The Soshine 2 x AA to D-size cell battery converter case is used to convert the AA to D-size cell battery. Just stick 2 x AA battery in the converter and it's the same as a D-size cell battery. The battery converter case is perfect for electronics and emergency situations. The case is a good gadget to keep close at hand、 at home、 at the office、 etc.<br /><br /><br /><br /><br /><br /> The Soshine 2 x AA to D-size cell battery converter case is used to convert the AA to D-size cell battery. Just stick 2 x AA battery in the converter and it's the same as a D-size cell battery. The battery converter case is perfect for electronics and emergency situations. The case is a good gadget to keep close at hand、 at home、 at the office、 etc.<br /><br /><br /><br /><br />                                                                                                                                Dimensions: 2.28 in x 1.26 in x 1.26 in<br />Weight: 0.46 oz