Remove and replace the complementary metal-oxide semiconductor
(CMOS) battery.
Replacing a Lenovo Storage V7000 Gen2 CMOS battery
The complementary metal-oxide semiconductor (CMOS) battery is a coin-shaped power cell that is mounted inside a node canister. It is used to keep the system time when there is no power to the node canister. The lithium battery must be handled correctly to avoid possible danger. If you replace the battery, you must adhere to all safety instructions.