Before performing the following steps, please ensure UPS is not connected to the power supply.  

Step 1. In the UPS back panel, Pull the Battery Connector from its seating.
Step 2. Rotate the Battery Connector clockwise.
Step 3. Push the battery connector into the slot till it locks in position. 
Step 4. Make sure Battery Connector is properly placed in the slot.

Released for:Schneider Electric India