Camera is offline battery streght is 2 out of three bars

[ejo142015]

I have had my system under a week, until yesterday all worked well until one of my cameras went offline. I brought the camera back to the base to sync, the blue lights flashed 10 times then and then real fast and snyced just like when I originally set it up, for a few minutes the camera showed as online in my arlo account, then went offline. I repeated this process a few more times and it continues to go offline, please advise. 

[ejo142015]

Looks like it was a battery issue, even though I put brand new Duracell Ultra Lithium batteries in the camera instead of using the ones that come with it, which cost $36 at CVS for 8, I bought Streamlight batteries for 1/3 the cost on Amazon and the camera is back up and rolling.