Chosen Solution
I bought the iphone 5 battery replacement pack. After new battery installation, I’m unable to turn on the iphone at all. I left it charged for 1/2 hour, but no luck. If I re-install the old battery, I can turn back the iphone without a problem.
It’s a faulty battery you bought then
Check you iPhone here - Check your serial number here to see if it qualifies for the Battery Replacement Program: https://ssl.apple.com/support/iphone5-ba…