Synergy Digital Laptop Battery, Compatible with Asus R510L Laptop, (Li-ion, 14.4V, 4400mAh) Ultra High Capacity, Replacement for Asus A41-X550, A41-X550A Battery - Walmart.com
Asus A41-X550A LAS249X 4400mAh / 63Wh Notebook Battery - BattDepot United States
Amazon.com: Fancy Buying Laptop Battery for ASUS X550 Series, X550A, X550B, X550C Series, X550CA Series Laptop Battery Asus A41-X550A X550 X550C R510C X550A X550D X550J X550CA X550JK A41-X550 X550CC : Electronics
External Laptop Battery Charger for ASUS X550CA X550CC X550LA X550LC, – direct-charging