The capacity of the battery has quickly subsided in the capacity 2.0Ah he holds only very good and then let to fast. Now, after 10 months of occasional use in the reciprocating saw and recently in a circular saw it is highly slack. With freshly charged battery I can do about 2m sawing a board bearing a thickness of 4cm. In the manual is, the first switching off the appliance to you charge the battery to avoid battery damage. Who exchanged the first off the saw at full load the battery? How much battery sol to keep then ready?