I thought Li-ion battery requires constant current charging up to a certain voltage level then changes into constant voltage charging. Not sure how he does this.

Posted at 11:52 am on Feb 14th, 2006 by hb

JAmerican has been tinkering with this setup for a while now. Glad to see it posted on hackaday, as it really is pretty cool.

JAmerican is to be commended for keeping his Clie running strong! Well done sir!

Posted at 12:00 pm on Feb 14th, 2006 by strider_mt2k

9 hours of battery life! Wow, I wish my A64 notebook had that! Awesome project.

Posted at 2:14 pm on Feb 14th, 2006 by grayskies

yum….9 hours of battery life and linux…..sounds like a winning combo to me!

Posted at 4:42 pm on Feb 14th, 2006 by andrew

I used Li-polymer batteries with protection circuits. I connect them all parallel. The protection circuits allow the batteries to equalize themselves. Then I keep the EB connected to the UX so that they are always in parallel. The EB is basically apart of my unit now but I don’t complain. :) Thanks for posting this hackaday crew :)

JAmerican

Posted at 5:04 pm on Feb 14th, 2006 by jamerican

I am one of the few that jumped on the bandwagon and purchased a ux50. It’s been stashed away for some time now but I’ll gladly pull it out to try this out. Thanks!

Posted at 6:59 pm on Feb 14th, 2006 by John

When your dealing with one or two batteries by the same manufacturer, and production date. There isnt going to be much problem with paralelling a couple of them…

Laptop battery charging circuits are a bitch though, so who knows.

Posted at 7:45 pm on Feb 14th, 2006 by japroach

while its hard to tell from the pic…the thing doesn’t look too portable. I wouldn’t wanna carry around that thing in my pocket =P Maybe in a backpack, but if ur going to have the backpack, why not go for the full on laptop?

Posted at 8:19 pm on Feb 14th, 2006 by greg

jamerican, we would love to hear about all your projects in #hackaday, at efnet

Posted at 10:50 pm on Feb 14th, 2006 by fucter

@#4 andrew:
Doesn’t run linux, unfortunately.
Cool nonetheless though

Posted at 1:11 am on Feb 15th, 2006 by zilog8

They still go for $250 ON EBAY, OUCH.
For that I’d get a GP2X.

Posted at 2:03 am on Feb 15th, 2006 by shakemaster

Its more portable than a laptop. Its very portable. I do agree that it doesn’t really feel fully comfortable in my pocket but it still fits. BTW, the GP2X looks cool but it can’t access the web or manage emails. The power source would require you to purchase rechargable batteries. It looks really cool but not sure I could do as much. It also looks very large in the picture in the listing below this one on the main page.

Yea. This runs Palm OS.

JAmerican

Posted at 1:43 pm on Feb 15th, 2006 by jamerican

Don’t get me wring, this thing looks awesome, and I’d really like to have one, but just the fact that 3 years later it’s still going for $250 on the bay makes me doubt that I’ll ever really get one.

Posted at 7:07 pm on Feb 15th, 2006 by shakemaster

Yea, your right. It is still kinda high but it originally was 700 so, it still taking some time to decline. But for all the features, I think 300 or less is a great price. I spent 400 on mine but got a 1Gig stick and Metal case. I would get the GP2X and really was thinking about it but I’m a all-in-one tyoe of person. I need one device that does it all. If you think about it, the only device that has come out ad surpassed UX in specs is HTC Universal but its huge and expensive.

JAmerican

Posted at 10:36 pm on Feb 15th, 2006 by jamerican

Forgive this question if it is idiotic, but would it be possible to use, instead of 4 batteries in parallel, a PSP battery pack? They are much, much smaller and put out 3800mAh and are only $24.95.

Posted at 2:39 pm on Feb 16th, 2006 by otakucode

No question is idiotic. The PSP battery pack (which I did consider somewhat) is much thicker than the EB40’s case. I believe its the same height as the EB40 so I would never be able to fit it in the EB40 without modification to the battery itself (which I highly recommend not doing).

Posted at 6:58 pm on Feb 16th, 2006 by jamerican

Where did you get the 5 point screwdriver to open the ux50? I’ve been lookin geverywhere but can’t find one.

Posted at 3:41 pm on Jun 4th, 2006 by bhrun

i am dont see picture. :(

Posted at 11:06 pm on Jun 27th, 2008 by video seyret

i don’t see pic..

Posted at 4:30 pm on Sep 15th, 2008 by herşey varmış