darkdestroyer

"""""NOTICE"""""""

I attempted this with a 1W big 20poundish battery I got from Wal-Mart for 5 bucks. I needed a recharge station that I was going to take with me when I gave presentations off of my axim. Apparently it was something like 6Watts and blew something in my Axim. Maybe I didnt wire it right or something. Now my Axim continually hard resets itself!!!!!!!
Good thing i got accidental care plan!

Atomic Stock

Originally Posted by darkdestroyer

"""""NOTICE""""""" I attempted this with a 1W big 20poundish battery I got from Wal-Mart for 5 bucks. I needed a recharge station that I was going to take with me when I gave presentations off of my axim. Apparently it was something like 6Watts and blew something in my Axim. Maybe I didnt wire it right or something. Now my Axim continually hard resets itself!!!!!!! Good thing i got accidental care plan!

Ummm..... :jd: You probibly sent 12volts into a poor widdle' 4.8v hole and ruptured it where the sun dont shine. Im shocked you had the gutz to try again. :approve:

__________________
Axim x50v

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


"My secretary was enthralled with technolust." -Apollosmith

SteveFLHTCI

I've never seen a battery that big that was only 6W as well. Even if it was a 6v battery (doubtful), under no or very little load, it'd probably show well over 7V. Still probably enough to fry the Axim.

__________________
Lizard_weasel (Steve)
Axim X51V A01 Hardware A12 Rom
Kingston 2gb cf card
PNY 2gb sd card
Globalsat BT-338 GPS Receiver 3.1.1 Firmware

mingkee

you need a regulated power supply
use a 78m05, a 1000u/16v and a 220u/16v capacitors
it's more ideal to use DC-DC voltage regulator (constant 5v output with 3-12v input)

Snerkel

Originally Posted by mingkee

you need a regulated power supply use a 78m05, a 1000u/16v and a 220u/16v capacitors it's more ideal to use DC-DC voltage regulator (constant 5v output with 3-12v input)

If only it were that simple... the 78m05 is only good for 500mA no where near enough for the ax

pwborders

Well the Pelican Power Brick for the PSP will charge the Axim and it runs it without the internal battery going down but I noticed that the green light never comes on. So you get the orange light while the axim is running but once the power brick shuts off you are back on internal power at 100%. I didn't try starting with a dead battery and running that way, guess I will try that tommorrow.

Pete Borders

Originally Posted by mmbika

I repeated the all - 100%. Now the ABMER charging Light in turned ON - but yet it does not charge in Setting > Power. Infact battery power reduced with time. And YES the AMBER Light stays ON (as if charging. Anything wrong with my Axim X50V or soemthing else? Has anbody else sucess with this / other charging options tried at home EXCEPT DELL or other OFFICALLY sold power accessories for X50V? It doesn't charge even with 5V DC. I have tried and tested this. It charges only with Dell Cradle or Dell Power Plug in my case. I earlies had USB Sync-Charge cable which worked fine till A05 upgrade. Than it never charge although syncs correctly. What I wondered many a times is that if my USB Sync-Charged worked finr earlier why it stopped charging all of a sudden and forever? I inspected connetions and these are all OK. Is there a problem with charging circuit inside my X50v? Has anybody else has problems with USB-Sync-Charger like mine? I tries with USB port of a laptop (powered one) / another laptop / Mains-USB adapter etc and no sucess. No sucess with this 4A4 2100 mAH batteries in series.

darkdestroyer

Im guessing it's just topping the axim off every second. When you turn the axim off the battery just tops off totally and turns green.

LATEOTT

Originally Posted by mmbika

I repeated the all - 100%. Now the ABMER charging Light in turned ON - but yet it does not charge in Setting > Power. Infact battery power reduced with time. And YES the AMBER Light stays ON (as if charging. Anything wrong with my Axim X50V or soemthing else? Has anbody else sucess with this / other charging options tried at home EXCEPT DELL or other OFFICALLY sold power accessories for X50V? It doesn't charge even with 5V DC. I have tried and tested this. It charges only with Dell Cradle or Dell Power Plug in my case. I earlies had USB Sync-Charge cable which worked fine till A05 upgrade. Than it never charge although syncs correctly. What I wondered many a times is that if my USB Sync-Charged worked finr earlier why it stopped charging all of a sudden and forever? I inspected connetions and these are all OK. Is there a problem with charging circuit inside my X50v? Has anybody else has problems with USB-Sync-Charger like mine? I tries with USB port of a laptop (powered one) / another laptop / Mains-USB adapter etc and no sucess. No sucess with this 4A4 2100 mAH batteries in series.

Note that the OP used the Dell Power/Sync dongle.

It sounds like you used an aftermarket sync dongle.

Virtually EVERYBODY who has used an aftermarket charge/sync cable has had INCONSISTENT results. The only exception I know about is the Belkin accessory for the X50 series.

The Belkin accessory is either wired differently (supplies power to multiple pins, or its POWER BRICK and CAR ADAPTER supply more amperage than a laptop, computer, or non-Belkin power source.

There is nothing wrong with your Axim. There is probably nothing wrong with your cable. Your cable just supplies voltage to the wrong pin for this homemade power module.

(That is my guess...)

From what I have read, there are different power pins used for charging and syncing and most aftermarket dongles only power the sync pin. This setup is the same as using the Dell power/snyc dongle WITHOUT adding additional power (in which case the Axim will not charge below a certain voltage).

In other words it is not unexpected at all that yours doesn't work. You have triggered an Axim internal logic circuit that will not allow simultaneous charging and syncing, because not enough power is available for both.

Have you tried it with the Dell power/sync cable?

If you dont have the Dell Sync/charge dongle, try this:

-Get your cradle.
-UNPLUG the USB from your PC.
-Plug your homemade device into the cradle charging socket.
-Place your Axim in the cradle.

a) See if it charges.
b) See if it charges while it is running.

darkdestroyer

Fixed up with 4 AA Energizer 2500 mah Batteries. Charges While Running!!
3 Hours of Wifi, Backlight max, proccesor max, and still going strong!

LATEOTT

Originally Posted by darkdestroyer

Fixed up with 4 AA Energizer 2500 mah Batteries. Charges While Running!! 3 Hours of Wifi, Backlight max, proccesor max, and still going strong!

Hey, I just wanted to say thanks and to complement you on your engineering. I'll probably build one of these power packs when I have some time, and your instructions are great.

And let us know what the TSA says if you take the battery pack on an airplane... ;)

darkdestroyer

bomb.........

Seriously!
4 AA batterys with some wires hooked to a metal case.

If you guys need any more help/ photos, ill be glad to provoide. If you want a device such as this, ill be glad to make one and send it to you for a small fee.

Tim L

I'm definitely going to make one of these. Will any AA batteries work with it? Obviously the convenience of being able to get new batteries anywhere is very attractive.

HawkesNest

Or for about $15.50 total price, you could buy one of these http://cgi.ebay.com/Battery-Extender...QQcmdZViewItem

yjchung

heh.. I was gonna suggest this if you already have a dell charger adapter. Also, if you need some insane but lightweight capacity... start the project with this 9600mah Li-Ion pack. Not as cheap as AA NiMH solution but I can see myself carrying two of these (less than 1 lb for both) around in my pack to power the axim and the gps units while on a long trek.

yjchung

Originally Posted by darkdestroyer

"""""NOTICE""""""" I attempted this with a 1W big 20poundish battery I got from Wal-Mart for 5 bucks. I needed a recharge station that I was going to take with me when I gave presentations off of my axim. Apparently it was something like 6Watts and blew something in my Axim. Maybe I didnt wire it right or something. Now my Axim continually hard resets itself!!!!!!! Good thing i got accidental care plan!

I'd suggest one of those portable jump starters since most of them have a 12v cigarrette port. I picked one up from local auto parts store for about $30 on sale. It's a great portable power source.