APC Mobile Power Pack - power bank - Li-Ion

For modem/WiFi back up, you need to keep the battery pack in place and can not take it with you if you want 24/7 120volt back up. Solution: If you buy 2 compleat units, you have double the charging capacity, can swap out the battery packs as needed and the primary modem back up can always be kept running since the UPS battery pack is "hot Swapable" . The second unit can be plugged into the WiFi/Modem back up durring extended power outages so you have twice the back up time. The pass through feature can charge double the number of devices while charging and you can take one of them with you fully charged while the second one protects you back up UPS needs. The second unit can also provide emergency lighting with 120 volt power for LED lamps durring a power outage so you can see while your modem keeps you connected.

These are wonderful to use with small, low current switches or out-of-band gear in distant IDF closets or other seldom visited remote sites, due to their *very* long lasting lithium-ion battery. I hope this portends more and more Li-ion technology in future APC products!