This is a new battery that replaces the Sony VGP-BPS27 battery.
We use the highest quality lithium-ion cells and battery components that run longer, charge faster, and weigh less than cheaper, lower quality batteries. Lower quality batteries are made with inferior cells and parts that can wear out in as little as 6 months.
Our batteries are built with Samsung battery cells and Texas Instruments components. Each battery is backed by a 2 year warranty and 30-day money-back guarantee.
Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity.
The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 year warranty which is twice the original Sony warranty.
You can expect about 3 - 4 hours of run time with this computer battery when new, depending on your energy use.
This battery replaces the Sony Original VGP-BPS27 laptop batteries and additional machines which are listed at the extreme bottom of this web page.
This battery is used on these various families of laptops: