Small household batteries (AA, AAA, C, D) are also called “dry” batteries because the electrolyte is a paste of powdered chemicals. Alkaline batteries use an alkaline electrolyte. A battery’s voltage depends on the metals that are used in its electrodes and the number of cells. Household batteries produce 1.5 or 9 volts of direct current (DC) electricity, depending on the model.
Repair centres offer a solution in the top layers of the hierarchy. By repairing batteries, they are able to extend the lifespan of batteries considerably. They have a team of experienced high-voltage experts, certified to work on lithium-ion batteries.

The circuits of some smart batteries must be kept “alive” during the replacement of the cells. Disconnecting the voltage for only a fraction of a second can erase vital data in the memory. An analogy is open-heart surgery where doctors must keep all organs of the patient alive. The lost data could contain the resistor value of the digitized shunt that is responsible for the coulomb counter and other data.
My desktop computer is getting very slow, and I have thought of replacing it with a laptop or notebook or whatever smalled units are available. reading this article about batteries, I wondered if I have to have a battery-operated unit. If I get a smaller system, I still plan on using it maily on my desk at home.