Amazon.com: Dentsing VGP-BPS31 (7.4V 37Wh/4960mAh) Laptop Battery Compatible with Sony Vaio Duo 11 SVD112A1WL SVD112A1 Series Notebook A1904330A : Electronics
Sony Sheet Battery Extended Battery for VAIO Duo 11: Amazon.de: Electronics & Photo
Batteria 5200 mAh compatibile con Sony Vaio PCG-71211M PCG-71212M PCG-71213M PCG-71311M PCG-71313M : Amazon.it: Informatica
Amazon.com: TanDirect New VGP-BPS30 Replacement Battery Compatible with Sony VAIO SVT-13 SVT-11 T13 T11 VT13117ECS (11.1V 4050mAh 45Wh) : Electronics