Well, that's just scary. Lol. I've seen that happen on my OEM blackberry battery. But I've had the berry for 3 years :P I'm surprised the battery has lasted me as long as it lasted! Lol. Oh well.

Well, regarding the larger capacity, I've seen applications (for Windows Mobile) that actually tell you the mAh expended in real time. So I kept that app open, and watched movies until the battery died. That was my test. usually +- 20 mAh is acceptable to me. But since this is Maemo, and I've never seen this OS at all or have looked for apps available as they're in repositories, I can't really check. But it's strange to find an app to monitory mAh consumption.

Regardless, it's all about trial and error. Since that battery is listed to be compatible with a 5800, would anyone dare to try it out? I would, but I don't have a 5800 Otherwise I would do it.

I'm soo pumped about the N900, I'm already buying backup batteries :P. This is going to be a great phone, as long as the keyboard is decent. And I'm going to need to get some decent battery life as well, even if I have to put it in GPRS/EDGE mode. On my Blackberry Bold I can't get a full day out of 3G. I doubt the N900 will be able to on a larger screen & with 3G on. So that's why I'm planing on getting the spare batteries. I'm thinking about buying this 1930 mAh battery. It's a really low investment :P until seidio comes out with one (doubt it, but they make EXCELLENT extended batteries).