B31BI91 original Asus battery 42Wh - sparepartworld.com
Synergy Digital Laptop Battery, Compatible with Asus C42N1728 Laptop, (Li-Pol, 15.4V, 4400mAh) Ultra High Capacity, Replacement for Asus 0B200-02520100, C41N1728, C42N1728 Battery - Walmart.com
0B200-03050000 original Asus battery 64Wh - sparepartworld.com