“Stated fans are “battery powered” - type/quantity required and estimated hours of battery life? Is the lift platform spring loaded and how does it stay in position selected?”

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• There are buttons on each joint press in an set to desired angle then move to next join. Then do the same on other side.

  Answered by BigPapaJef 4 years ago

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• It does not take batteries but runs off the laptop battery via USB. A portable power pack could be used in place of the computer. The legs rotate and lock in many different positions. They are not spring loaded but lock solid into and almost indefinite amount of different angles and height levels. It can be used on a desktop or serves as a stand alone tray that reaches the floor up to working level.

  Answered by Chad 4 years ago

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• Not battery powered

  Answered by FW100 4 years ago

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• Fans plug into your computer USB port, the legs lock in place at different angles

  Answered by Kenb 6 years ago

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