QUARTZ is a reliable and multifunctional device. It can hardly be called modern, but you have to work with what you have. One of the problems that you have to put up with is the need to carry an interchangeable set of AA finger batteries. The level of charge that the device shows, to put it mildly, is not reliable and the vibration analyzer can turn off at any time. Batteries had to be recharged once every 1-2 days. This article will talk about a simple way to solve this problem.