I took my I2 out today after it was sitting for a number of months (long story... due to an injury). Normally I fly a lot but life got into the way. The aircraft wouldn't start and I saw it said broken cell. I only have 28 cycles on this pair but they're over a year old. What can I do with the battery that has the broken cell? Assuming there's nothing I can do what do I do with the other good battery? Can I pair it with a brand new battery even though it has 28 cycles?