Synergy Digital CMOS/BIOS Battery, Compatible with Acer TravelMate 250 CMOS/ BIOS, (Lithium, 3V, 200mAh) Ultra High Capacity, Replacement for HP 417076-001 Battery - Walmart.com
TravelMate 5520/5520G/5220/5220G Series Service Guide
TravelMate 5520/5520G/5220/5220G Series Service Guide
Acer Travelmate 2420 노트북 분해(Laptop disassembly) - YouTube
ACER TravelMate 4010 laptop take apart video, disassemble, how to open disassembly - YouTube
Acer TravelMate 2300/4000/4500 Series
Replacing the CMOS battery - Acer TravelMate 7730 7730