Just get a normal UPS with an electric plug.
Pros:
-You won't be limited in router selection or any low powered appliance
- It will last much longer
- You will save your device from power surges
- Easier to find and replace battery
Cons:
- Uses more space
Pros outweighing the cons
Pros:
-You won't be limited in router selection or any low powered appliance
- It will last much longer
- You will save your device from power surges
- Easier to find and replace battery
Cons:
- Uses more space
Pros outweighing the cons