MR1100 - Can it charge and operate from a 900ma power source?

It's recommended to keep the power source to spec as listed on the power adapter. 

Netgear has set up a community forum specifically for the Mobile Router products. Most of the people who watch that forum are more likely to have experience with mobile routers and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Mobile-Routers-Hotspots-Modems/bd-p/aircard
Thank you