So I ordered a key fob from ebay (this one) last week and got it cut and programmed relatively easily. However, 3 days later, the battery it came with died. No big deal I figured, it had probably been sitting there for years. I bought the replacement for it, and changed it that day. Then today, 2 days later, the new battery died again. Has anybody experienced this or have any idea why it may be happening? It's cold outside (30-40 degrees), and I've spent a few hours outside, but I don't feel like that should be enough to kill it. Does anybody else have any ideas?