Red Charger

From Redhax

The Red charger, to avoid it tipping over when you only have one Red Brick charging- lift up the charger pull out the bottom and rotate it to a perpendicular position. If you add a brick to the charger and the Red light goes on the charger instead of the green or yellow, your brick is not being charged. I usually turn off the charger, unplug it, take the bricks off, replace the bricks, plug the charger into the wall, then turn the charger back on. This may seem superstitious but has worked for me in the past.