Battery
Some vehicles are equipped with maintenance-free batteries.
Starter
Some vehicles are equipped with starters with planetary gearboxes.
Precautionary measures
It is prohibited to reverse the polarity of the power supply of various devices and electrical equipment in order to avoid failure of semiconductor devices.
Do not disconnect or connect the battery, measuring instruments or any wires while the engine is running.
(Read more on the website NISSANBOOK.ru)
It is prohibited to check the generator's serviceability by short-circuiting the power terminal to ground.
It is prohibited to test circuits with a mechanically driven ohmmeter (megohmmeter).
When working with electrical equipment or before welding, disconnect the battery from the ground.
Before disconnecting the battery, make sure you know the code to turn on the radio, the functionality of which will be impaired.