To connect a charged and a discharged battery to each other, use special wires to start the engine from an external battery, this will protect electronic parts from dangerous voltage peaks.
1. The vehicle with the battery must be parked next to the vehicle with the dead battery so that the batteries can be wired.
2. Turn off all consumers.
3. Attach the wire to the positive pole of the battery, first the discharged battery is connected, then the charged battery.
4. First connect the second wire to the negative pole of an external battery, then to the mass of the car with a discharged battery.
5. Then start the car engine with the battery supply, the engine must run at high speed so that the generator gives full voltage.
6. Start your car engine. If the engine does not start immediately, pause after each start attempt to allow the starter to cool. The car's engine with the charged battery should still be running and the dead battery will be recharged.
7. When disconnecting the wires, first disconnect the wire from the ground (negative pole) its battery, then - from the negative pole of the supply battery. After that, disconnect the wire from the positive poles: first from the pole of the foreign battery, then from the pole of the discharged battery.
8. After starting, the engine must be run at high speed to allow the alternator to charge the battery.
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