If you are still using UX40 or UX50, you will sure find that the battery life of these units really give it away. That is why Sony came up with another way of “make you pay” device: PEG-EB40. With this external battery, the battery life of your device should last for 2~3 times longer. However, EB40 is not only bulky, but also requires the cradle to charge. Unlike other Palm or Clie devices, the cradle for UX series only serves the purpose of charging, nothing else. Therefore, all UX users have to bring along their charger and cradle for their trip for charging both UX and EB40. For this reason, making both UX and EB40 to have USB charging capability is really convenient. However, this is only advisable to those units that have no more warranty.
Warning: Do it on your own risk. I take no responsibility of any data lost or hardware damage.
Warning: This will void the factory warranty (if you still have one)
Warning: If you do not know what you are doing, you might kill your Clie
Warning: Always disconnect the battery before performing any operation to avoid short circuit.
However, you can avoid touching the actual UX device by modding the EB40 alone. By doing so, EB40 will act as your cradle with power supplied by the USB cable. At the same time, it can charge your UX device as well. Please note that charging from USB cable takes a longer time due to the current supplied by your USB host controller is much smaller than your Sony charger.
Now, it is time to mod the EB40. First, you have to get a mini-USB female connector and solder the mini-USB connector with red wire to Positive and black wire to Ground as the photo shows. http://img408.imageshack.us/img408/7459/image17zp.jpg
Then, connect the red wire to red wired charging pin and black wire to black wired charging pin and test the charging connection http://img408.imageshack.us/img408/830/image29ub.jpg
Next, place the mini-USB connector to the case, same side as the “release latch” http://img408.imageshack.us/img408/572/image38bh.jpg
Place a plastic sticker to cover the connector to prevent short circuit http://img408.imageshack.us/img408/397/image45uu.jpg
Put back all the screws and test the charging function again http://img408.imageshack.us/img408/705/image56ey.jpg
Now, start drilling a hole and file the hole to fit the mini-USB connector in the bottom cover of EB40 http://img408.imageshack.us/img408/9026/image69ap.jpg
Finally, put everything together. You can now kiss your charger and cradle goodbye as the EB40 can now be charged by your hotsync cable and supply power to your UX device. http://img408.imageshack.us/img408/6560/image76nn.jpg