About this 3D model

A 3D printable HP-41 battery replacement. You can stick in 4 sub AAA NiMH cells or go for the pro version, which powers a HP-41 from either - 2 AAA NiMH cells or - 1 old Li-Ion mobile phone battery, USB chargeable http://www.askrprojects.net/hardware/hp41bat/index.html