The APC Back-UPS Connect CP12142LI is an uninterruptible power supply (UPS) that is specially designed to power compatible routers/modems for prolonged periods of time during a power outage. APC by Schneider Electric introduces an internal lithium-ion battery design which allows for a compact and lightweight design, while maintaining an extended runtime up to 12 hours.

• Power Efficiency: Energy efficient design allows it to run at up to 85% efficiency, which saves utility costs while reducing heat to promote longer component life
• Compact, Lightweight Design: The lightweight and compact design of the Back- UPS Connect CP12142LI allows it to be convenient and discrete in any indoor environment
• Lithium-ion Battery: The lithium-ion battery inside your CP12142LI has a significantly longer service life than traditional lead-acid batteries typically used in battery backup solution
• Battery Capacity LEDs: 4 LEDs for simple and fast identification of remaining battery life

Output Power in Watts / Average Runtime in Hours 7 Watts / 16.3 Hours 11 Watts / 10.9 Hours 14 Watts / 8.3 Hours 22 Watts / 5.5 Hours 38 Watts / 3.1 Hours

Manufacturer info at https://www.apc.com/us/en/product/CP12142LI/network-ups-12vdc-lithium-battery19500mah-bms-4led/

Comes with 5.5/2.1mm plugs/sockets and adapters to 5.5/2.5mm if your device uses that size. In original box with manuals.

Since this is a giant pack of Li-Ion batteries it can't be shipped but will need to be picked up, unless you can arrange a courier that will carry Li-Ion batteries.