Description: New battery pack with black 3D printed cover, but you can ask for a color other than black!
There are two types of batteries, the 600 or 800 mA NI-CD and the 1800 mA NI-MH.
It is important to use a 2 cent coin or similar, in order to reduce the risk of breaking the hook tab!
Calculators that use these Battery Packs are:
BP1 ( SR-50, SR-51)
BP1A ( SR-50A, SR51A, SR52, SR56, TI-58, TI-58C, TI-59 )