Original Battery for ASUS X52 X52F X52J X42 PR067 PRO5I PR08C P82 P62 K52L681 | eBay
Synergy Digital Laptop Battery, Compatible with Asus X52J Laptop, (Li-ion, 11.1V, 4400mAh) Ultra High Capacity, Replacement for Asus A31-B53 Battery - Walmart.com
Amazon.com: DR. BATTERY A32-K52 Battery Compatible with Asus K52F K52J A52F A42-K52 X52F K52 K42F X52J A52J A42J K52JC A41-B53 A41-K52 A32-K42 A31-B53 A31-K42 A31-K52 A32-B53 [10.8V/4400mAh/48Wh] : Electronics