I've noticed sometimes my tablet will disconnect from internet services (usually shown when the Presence icon switches between green and red) but will still stay connected to the WiFi signal. This seems to really drain the battery. I thought had the problem solved by setting the Idle Time, but that only sometimes works.

Its usually not a problem. Most nights I run FlipClock with battery power and only drop at most 10%. However last night was one of those nights where I started at around 65% and woke up to 0.3%. Not a huge problem though, as its a rare occurence.

Will the alarm clock still kick in even if it is turned off?
If so, I'll try that as well tonight. Thanks!

With the rss feed applet you can turn the scrolling off by going to home press the menu key > applet settings > rss feed reader > and untick the automatic scrolling. I've found that I get much better battery life with it not scrolling.

If I do have a battery issue I may be tempted to get one of these: http://shop.eten.hu/mugen-power-1800...e71-p-212.html

At least the spec looks good.

@silvermountain

dude, i would say unless that foo's gonna send u a new battery as well, you really should makem him refund you.

Here's what I did with my N810 yesterday...

Went to the campus to talk to advisor, register for summer, and get my ID pic taken. (listening to music in between the key parts)

Rode with my Grandmother to run some errands, also listening to music the whole time. Also, played Doom, Bo Jackson's Baseball on iNes, and messed with the GPS for about 20 minutes, before I realized I didn't have the maps for where i was at when i was messin with it.... still listen to music.

Got home, put down the NIT. Periodically went outside to smoke, listened to it each time.

Before bed, I watched part of Bela Fleck and the Flecktones: Live @ The Quick (excellent dvd) on it... about 20 mins.

Then put it down and went to bed (left it on, didn't put it on charge).

It now has...5 days / 3 hours left on the battery.

It shouldn't matter how nice the guy is. He obviously sold it cuz it wasn't working right for him and the battery kept dyin.

Just my 2 cents.

I run with wi-fi on, on battery alone, with basically all those functions you mentioned except Mauku or GPS (as I have an N800 not an N810, so no built-in GPS), all day (~ 9-10 hours) with no battery problems. I used to be able to do that for at least 30-50 hours in the past, but now after > 2.5 years of constant use the battery is not as good as it was. So, on the second day, the battery drops down a bar.

Things that will kill the battery:
YouTube videos played in the browser. Battery soon dead.
Modest when it gets confused and claims you have no mail: Battery soon dead.
Mauku reports an error fetching tweets: Battery soon dead.

Please note that the last two will not show any undue activity in the status bar cpu load applet. I'm not sure if this has been corrected in the latest mauku release, in my case I killall mauku whenever I see that error message.

Any animated desktop applet:

Mail, mauku and/or RSS refresh rates that are frequent. Scale that ish back. The less frequently an app updates over the net the better.

To a lesser extent mmc booting can have adverse effects on battery life because the card itself can be an "additional" draw. It's been discussed here before and the effect varies with the quality of the card.

I got it for $170 and still with time to inspect it when I get the cable to reflash it this week. The battery seems to be working much better after I set a WLAN idle time of 10 mins. I've been using it for 2-3 hours now, downloading things, playing games, taking notes, etc, etc and the battery bar is still full and shows 6 hours left so I'm happy with that.

It's an amazing device. Love it

Some facts:

• GPS was probably the problem in your case. Deactivate (i.e. close any running GPS app) when not in use.
• A good quality access point supporting "PSM" will mean your tablet can stay on 24 hours or more connected to it.
• The scrolling RSS home applet stops updating (as all good apps do) when the screen blanks, to save power.
• Turning the tablet on & off takes *masses* of battery; leaving it on, but idle, is generally better.
• Some apps & applets aren't well behaved and will wake the device up every minute; or keep updating the screen even when it's off. It's difficult (currently) to identify these without some trial & error.

HTH.

Silver ... good for you !
It really is a wonderfull device !

Very often people come here to ask about battery life issues ... that came from applet/GPS/cheap wifi access points. It means that except those problems that are not Nokia's and Maemo team fault ... our tablets really rocks !