Your iHome may be an older model with an the wrong charge type. Different iPhone / iPod generations use different charge voltage with iPhone requiring a higher voltage than your iHome gives. My suggestion would be to get an adapter that should fix the problem.
Answers & Comments
Your iHome may be an older model with an the wrong charge type. Different iPhone / iPod generations use different charge voltage with iPhone requiring a higher voltage than your iHome gives. My suggestion would be to get an adapter that should fix the problem.