HP taps Boston Power’s long-life li-ion battery for laptops

All my Thinkpad batteries have degraded to 50% of initial lifetime within the first six months. If Apple's don't do that, I'd bet they are made of unobtanium. I wish the PC reviewers would run some extended battery life tests--running 50, or even 100, 12-hour charge-discharge cycles taks a while, but not a prohibitive time.

This is what I complain, medias including this one copy only public relation papers from theit appetizing customers without checking the content, which should be their responsibility in front of their readers to be serious.

I think Boston Power's CEO is greatly overstating the rate of degredation of conventional laptop batteries. For example, Apple says that its laptop batteries (which come from the same suppliers that other OEMs use) are rated to retain 80% of the rated capacity after 300 full cycles. www.apple.com/batteries/notebooks.html Lampe-Onnerud's description, by comparison, suggests the 80% point is somewhere around 24 cycles. To me, this means Lampe-Onnerud is simply lying in order to make her batteries seem better. Also, your statement that Boston-Power's batteries "supports at least 1000 charge-discharge cycles before experiencing any degradation in its charge capacity" is contradicted by the datasheet linked under "technical specifications" on the Boston-Power website, which states that there is a 20% degredation after ">800" cycles. www.boston-power.com/assets/documents/2008-08-19_Sonata_Datasheet.pdf Further, the datasheet figures say that the energy density of the Boston-Power batteries is 177 WH/kg (4.4AH * 3.7V / 92g), which is lower than some competing batteries, which come in at 200 WH/kg or more. It would be interesting to compare the rated capacity of otherwise equivalent HP laptop batteries (in size or weight) between conventional and Boston-Power cells. Perhaps you could post a followup at some point dealing with these issues? . png