The HP 902383-001 RTC battery is an internal replacement part for the HP x2 Detachable PC and HP x2 210 G2. It supports the real-time clock and is separate from the tablet’s main battery.
It is a 3V lithium-ion battery with a 12.5 cm cable. Inside the device, the cable connects the battery and an adhesive attachment holds it in place; servicing involves disconnecting the cable and lifting the battery from the adhesive.
This part is intended to replace the RTC battery in the listed HP x2 models. Its cable-connected, adhesive-mounted arrangement describes how it is fitted inside the device.