SPEC:

Connector plug:Red JST connector, plug end cross-section size:5.55*3.0mm/0.218*0.13inch.
Plug red cable pin is positive, black cable pin is negative. make sure your device is same line, don't be reversed.
Battery dimensions:
L3.4*W1.97*H0.57 inch.
Weight:105gram/3.7oz.
Material: Ni-Cad /NICD .
7.2V 900mAh Nicd rechargeable JST battery suitable for new version TEMA1985 Remote Control Excavator Toys with Metal Shovel 15 Channel Full Functional RC Construction Vehicles
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Package include:
2 x 7.2V 900mAH Ni-Cd RC Battery with JST plug
2 x 7.2V USB charger cable with JST plug
1 x Blomiky clean wipe