Blue Raven 14.8V 4800mAH Lithium-Ion Battery
Sony
Product ID: 62148

 This  rechargeable Li-Ion battery features the power of 14.8 volt and 4800mAh of pure power for your Sony computer.  This Sony replacement battery is compatible with the following:

Models:
Vaio PCG-K17
Manuafacturer Part Numbers:
PCGA-BP2NY, 175639051, A8120052A
Battery part Numbers:
S2NXY

More Info

VGN-Sxx 11.1V 5200mAh 6-cell Battery
Sony
Product ID: 62772

 This  rechargeable Li-Ion battery features the power of 11.1 volt and 5200mAh of pure power for your Sony computer.  This Sony replacement battery is compatible with the following:

Models:
Vaio VGN-S150, Vaio VGN-S360, Vaio VGN-FS640, Vaio VGN-SZ12P, Vaio VGN-FJ1, Vaio VGN-AR1, Vaio VGN-FS5
Manuafacturer Part Numbers:
A1072507A, A1072506A, A1114326A, A1204545A, 175653122, A1158657A, A1178587A, VGP-BPS2, 175646912, 175646913, 175663241,175663433, 175653151
Battery part Numbers:
VGP-BPS2

More Info

PCG-Z1A 11.1V 4400mAh Battery
Third Party
Product ID: 67953

 This  rechargeable Li-Ion battery features the power of 11.1 volt and 4400mAh of pure power for your Sony computer.  This Sony replacement battery is compatible with the following:

Models:
Vaio PCG-Z1A, Vaio PCG-V505
Manuafacturer Part Numbers:
A8114137A, PCGA-BP2V, 175632821
Battery part Numbers:
PCGA-BP2V

More Info