I selfishly purchased this, Insignia - Rechargeable Battery Pack for Xbox One, for my son as I was constantly running back and forth to the store for AA Batteries. 20 bucks later I have not been back to the store to buy AA batteries is almost 5 1/2 months. I figure this $20 purchase has save me about $200 in AA batteries alone with out factoring in the cost of gas to and from the store. Big win on all fronts. The only down fall is on Microsoft for using a micro USB charging port vs a USB-C charging port but again, that is on Microsoft rather than Insignia. Hope Microsoft steps their game up next time around. If you are into saving TIME and MONEY this is the product for you!