Has contact problems at the battery

When the laser pointer is time, then it's really super bright. Whether this is still within the permissible power range was once an open question. But not just because I was concerned to use the products in crowded meeting rooms, I let him disappear into a drawer. Above all I can do not need a laser pointer for presentations, which lets me down. This has the same get several times through this article. Apparently this is due to contact problems on the battery. Many other laser pointer (by colleagues) know this problem.

I have now bought a laser pointer with a fixed built-in battery which is charged via microUSB. That was not cheap, but since I never had more problems with dropouts during a presentation.