Since I am often and much time traveling in the normal battery life of my Archos 605 is hardly enough for more than 3/4 hours and is not always an outlet nearby. The Battery Pack extends the Run time noticeably and AA batteries eventually you can take as many as you just want to, so you can extend the duration without any outlet. Recommended. Since the product works, plain and simple is used, the price and the delivery period fit - 5 star -.