9.0V, 700mAh, Ni-MH Battery fits Abbott, An-500, I-stat 1, 6.3WhBattery Fits Models: An 500, I stat 1, I stat 300 g Battery Part Numbers: 06f23 55 The products we supply will work for the device that it is provided for and is built to last as long as the battery that came installed originally. If you are worried about the quality or the performance of the products from Cameronsino, take a look at the reviews from our customers. Sound quality is assured as the products are manufactured to a very high standard