Is anyone having problems with their battery mod not charging to 100%? I have the Tumi mod and have had wonderful luck with it until the past couple of weeks. On three different occasions, I awoke to the mod only being partially charged. I've powered down and powered back up and it's continued to charge up once I've plugged it back into the charger. This morning, I awoke to the mod sitting at 63%. I did the power down/power up thing and nothing happened. I removed the battery, pressed the reset button, and still nothing. I have tried about everything I can think of to get the battery to acknowledge the charger, but nothing is working. The phone IS charging off the battery, and the battery is showing in my settings, so it's making good contact with the phone -- it just won't show a connection to the charger. Any charger (I've tried 4). Thoughts?