Synergy Digital Laptop Battery, Compatible with Compaq Presario CQ56-100SG Laptop, (Li-ion, 10.8V, 8800mAh) Ultra High Capacity, Replacement for HP MU06 Battery - Walmart.com
Compaq Presario CQ56-201SI LHP234 4400 mAh / 48Wh Notebook Battery - BattDepot United States