eefo i do have smart reflex and the vfs cache trick standby from 2 days still 56% (just checked that) means will stay for other 2 days standby with limited usage 4 days without charging means completely stand by phhh about 7 days until recharge i saw a post before (in previous pages) for some one said he used N900 for 9 hours heavy usage without charging using these battery tweaks