However, the rechargeable battery saves you the cost of buying alkaline batteries and still provides the MP3 player with power enough for several hours of sustained use.
(the rechargeable battery; saves; you; the cost of buying alkaline batteries) (the rechargeable battery; provides enough; T:for several hours of sustained use; T:still)
the rechargeable battery the rechargeable battery
saves provides enough
you the cost of buying alkaline batteries
T:for several hours of sustained use T:still