Compatible with HP EliteBook 840 G9 series laptops.

3 V lithium battery (with connector) for RTC/CMOS backup.

Helps retain BIOS settings and accurate system date/time when powered off.

Simple installation—minor disassembly required, plug in new battery.

Useful for service or repair tasks when laptop shows rtc‑error or resets on boot.

Compatible with EliteBook 840 G8 series laptops

3 V lithium RTC/CMOS battery

Maintains system clock and BIOS data when power is removed

Easy to install: unplug old battery, plug in new one—minimal disassembly required

Ideal for laptops showing “RTC power loss”, date/time resets, or BIOS defaulting errors

Compatible with HP EliteBook 840 G7 series laptops.

3 V lithium coin‑style battery (CR1620 type) with cable/plug‑in connector.

Maintains system time, BIOS configuration and RTC functionality.

Replacement for a laptop showing “RTC error” or clocks resetting.

Easy installation: unplug old battery, plug in new one – minimal disassembly.