Small Sprouts Mini UPS DC 5 V 2 A - Uninterruptible Power for surveillance cameras, Mini PCs and other USB powered devices

I bought this to power a Yale keyless smart lock in our holiday home in Spain. Much better than constantly replacing batteries and the output, tested with a multimeter, was 5v and easily managed a 5m bell wire cable run to power the lock. Works flawlessly and manages to power the lock for several weeks should the mains supply fail.Seems to have a good battery management system that prevents over charge and damaging the cell on depletion. The option to replace the Lithium ion cell is a great bonus.Can't fault this product for my needs.