These are AA rechargeable Batteries. The batteries are NiMH, which do not have memory issues when charging. They are also 2600mAHr, which is much more powerful than most rechargeable batteries you can get in stores.
The picture of the battery may not be represenative of what we have in stock at any given time. We use different suppliers, etc so the batteries may have different covers, but they are all high quality AA NiMH batteries.
This battery holder features two 6", 26-gauge leads that have 5 mm of insulation stripped off of the ends.
Use these roll pins to fix sprockets to a shaft and keep them locked in place.
The HD2 tracked platform is a large, heavy duty tracked robot with the power to pull a truck and climb stairs. A wealth of internal space allows for batteries, controls and an optional computer.