I went to check my 3 batteries for my P4P+ today after about a month in storage. Even though I had 2 solid and 1 flashing LED on all three I put them on the charger to make sure that was true. One of them started flashing like normal indicating charging, but pretty quickly went to 2 and then 1 LED and then turned off completely and now isn't charging. Upon visual inspection I can see that the center 2 cells are puffed by looking through the side vents. What is the best course of action for this battery? Do I send it to a repair facility to get the cells replaced? Or is this not cost effective and I should just pitch it and get another? Any input would be greatly appreciated.