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TI LiPo 9V battery pack for Vintage TI calculators Gallery

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TI LiPo 9V battery pack for Vintage TI calculators Gallery

created by Nico Verduin • 01/14/2024 at 12:51

An extension to the TI59 Lipo project for old TI calculators requiring a boost to 9V from a lipo 3.7V.

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completed project TI battery pack
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