Can you explain further? I'm currently ( pun intended! ) at a loss - to understand!to prevent surges you should connect plus to plus and the negative from the donor battery to a earth point on your car.
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Can you explain further? I'm currently ( pun intended! ) at a loss - to understand!to prevent surges you should connect plus to plus and the negative from the donor battery to a earth point on your car.
hope this explains it better
Step by step
Before connecting any leads make sure the vehicles are the same voltage and that they're parked with their handbrakes on and ignition off. The vehicles must not touch as this can cause sparks or an explosion.
- Use the red jump lead to connect the positive terminal of the donor vehicle's good battery to the positive terminal of the flat battery.
- Then use the black lead to connect the negative terminal of the good battery to a suitable earthing point on the engine or chassis of the other vehicle. This earthing point must be away from the battery and fuel system.
- With both leads connected wait three minutes for the voltages to equalise before starting either engine.
- Start the engine of the donor car and allow it to run for a minute then, with it still running, start the engine of the other car and leave both running at a fast idle for ten minutes. Do not remove the jump leads while the engines are running as this can cause serious damage to the electronics on either car.
What's is the difference then, between fitting a fully charged battery where a fully discharged battery has been, and a 'jump start' other than 2 to 3V. The vehicles' system must be able to take the normal maximum regulated alternator output voltage?
But, that is 'the point I am getting at'! Where would/does this 'high' voltage come from?It's a bit like the difference between a nice steady electric feed to your house and a lightening strike.
I put those 'things' in the 'too good to be true' category. Am I wrong - anybody?the portable battery starters that are designed for that use
a momentary spike in alternator output i guess...But, that is 'the point I am getting at'! Where would/does this 'high' voltage come from?
This earthing point must be away from the battery
Surely, there is no potential difference!position and potential difference.
Not all, I'm trying to clarify which part is!this is all bollicks