This is not a question of theory, but of experiences. I am a user of Nokia N900. I'm using the original battery now, as well as a unofficial one named MBT-5975 ($3.16) as an alternative. They have been used for about half a year, but at least by far, i've find no difference between them in terms of endurablility and security.

are you guys serious?do you really want to put a 5 dollar chine crap battery in your 550 euro n900?that would be like drive your ferrari with selfbranded wodka

commmon guys if your phone explodes or start burning i would only sayn:

HAAAHAAA!!!!!!!

I just bought a BL-5J from this guy
http://shop.ebay.com/jasontobeeasy20...&_trksid=p3686

It's Genuine and cheap.

Until it explodes and burns the house down

Yep, just like the guys that were laughing when we used leaked PR1.2. But we got the last laugh with that one; there were just as many problems or more with the official PR1.2.

I'll let you know if my N800 using cheap batteries or my N810 using cheap batteries or my N900 using cheap batteries explodes or starts burning.

How many users have mentioned exploding and burning the house down on this site?

Would that be like the people whose N900s have been destroyed thru overclocking?

I think you need to up the level of rhetoric to get people's attention.

Start talking about batteries exploding and burning the house down and killing their pets. That might work.

And by the way, don't forget to do a comparison of how many people claim their REAL Nokia batteries have malfunctioned. I'm sure Nokia will release that information.

They died in the fire before they were able to post a warning here

The OEM product is really better than others.

For Pete's sake it's a LiIon cell from 2010 not a block of Tri-nitro toluene