Bionic Bat was a Kremer prize winner using stored energy.

bat1

Bionic Bat

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bat5

0

1

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3

bat6

bat7

bat8

bat9

4

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7

bat11

bat12

bat15

bat16

8

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11

bat17

bat18

bat19

bat20

12

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bat22

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bat25

Bionic Bat

16

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bat24

bat27

bat1c

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Bionic Bat