Robocopter is an indoor R/C helicopter with a different approach. Here you’re controlling a spaceman with a helicopter jet pack strapped to his back.
Here’s a video demonstration of the radio controlled toy:
The Robocopter’s charger has a unique peak detection circuitry that ensures an accurate charge every time and protects your battery from the dangers of overcharging. During the cycle it continuously monitors the battery’s charge curve and automatically stops charging when the peak/full charge is detected. Even though the box suggest a flight time of 5 minutes we had our in the air for 10!
The Robocopter requires 4 x AA batteries and costs £38 (about $79 USD). (Update: Link removed because the site is gone.)