Manufacture of secondary batteries

This sub-class includes the manufacture of secondary (rechargeable) batteries and/or electric accumulators including parts of accumulators such as separators, containers, covers, lead plates and/or grids.  Units in this sub-class include the manufacture of: - electric accumulators, including parts thereof such as separators, containers, covers - lead acid batteries - NiCad batteries - NiMH batteries - Li-ion batteries - Li-ion polymer batteries - wet cell batteries - vehicles and bicycles batteries - battery energy storage system