Question : IS it correct to jump
start a vehicle by connecting the positive and negative terminals of the weak
battery to the positive and negative terminals of the booster battery
In one incident, I saw that the booster battery was damaged. What is the
What are the things to look for in
purchasing a jumper cable for cars?
Answer : The connection is always positive to positive and negative to
negative. The recommended method is firstly to connect the red jumper cable from the positive of the charged battery to the positive
of the dead battery. Then connect the
black jumper cable to the negative of the
charged battery and the other end to any
metal part of the vehicle such as a head
As far as possible, do not connect the black cable to the negative of the
dead battery because sometimes while connecting there will be sparks and the sparks
may cause the battery to explode due to
the hydrogen gases coming out of the
When buying a booster cable, make
sure that the cable is heavy and has many
strands of copper wire as the more the
strands, the higher current it can carry.
For starting, the current draw will be
about 400 amperes and if the cable is not
strong enough, it will melt.
Also make sure that the clamps are
made from solid metal and not just sheet
metal bent into the shape of a clamp.
These sheet metal clamps cannot carry a
heavy load and will quickly get too hot
even to hold.
Of course cost is the factor and the
cheaper products can still do the job but
not as well.