The NiCad batteries that come with the Playable Battle Robot Kits last up to 15 minutes - but sometimes that isn't enough!
Grab a spare or two for your robot and don't be stuck waiting for a recharge.
Ensure you use the proper charger that came with your robot. Do not charge a 7.2V battery with a 4.8V charger, or vice versa.
These Ni-Cad batteries are 700mAh and will take around 2hrs to fully charge using the included 250mA USB battery charger. Plugs are "SM-2P".
Choose the configuration that matches your robot (otherwise it won't fit!):
4.8V battery in a 1x4 configuration: Nile Crocodile, Jackrabbit, Sawfish, Snapping Turtle, Stag Beetle, Hammerhead Shark, Jigsaw, Drill Head, Trident
4.8V battery in a 2x2 configuration: Rattlesnake, Rage Wheel, Colossus
7.2V battery in a 1x6 configuration: Mustang
7.2V battery in a 2x3 configuration: White Rhino, Tornado