Keep your momentum going in "Brain Test 4 Level 30: We need a cleaner energy for this robot." with our complete walkthrough.
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Question
We need a cleaner energy for this robot.
Hint 1
Find a way to make that battery cleaner.
Hint 2
Drag the battery at the sink and wash it.
Hint 3
Drag the washed battery back to the robot.
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Answer
Tap on the faucet to turn it on. Then, drag the dirty battery to the sink to wash it. Now, drag the clean battery to the robot.
Game Versions
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