OESF Portables Forum

Everything Else => Sharp Zaurus => Model Specific Forums => Distros, Development, and Model Specific Forums => Archived Forums => C1000/3x00 Hardware => Topic started by: mowgly on March 20, 2007, 05:10:46 am

Title: Battery Dead ?
Post by: mowgly on March 20, 2007, 05:10:46 am

Hello,

My zaurus C3K has a very bad autonomy, something like an hour... In fact when I received it, the Z didn't want to turn on, so I've changed my power supply polarity.

The problem is that I've heard that the Zaurus doesn't have polarity protection.

On my battery it's written "3.7V" and my adapter was set on 4.5V until now.
My actual polarity is -o)+.

Is it bad ?

Thank you

Title: Battery Dead ?
Post by: portalgod on March 20, 2007, 10:17:05 am

May not be that bad, but it certainly can't be good

Title: Battery Dead ?
Post by: mowgly on March 30, 2007, 06:02:15 am

Ok, I've bought a new battery but I don't want to burn it again with a polarity problem, is my polarity --> -o)+ <-- ok ?

Title: Battery Dead ?
Post by: pelrun on March 31, 2007, 09:59:37 am

The Zaurus AC socket is tip-positive. (so +o)- )

Reversing the polarity doesn't damage the battery, it damages the zaurus, instantly blowing one or two fuses in the battery charging circuit.  You'll almost certainly find your Z won't charge your new battery.

There's a couple of threads about obtaining and replacing the fuses; although I'm not sure if there are any photos of the fuses in a c3000k atm.