I recently purchased a Rayovac battery at a BatteriesPlus store for my Dell Lattitude D 505 but get this message from Windows XP: Quick set"The model number for the primary battery cannot be determined. This will present any battery present from charging. Please insert a Dell battery for best results"I doubt Rayovac would manufacture this battery if it couldn't be used in this laptop. Everyone I've spoke to about this problem is an expert but no two aggree...help!1 person needs an answerI do too