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12V Car Starter - £7 (was £20) @ Woolworths !
12V Car Starter  - £7 (was £20) @ Woolworths !

12V Car Starter - £7 (was £20) @ Woolworths !

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This 12V Car Starter acts as a brilliant jump lead replacement system. Simply connect via your lighter socket and away you go.

Features

Connects via cigarette lighter socket
Built-in circuit protection

12 Comments

these aren't very good, i bought one a couple of months ago for £7 and it didn't do the job so i gave it back

I like the concept, I get scared when using jump leads coz they keep sparking.

diabeticguy;1584933

I like the concept, I get scared when using jump leads coz they keep … I like the concept, I get scared when using jump leads coz they keep sparking.



That's because you're connecting both leads to the battery terminals which is wrong and dangerous to your alternator! The negative lead should be fixed to an earthing point - not to a battery terminal.

RedSkywalker;1585008

That's because you're connecting both leads to the battery terminals … That's because you're connecting both leads to the battery terminals which is wrong and dangerous to your alternator! The negative lead should be fixed to an earthing point - not to a battery terminal.



Top tip! I didn't know that, thanks. :thumbsup:

RedSkywalker;1585008

That's because you're connecting both leads to the battery terminals … That's because you're connecting both leads to the battery terminals which is wrong and dangerous to your alternator! The negative lead should be fixed to an earthing point - not to a battery terminal.



LOL, what a load of rubbish... :w00t::w00t:

The negative terminal of the battery is connected directly to the chasse on 99.9% of cars.

(Some odd old 80's cars had a positive earth on the car.)

All emergency agency's connect directly to the battery/

Try reading the instructions on any charging unit or any RAC / AA book on the subject - and why am I not surprised your still driving an "old 80's car" lol.

Chiptivo;1585588

LOL, what a load of rubbish... :w00t::w00t:The negative terminal of the … LOL, what a load of rubbish... :w00t::w00t:The negative terminal of the battery is connected directly to the chasse on 99.9% of cars. (Some odd old 80's cars had a positive earth on the car.)All emergency agency's connect directly to the battery/




Verbatim from Wikpedia:-

Operation of a lead-acid battery produces hydrogen gas which is flammable. Caution is in order to avoid a spark which may ignite the gas. The usual recommended sequence [4] is to first connect the positive terminals of the charged and dead batteries with the red booster cable, then connect the black cable to the negative post of the charged battery and to the frame of the vehicle with the dead battery, at a point away from the battery.

This method avoids creating a spark near the battery terminals. The boosting vehicle must not touch the boosted vehicle.

By connecting the positive terminals first, the risk of accidental short-circuits can be minimized. If the negative terminals were to be connected first and the operator accidentally touches the chassis with the positive cable, a massive and dangerous short-circuit would form, possibly welding the cable to the chassis. But with the positive cable connected first, accidentally touching the chassis with the negative cable is harmless.

But no doubt the rest of the world is wrong and you're right!

Sagor;1584895

these aren't very good, i bought one a couple of months ago for £7 and it … these aren't very good, i bought one a couple of months ago for £7 and it didn't do the job so i gave it back



was gonna get one of these (cause I also freak out abit when sparks are going everywhere) but now im not so sure..... :thinking:

It is nothing to do with the electrics, or damage to the alternator.

The car's frame is the same as the negative terminal of the battery, no fancy electronics between them, just a copper wire.

The reason's you, or wiki gave are related to possible hydrogen given off by the battery, batterys made in the last 10 years are sealed, so no risk of that.

It is now common practive to connect directly to the battery, I would love to see the face of a AA or RAC man if a punter questioned and refused to let them to connect directly to a battery whilst trying to restart their car.

RedSkywalker;1585759

Verbatim from Wikpedia:-But no doubt the rest of the world is wrong and … Verbatim from Wikpedia:-But no doubt the rest of the world is wrong and you're right!

If you guys have finished 'sparking' off at each other can you make a more constructive comment, like whether this item in question is any good.

The only reason they tell you to clamp an earth point is because the residual current flows round the natural inductive loop of the direct current charge circuit which excites the positive ions in the acidic gas thus the negative electromagnetic force may spark a chain reaction when connected to an external dc current resulting in the two atoms smashing together causing radioactive meltdown and the end of the earth as we know it ! .......:p

Now seriously be carefull when connecting jump leads as when batterys explode they can melt your face off ! better to connect to an earth point for this reason. not sure about this product cus the wires dont seem thick enough to take a large current..
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