONDERING WHETHER YOU COULD POST A HACK TO BUILD UP A FIREWIRE CHARGER CABLE FOR NOKIA N70 (CHARGING THROUGH MAC LAPTOP OR FIREWIRE ENABLED PC). YOU WOULD BE THE HERO OF THE WHOLE NOKIA N70 COMMUNITY!!!
OR
DO YOU THINK YOU COULD BUILD UP A DUAL USB CABLE IN ORDER TO GET ENOUGH POWER OUTPUT TO CHARGE THE N70 CELL PHONE?
THANKS FOR YOUR ATTENTION!!!
i guess is not safe/usefull to connect 4 AA rechargable batteries directly to the player. the problem is the voltage – 4 AA make 4.8v which is below 5. i’m not sure what is the the exact voltage tolerance for the usb but 0.20v seems to be too much. besides when the batteries discharge the voltage falls down a little.
Now, what i did is a simple voltage regulator using lm2576 – used the proposed example connection in the manual. i’s really quite simple to do – requites 2 capacitors, an inductor, a schotky diod, the lm2570 and a little ironning of cource :)
The result is quite decent – you get a stabilised power supply at exatly 5.05v and you can draw up to 3a current from the battery pack.
For this solution i had to use 6 aa batteries as the minimum supply voltage ought to be = the output voltage (5v) + 1.4v = 6.4v.
It took me about 8 bugs and 12 hours to finish the device and most of the cost as well as the work was spent on the box.
Haven’t tested it quite yet (just finished it :) but my palm looks quite happy with it. In about 2 days i’ll go on a test trip – will post the results here.
Seems to me one could gut a USB hub and put the 9 volt battery in it or even NiMH cells and make the “hub” rechargable too!
Use a 7805 rated at 500ma and that will regulate the USB output to it’s intended rating.
I like the idea of the usb hub with the battery in the center. That would look very good.
hey
i have a zen vision: m, and i did this hack for both this and the version two hack. however it only sustains the power and doesnt charge it. any ideas as to how to increase the amps? or is that not what i would do to allow it to charge? please help