This is the Battery Backup Power, Inc. Uninterruptible Power Supply or UPS for the 3D Systems ProJet 3510 SD 3D Printer. It automatically corrects voltage problems that may damage or degrade the performance of your 3D printer and provides surge protection with temporary backup power for when power outages occur. This UPS is sized specifically for the 3D Systems ProJet 3510 SD and if fully charged at the time of an outage, it will run the 3D Systems ProJet 3510 SD 3D Printer for 10 minutes and 00 seconds on battery power. Additional add-on options include a single extra external battery cabinet which increases the run time to 30 minutes and 00 seconds or two extra external battery cabinets which increase the run time to 50 minutes and 00 seconds. This gives the user time to start up and direct connect a generator to the UPS, allow an automatic transfer switch to change to generator power, or safely power down the 3D printer.