D2-BAT

Data backup battery for D2-230 and D2-240 CPUs

Optional data backup battery for Koyo D2-230 and D2-240 CPUs.

An optional lithium battery is available to maintain the system RAM retentive memory when the PLC system is without external power.
Typical CPU battery life is 5 years, which includes PLC runtime and normal shutdown periods.
However, consider installing a fresh battery if your battery has not been changed recently and the system will be shutdown for a period of more than 10 days.