ok, i've had the gold battery now for about 3 days.

So far, I'am impressed. Ok - no way is it a 1920mah one.

Yesterday, after a full charge - showing 95%.

Watched about 45mins of a show on it, along with constant email checking and web browsing throughout the day.
I also have a script run at 7pm that transfers file from my nas to the n900.
At 9pm a script runs that shuts down wifi.
At 7am script runs to re-enable wifi
At 7.15 - script runs to reboot the n900.

I checked it at 7.45am, and its showing at 28% still left.

So now for its my primary battery with the original as backup.

Scott