Is thw rapid charger sold here safe to use on my htc one m8 phone?

[AC Question]

Do I have to use the HTC charger to charge or can it be another name?

 

[AlphaTango414]

You normally get best performance out of the manufacturers charger. Especially the power block. You can use any other 2.1A charger. However, stay away from cheap China made stuff, junk that is a fire hazard.