The Genuine Sony VAIO Battery PCG-V505 PCG-Z1 Li-ion Rechargeable Laptop PCGA-BP4V is a high-quality lithium ion battery designed specifically for Sony VAIO laptops. With a large capacity of 8800 mAh and a voltage of 11.1 V, this battery provides long-lasting power for your device. Made in Japan, this genuine Sony battery is compatible with various Sony VAIO models and ensures reliable performance. The sleek black color adds a stylish touch to your laptop while the Li-Ion technology ensures efficient rechargeability.