🔋 Power Up Your Productivity! Includes battery, no extra purchases needed 1-Year Seller Carry-In Warranty for peace of mind Enjoy extended usage with 4.9 Watt Hours Lithium-ion technology for sustainable energy Perfectly fits Sony VAIO VGP BPS21B 4.9 Watt Hours 34 x 14 x 4 cm 4 Lithium-Ion Cells The SellZone Replacement Laptop Battery for Sony VAIO VGP BPS21B is a high-performance lithium-ion battery designed to provide reliable power and compatibility with your device. With a 1-year warranty and a compact design, this battery ensures you stay connected and productive without interruptions.