As I say these batteries do the job knowing that my previous battery had passed away (she had totally swollen). The charge take a little time but hard for much longer than previous. However after a few months of use (~ 6 months) I distinguish reboot of the phone and looks like it can not know the battery charge at each startup. Can be a problem with the compatibility of such batteries, may also be a problem with the phone (HTC Sensation).
These batteries have all of me even brought satifaction.
