Also, cheap chargers charge slowly.
I use
http://www.bhphotovideo.com/c/produc...t_12w_12w.html
I've had it for over a year now, it never got stuck or caused any problems. (but I don't use it daily)
And though it charges slower than the phone's dedicated wall charger, it's still pretty fast. Especially that I charge while using nav on the phone, which probably eats up much of incoming amperage which would go to the battery otherwise.