Much of Chile is included in the Chilean Winter Rainfall-Valdivian Forests biodiversity hotspot (CEPF). In addition to mainland areas this hotspot includes the island ecoregions of the Juan Fernandez FernÃ¡ndez Islands Temperate (EoE) eoe and The San-Felix FÃ©lix San Ambrosio Islands (EoE) . forests eoe
Cars have voltage regulators that maintain their battery's charge. A multimeter, which can be used to measure voltage. An automobile engine's alternator essentially serves as an electric generator. The power generated by the car's charging system is also used to run the car's electrical systems, such as its headlights.
That's why a simple voltage check of a multicell wet battery doesn't tell you much, unless one of the cells is bad, which a voltage check can turn up. What really matters, in terms of cranking power in a car, is the total current flow available, aka the amperage, which can only be checked under load. Here's a quick thought experiment that may help you to understand... if you stacked up 8 AAA batteries at 1 1/2 volts each, that would total 12 volts.