8800mAh laptop battery for HP Pavilion dv6-2100 dv6t dv6z for COMPAQ Presario CQ50-100 CQ40 CQ41 CQ45 CQ50 CQ60 CQ61 CQ61z CQ70 - AliExpress
HP Pavilion ZE4500/Compaq Presario 2100 CMOS Battery Replacement - YouTube
High Quality Compaq Presario 2100 Replacement Battery | Laptop Battery Direct
Compatible For COMPAQ Presario 2100 CMOS RTC Battery - Newegg.com
Amazon.com: DR. BATTERY F4809A 319411-001 F4812A Battery Replacement for HP Pavilion ZE4400 ZE4800 ZE4900 Series Compaq Presario 2100 2200 Series [14.8V/65Wh] : Electronics