Description: New battery pack with 3 x 600 ni-cd cells but with black 3D printed cover, but you can ask for a color other than black! It is important to use a 2 euro cent coin or similar, so that the risk of breaking the hooking tab is reducedNew battery pack with 3 ni-cd cells 600 ma, with cover printed in 3D black, but you can ask for a color other than black!Calculators that use these Battery Packs are: BP1 ( SR-50, SR-51) BP1A ( SR-50A, SR51A, SR52, SR56, TI-58, TI-58C, TI-59 )