Amazon.com: Vertiv Liebert Power-UPS Lithium, 400VA/240W, 120V, Lithium-Ion, Standby UPS, (4) NEMA 5-15R outlets (3 Battery Backup), Energy Star Certified, Compact Lightweight (PUL-400LVT) : Electronics
Amazon.com: TalentCell Mini UPS Uninterrupted Power Supply 27000mAh 98Wh Lithium ion Backup Battery with DC 12V/9V/5V Output for Wireless Router, Modem, LED Light, CCTV Camera, Smartphone and More : Electronics
Testing the UPS with Li-ion battery - YouTube
Lithium Battery UPS Power Bank Backup UPS Portable Power Station UPS with Li-ion Battery - China Power Bank, Lithium Battery | Made-in-China.com