I have a BTT UPS 24v installed on all of my printers. Battery backups suck because they have a finite amount of time allowed for a print to finish. Even a 3 day long print that just started hours ago can be saved in a power failure if only the BTT UPS 24v was installed..



On this printer I have mounted the UPS under the frame rail. Tucked away and out of sight it is always ready to save my prints whenever the power failure comes and without any big bulky or heavy battery backup sitting on the floor or next to a power outlet. Just this..



For anybody interested in the extrusion mount in the above picture it can be downloaded right here: BTT UPS 24v Extrusion Mount by AutoWiz - Thingiverse