Hi Robert, Thank you for your patience while I got back to you. I've pinged our Internal Operations Manager to get your battery swap on the calendar this week (if not next). The flickering lights wouldn't be a result of the battery installation but are more related to this cold rainy weather we've been having. Talk soon, Ally Basham Sr Project Coordinator (707) 347-9312 *Production Department* | Simply Solar (707) 285-7037 <7072857037> http://www.simplysolarca.com/~production www.simplysolarca.com 1740 Corporate Circle, Petaluma, CA 94954