An engineer (read: big kid) has built an impressive go-kart that uses 6 Optima D34 (12V 55AH) batteries that allows the kart to reach speeds of up to 60 mph (100 kph). The kart is supposedly the fastest electric go-kart in the world, and therefore is a record-breaker. The batteries drive a S-33 motor and an Alltrax AXE-7234 controller, although the battery life is not mentioned.
What's interesting (and dangerous?) is that the batteries are mounted on the edges of the kart. These are automotive-grade batteries, weighing an incredible 42.9lbs (20kg) each! I bet that 6th battery is used just to carry the weight of the other 5 batteries! However, if he uses some large solar panels to charge the batteries, then it's a completely eco-friendly gokart! The rest of the kart is made from cheap car parts.
If you watch the video, he clocks the speed using a sat nav. Creative speed measurement!
Source: Eco-Friend
Dan is a well-experienced author who is interested in exploring new things related to eco-friendly gadgets and technologies. He never lets any latest technology go off his sight. Being passionate about contributing to the clean environment, he writes articles on the latest renewable gadgets and other energy-saving technologies.