Battpit Dr. Battery Advanced Pro Series Laptop / Notebook Battery Replacement for Gateway NV78 Series (4400mAh / 48Wh) Type: 11.1 Volt Li-ion Advanced Pro Series Laptop Battery Capacity: 4400mAh / 48Wh Condition: New 30-Day Money Back Guarantee. 2 Year Warranty 800+ charge cycles, with LeydenEnergy Battery Cell This battery only compatible with 10.8V and 11.1V version.Not compatible with Aspire 8930 Series models.