Where do you clamp the negative jump lead on your V70 ?

[JJD1]

My old D5 had a great connector for the negative .The 2.4 does not seem to have this . Jumped a friends car today and it took 3 goes to find a good ground

[marcb]

The recommended negative point is the bracket by the power steering pump.

[JJD1]

Cheers !

[JoeNinety]

On the battery ?

[JJD1]

Originally Posted by JoeNinety

On the battery ?

I would imagine most jump from the engine bay points ? And you should not use the battery negative .

[stuart bowes]

blimey, since when? I've jump started off various different batteries many many times over the years

in this car I wouldn't, but that's just because it's a pain having to lift up the boot floor, unbolt that little metal frame and take the cover off

[Nick6262]

Originally Posted by stuart bowes

blimey, since when? I've jump started off various different batteries many many times over the years

in this car I wouldn't, but that's just because it's a pain having to lift up the boot floor, unbolt that little metal frame and take the cover off

There's meant to be a little frame? My battery is just kinda sat there in the boot. Never occurred to me there was meant to be something holding it in place.

[JoeNinety]

I usually have to get the jump cables out of the boot space (where the tyre and battery are) so I am in there already! I just have a clamp across my battery, access to the terminals is uninhibited.

@JJD1 - I have been jump starting cars of all types from Range Rovers (with all their dodgy electronics!!) to Minis for over 45 years and always straight from the battery terminals. Not sure where you got "not using the battery negative" from?

[JJD1]

From Varta

Jump start a car – the step by step guide to follow!
Battery Basics
27. June 2018
A dead battery can often be revived with a jump start. You just need to know how. For the assistant as well as the driver of the broken down vehicle, it is therefore useful to know what to do in this case.

According to ADAC breakdown statistics, up to 40% of all breakdowns are caused by poorly maintained batteries. If the battery capacity falls below a critical level, it cannot supply the car’s electrical components with sufficient power. Often as a last resort jump starting with the aid of a jumper cable can get the vehicle started.

First of all: The right tools and aids
The good news for all concerned: To jump start a car with a discharged battery, in addition to an assisting vehicle with a working battery, only a jump start cable is required. Important: The diameter of the cable should be at least 16 mm. For cars with large engines, a jump start cable with a cross section of 25 mm is recommended. The vehicle which has suffered a breakdown must be supplied by a battery with the same voltage. Normally, the voltage of most vehicles is 12 Volts. Only a few vintage cars are operated with a voltage of 6 Volts. In all cases, please observe the information in the operating manuals of both vehicles.

Jump starting – step-by-step
Preparation
Both vehicles must be parked on level ground and secured. The assisting and the broken down vehicle must not touch, as otherwise there is a risk of a short circuit. In many new vehicles the battery is no longer located in the engine compartment, but the positive and negative terminals can usually be found quickly. If necessary, a look at the operating instructions can be helpful. The engines of both vehicles must be switched off.

Important: Many modern cars, in which the battery is not located under the bonnet have “jump start” connections in the engine compartment, which must be used. In this case the jump start cable must not be connected directly to the battery.



Connecting the jump start cable
The jump start cable must only be held by the insulated plastic handles.



Important: The red cable is always connected to the positive terminal and the black cable to the negative terminal. First the clamp of the red cable is connected to the positive terminal of the assisting vehicle. The other end of the red cable is connected to the positive terminal of the broken down vehicle. Then the black clamp is connected to the negative terminal of the assisting battery.

Important: Under no circumstances should the other end of the black cable be connected to the negative terminal, but rather to the body of the broken down vehicle. For this, a strong, unpainted metal component in the engine compartment of the vehicle, for example the engine block, is suitable. Connection directly to the negative terminal of the broken down vehicle is not recommended, as this can cause sparking, which can damage the battery. In the case of old lead-acid batteries, there may even be an escape of battery acid, which could endanger people in the vicinity. There is also a risk that hydrogen could ignite, so it is advisable to wear protective glasses.

Starting the vehicle and disconnecting the jumper cable
Important: First start the engine of the assisting vehicle and then the engine of the broken down vehicle. If starting is successful, an electrical consumer such as the headlights or the rear window heater should be switched on in the broken down vehicle. This avoids voltage surges when disconnecting the clamps from the terminals. Removal of the cable clamps is carried out in the reverse sequence. A long journey is recommended in order to quickly recharge the battery. An alternative is to connect the battery to a charger.

Also it was the way I was always taught .


more

https://www.firestonecompleteautocar...-battery-tips/



SO Thats why Volvo and many others when they hide the batteries provide jump terminals in the engine bay .YOu imagine a trunk full of stuff and you need to start the car or start another car ! I always use the Positive in the engine bay and a ground point .

[JJD1]

https://www.youtube.com/watch?v=hyLwfthYjKw