Rome Tech BIOS CMOS battery CR2032 best suits to replace your broken or non-working old battery - we provide premium quality onlyHP RTC battery compatible with such models as: HP EliteBook 1040 G4 / HP EliteBook 8440p / HP EliteBook 8440w / HP Elitebook 8460P / HP Elitebook 8460W / HP EliteBook 8540p / HP EliteBook 8540w / HP EliteBook 8560 / HP EliteBook 8560w Mobile WorkstationsEnjoy extended reliability of the HP CMOS battery and heat shrink of a high caliber - the CMOS battery will last you for a long timeThe size of the entire unit is extremely small - will fit in almost any electronic device requires 3V battery connector with 2 pins and 2 wiresQuick and simple battery CMOS installation takes only 10 minutes of your time. Try our customer service for resolving any issues during battery replacement