Asus X550CA Battery Replacement - iFixit Repair Guide
Amazon.com: Laptop LCD Top Back Cover and LCD Front Bezel Cover for ASUS X550 X550E X550C X550VC X550V A550 Y581C Y581L K550V R510V R510C R510L F550V F550C (LCD Top Back Cover) :
Genuine A41-X550A Battery for Asus X550C X550CA X550CC X550B X550VC X550D New Laptop Batteries / AC Adapters - Newegg.com
Battery for Asus CA-CJ860H X550CA/CC X550VC-1A X550LD-7G A450E47JF R409JB X552W | eBay