If you want your $10 batteries to last five years, you are probably out of luck. If you are perfectly happy with forgetting to charge your battery and waiting a few hours before you can use your tablet, you don't need a battery.

But I wouldn't be without my $20 worth of spare batteries, all two of them. They have worked perfectly and after almost a year's intensive usage (each battery has typically been charged at least once a day for more than 300 days), I can't tell the difference between the real Nokia battery and the fake Hong Kong batteries.

One thing having a spare battery is especially good for is reviving a Nokia that has gone dead overnight. Just put in a fresh battery and in the time it takes to boot up, you are good to go. (Unless you have a defective tablet, of course.)

I did also invest in a $10 battery charger, which even works on the real Nokia battery. It is also still working perfectly.

As I have commented before, I virtually never plug my N800 in. I have been relying only on the batteries. It seems too clunky to me to be plugged in, so I have to actually unplug if I'm listening to something on my N800 and I want to go down and visit the fridge. Puhlease! I just grab it and go.