The SMILE Plug includes a 5V Lithium-Ion polymer battery for back-up power, making it ideal for learning environments where electrical power can be inconsistent.

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It can also be connected to an external 5-volt Lithium-ion polymer battery for backup power, enabling use in areas where electricity can be inconsistent.

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The high-voltage battery consists of 12 modules each comprising 72 lithium-ion polymer cells.

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