- make sure that both batteries have a voltage of 12 V and approximately the same capacity;
- using wires of a sufficiently large cross section with clamps of the type «crocodile» at the ends, connect the terminal «+» discharged battery with one wire to the positive of the external battery, and the terminal «—» external battery with another wire with the mass of the engine being started;
- start the car engine «donor»;
- after that, start the car engine with a discharged battery;
- after starting the engine, disconnect the wires in the reverse order of connection.
External battery connection diagram (B) to the car battery (A) in the case of a strong discharge of the latter. The numbers 1-2-3-4 show the order of connecting the clips to the terminals.
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