Mini UPS for Modem, ONT, VoIP, Router

TalentCell SL3400 Mini UPS

With VoIP telephone service, battery backup of the modem, ONT (Optical Network Terminator, like a modem for fiber), and VoIP adapter are important to maintain telephone (and Internet) service during a long power outage (e.g., during an earthquake or other disaster, which can knock out cell phone service).

Unfortunately, conventional 110VAC UPS units won't provide extended runtime. (They are typically good for only 2-4 hours even with a small load.) What will work is a "mini" UPS designed to directly power 12VDC equipment; e.g., modem, ONT, VoIP adapter, and/or wireless router.

• ​Mini UPS: TalentCell SL3400 Mini UPS 27000mAh 98Wh Lithium ion Backup Battery with DC 12V/9V/5V Output for Wireless Router, Modem, LED Light, CCTV Camera, Smartphone and More
• ​Power Tip Adapter: IBERLS Universal 5V DC Power Cable, USB to DC 5.5x2.1mm Plug Charging Cord with 10 Connector Tips(5.5x2.5, 4.8x1.7, 4.0x1.7, 4.0x1.35, 3.5x1.35, 3.0x1.1, 2.5x0.7, Micro USB, Type-C, Mini USB) [depending on what tips you need for your equipment]
• Review: A good backup for powering fiber internet (TalentCell Mini UPS)
  

If you have a wireless router for your Internet service, either rented or purchased, while it may be able to share a mini UPS with a modem or ONT, it's better to put it on its own UPS so as not to reduce modem or ONT runtime.