Yes it will, but the question is, how long? How long do you want it to last? An hour? 3? 6?
Here's a handy link which helps you figure out what to get.
https://convert-formula.com/mah-hours
It depends on the voltage. If your CPE and Router are both 9v or both 12v then it will. Personally though, I'd go with the Ratel 418. Same price but has more ports. And, stock is available.