D2-BAT-1

Data backup battery for PLCs

Optional data backup battery for Koyo DL06, D2-250-1, D2-260, D3-350 CPU, Productivity PLCs and CLICK C0-01Dxx-D and C0-02Dxx-D PLC units.

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.