This comprehensive guide breaks down the key differences between uninterruptible power supplies (UPS) and battery energy storage systems (BESS). We explain their functions, benefits, applications, and costs—plus real-world use cases and future trends. . An uninterruptable power supply (UPS) is a type of backup battery that will continue to provide electrical power to the electronics that you have plugged into it even if electricity from your home outlets cuts out. Unlike a backup generator, it does not need to power up in order to start generating. . Our AI beta will help you find out quickly. Did You Find It? Search Newegg. com for uninterruptable power supply. Get fast shipping and top-rated customer service. . N1C. L3000 Uninterruptible Power Supply (UPS), 3kVA (3000VA), 2700W, 120V, Lithium-Ion (LiFePO4) Battery. 11-min Runtime at 100% Load. 11-min Runtime at. . A power outage can be anything from an inconvenience to an existential threat - and wherever your application falls on that scale, an uninterruptible power supply, or UPS, can help. A UPS provides an always on power source that will help keep your most important data and sensitive electronics safe. . Price when purchased online. Shop for UPS & Battery Backups. Buy products such as APC UPS 450VA Battery Backup Surge Protector, BN450M Backup Battery Power Supply, 6 Outlets at Walmart and save. For home users, a UPS can protect desktop PCs, gaming consoles, and smart home devices from unexpected power cuts. In business settings. .