Amazon.com: Bay Valley Parts A41-X550A A41-X550 Laptop Battery for ASUS X550 Series, X550A, X550B, X550C Series, X550CA Series X550 X550C R510C X550A X550D X550J X550CA X550JK A41-X550 X : Electronics
Synergy Digital Laptop Battery, Compatible with Asus X550C Laptop, (Li-ion, 14.4V, 4400mAh) Ultra High Capacity, Replacement for Asus A41-X550, A41-X550A Battery - Walmart.com