You use the battery to put it in the TV remote, or remote controlled car.
Hope this helps! For more info type in "How to Beat Shrink Ray Island" on answers.com.
May the Force be with you...
You get the battery from the remote controlled truck. The screw driver you need to get the battery out is in the kitchen.
Shrink Ray Island
shrink ray island
how
Mystery train island
get to the toy truck then unscrew the battery hole and get the battery after that put the battery in the remote then click the button on the remote to turn it on. From yours truly Rebecca
you go and press the telescope on cj's desk and then you will shrink. hope it works:)
shrink ray island
To get to the toilet
bad
It was revealed in late July, 2011 that the 21st Poptropica island would be Mystery Train Island.
you find it on the fridge