Do you or your old Mum keep forgetting to switch off the magnifying glas or the torch ?

Each time new batteries cost about 5 USD and they are also a burden on the environment.

Now there is an add-on which automatically switches off after 5 minutes.

This add-on is called SABA (SAve BAtteries) and it can easily be installed in common battery driven devices.

SABA now exists as a prototype, in several copies, suitable for tests and evaluation.

Now SABA can be used with the battery sizes C and D according to the picture below.