Sony VGP-BPL15/B Lithium Ion Notebook Battery Lithium Ion (Li-Ion) - 4200 mAh - 7.4 V DC

User Reviews about Sony VGP-BPL15 B VAIO Extended Batteries for P Series Lifestyle PC (Black)

The standard battery only provides less than 2 hours with normal use. If you are interested in using the P without interruptions, you'll be very happy with the Sony Extended Battery. I estimate getting about 4 - 5 hours of normal usage. -- A Vaio P must have.

I was getting 3 hours at most with the standard battery, and have basically gotten a little more than double that with this battery. I keep the screen at 3 bars of brightness with only WiFi on and, if I leave it alone for a bit, the battery life estimate jumps to 15 hours, but that's obviously not real-world use. It's kind of nice to have two batteries and I can always go back to the stock one to make the P super slim again.

As the pictures show (I added two pics of my own), it's about twice the thickness (and weight) of the standard battery so the P is not quite as sleek but at least I can use it for a whole day on and off without worrying about it dying. My only complaint is that it went on sale here the moment I received mine. -- Adds bulk, but makes the Vaio P more useful.

After much tweaking of my P series Sony sub-netbook (or whatever you call it) I have found it to be a useful travel companion. I have put Windows 7 on it and other than the battery life was pretty happy with the mobility vs. performance aspects of the P series. After all, there was only so much performance I could expect for something so light. I finally went for the $100 battery and was glad I did, I'm getting at least twice and maybe 2.5 times the life where I now feel like I can get 3 hours of work done without fear of my power running out. With the little adaptor I have even done full powerpoint presentations. And people keep stopping me asking about "that little computer"... I recommend the battery upgrade to anyone that regularly uses their P series unplugged and that should be everyone. -- A great power boost!

I wanted an extended battery for long flights or all-day conferences. I can go a full 8 hours with this battery if I keep the wireless off and the screen at half brightness. I have a SSHD and Win7, so that helps conserve power, plus I shut the screen off after 2 minutes of inactivity. Very happy with the P series Vaio and this is a terrific battery with relatively low profile. Even with this battery, I can slip the entire computer in my jacket pocket. -- Terrific!