Hi, I purchased a 16GB SD Card and a bigger battery off eBay a couple months ago. The other day when my Hero wouldnt boot HTC Sense properly, I formatted the cache and when I rebooted the phone everything on the card was deleted and now it says theres only 30mb on it and I cannot get it to format. I was reading that this is caused by large electrostatic shock being sent to the sdcard and I am wondering if that couldve been caused by the battery? Thanks!
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It's certainly possible but I've never heard of it caused by a phone battery. It's more likely that the card itself was failing, which caused the problems booting. Did it report the correct 16GB capacity prior to this? I hate to say it but eBay is rife with fake memory cards.