What medical test would measure your personal amount of “electrical current”?
As an aside I deal with lots of dead watches as an amateur. IMO 90% of all watch issues are due to using batteries that have aged out. A lot of people don’t realize that watch batteries do not have infinite storage lifetimes. Manufacturers tend to buy lots of batteries at once and some sit around for quite some time. The batteries that get put in new watches may measure OK at installation, but if they are long in the tooth and on the back end of their lifetime bell curve they will not last nearly as long as a fresh battery. In some cases you may only get a few weeks or a month out a battery when buying the watch new.
Look at it this way, if a battery will last 3 years or so in storage - it sits around after being manufactured for some time before being shipped to the manufacturer, then it may be a year before the manufacturer uses it, then the watch will be shipped and may sit in inventory for months to years before being sold. By the time you get a watch the battery might be on it’s last legs. It’s not uncommon.