Battery runs out when switched device within a short time

I have the same problem with the device, as already one of the other reviewers: if you charge the battery fresh, the device has plenty of power and the expected "Bosch quality". But if you wegpackt the device and the battery can in it (comes with storage in the included suitcase otherwise) then the few days later is completely empty so that the cordless screwdriver is no longer a peep. This is of course especially why so annoying because I usually like to use spontaneously for several minutes / screw my cordless screwdriver, not ten hours in advance out hole to charge the battery ever again. Since a screwdriver is practical: He's always ready for use immediately, even if it is allowed to lie for a few days ...