Is there any battery inside ovation hardware controller?

As we know, normal PLC controller shall have battery or capacitor inside hardware to hold the control logic program in memory for certain days even though power supply is not given to controller. The control logic will erase automatically after certain period if power supply is not given at all. Similarly, is there any battery or capacitor in ovation controller to store the control logic program even though power supply is not given to controller? How long logic program will be stored in the memory of ovation controller with out power supply.