Scroll down to the second
Scroll down to the second image which shows a battery connected to a laptop if you prefer an image of a battery repair professional. Our story includes examples of professional and also non-pro owners repairing the batteries. I worked for Honeywell's Vulcain instrumentation division as well as Thermo-Fisher Scientific for a decade. The funny thing about those cheap meters is that they produce the same readings as the pricey ones (in my experience). But feel free to pay more to read 7 volts if you like.