Been there, done that sixwheeledbeast.

* my battery is new, holding a decent charge
* "problem" is more my usage pattern. The N900 is used for tracking down Wifi spots, constantly "on" (connected), either via WIFI or via my provider's INet connect, audio recording and and and and ...
* of course I've an external power pack, a propper USB-charger in the car etc.etc.

But howling around my anker 20.000mAH powerpack (twice the size of the N900, nearly double the thickness of it) with the N900 and having that connected is just ... suboptimal.

Also, quite often i'm dragged into troubleshooting-meetings on pretty short notice, and then I normaly just have my A5 notebook, my spacepen, a pocketknife and my trusted N900 with me.

so, yes, I've looked into the other solutions and apply them. But haunting for the optimal solution I'd like to get back to the Mugen cover / similiar to better survive the "off-grid" time with the N900.

thanks

peb