How many times can the sandisk clip sport battery can be recharged?
Many, many times. Like years worth.
The general word I see about this type of battery technology is, around 500 full charges (that is, from a very depleted state), until one sees a real effect on the charge capacity (meaning, it still will charge, even then, but not at the original performance level). And so partial charges do not constitute a full charging as against the 500 or so, but only a partial count.