Charge every cell phone and battery that you have up until the storm arrives. Then with the power out, turn them off most of the time. You might pre-arrange a time for concerned relatives to call you when they know you will have it on. Maybe every hour on the hour. If the towers are down at first, there will be no need to use your cell phone. One thing we discovered during Charlie was that my mom's cheap prepaid Tracfone was able to get a signal when neighbors who used the big carriers couldn't. Something about Tracfone being able to use multiple towers from multiple carriers. It was an unexpected bonus of a cheap phone/plan. Also, get any loose lawn debris out for collection if they will come by before the storm and bring in anything that you usually leave outside and that could get blown around.