I decided to make a thread about this instead of adding to the numerous threads to stress the importance. I purchased my N900 the week it came out, I have been overclocking at 1.15GHz for well over a year using the same battery from 2008 (that the phone came with).

I see a lot of people here talking about battery life and the relation to voltage, overclocking, kernels, etc. I just purchased 3 Japod BL-5J 3.7V 1350mAh batteries - my battery life has increased 10x+.

You NEED TO REPLACE YOUR BATTERY! IT IS WORTH THE $7!!! TRUST ME!!! I charge every night, I bought the phone when it was released in November of 2008. That is 1095 charging cycles assuming I don't use my car charger or plug it in before I go out to the bars. In reality the real number is most likely closer to 3000+ charging cycles. Other variables such as heat and weather conditions could play a huge part. If you have ANY QUALMS WITH YOUR BATTERY LIFE AT ALL GET A NEW BATTERY - I CHOOSE A JAPOD (review here on talk.maemo.org.)

For those who are curious I am clocked at 1150MHz, I have had a VERY busy day - WiFi connected browsing for 2 hours straight, hour long phone calls, lots of camera use, lots of widgets, constant texting, screen at full brightness, etc. and I still am going strong (~35%) after 11 hours.

I should have done this a long time ago. Learn from my mistake.