【AA Battery Type】:4 x aa battery, 4 x 1.5V (6V) AA battery and ouput voltage is 6 volt.
【4 AA Battery Holder Case Size】:6 x 3 x 3cm/2.36" x1.18" x1.18"(L*W*H); weight: 10.3g/each.
【Size of 9 volt battery connector with wires( Each )】:2.4 x 1.2 x 0.7cm/0.94" x 0.47" x 0.28" with wire length about 15 cm/ 5.9 inches, Plenty of wire lead length that can be trimmed to fit.
【Well-made Material】: Made of thicken plastic shell, Color:Black.
【Good Battery Pack Replacements】: Used these to replace a broken battery holder for an electric safe.Widely used in electronic circuit experiment, Arduino projects, led devices, household appliances etc.