I'm not sure I understand the problem either. My unit is a Medtronics & I use a special sticky pad to keep the charger in place over my battery. Before my rep gave me the sticky pads & before he showed me how to place it so it got the best signal, I did have problems with the charger not connecting to the battery on occassions. I'd have to agree with Frances, the best thing to do is to call & speak with your rep in the morning. It might just be a simple issue with the placement of the wand, or something else that can be easily fixed over the phone.
ps - I'm so glad to hear that your swelling is down!