This is a brand new Sony replacement battery with extended run capacity. The superior cells inside this battery pack make this a longer running and longer lasting battery pack for your Sony laptop.

The added run time is achieved with an additional 3 cells inside the cartridge. This longer running battery will extend to the bottom of your laptop about 1 inch. Users of this battery pack experience an additional 1-2 hours of run time over the standard battery. Estimated run time with this battery is 3-5 hours. Longer run times can be achieved by minimizing the power use, especially the screen brightness.

The superior Sony cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, 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.

The additional cells contained in this battery will protrude to the bottom of your laptop about 1 inch and add about 5 ounces of additional weight. The added height will also provide more space for air circulation and cooling underneath your laptop. The battery is designed to fit perfectly into your laptop and includes rubber feet which will rest on your table surface. Not all computer batteries have the same capacity and run times. The higher capacity battery cells inside this cartridge have an energy capacity of 6600 mAh. These are the highest capacity Li-ion batteries on the market today and superior to batteries rated at 4400 & 4800 mAh.

This battery replaces the Sony Vaio Z500, Z600, Z700, Z800, VPCZ110, Z11x, Z12x series laptop batteries and additional machines which are listed at the extreme bottom of this web page.