Marantec’s Integrated Battery Back-Up System for Synergy 360/370/380 Garage Door Openers offers peace of mind during a power outage. Compatible with Synergy 360, Synergy 370 and Synergy 380 models, the battery back-up system provides for 10 - 12 door operations over a 24 hour time period. Plus, Marantec’s battery back-up unit is the only system available that allows for the garage door operator lights to function when the power is out. Functionality and lighting when you need it most.
 
Fully integrated 24-Volt battery back-up system
No external power cords needed
Very easy “plug and play” installation
10-12 Door operation over a 24 hour time period
Includes detailed installation instructions