Many model
craft are powered
by 12 V
rechargeable
batteries. Often,
it would be a
godsend if these
batteries could
be charged by a
lead-acid (12 V)
car battery. However,
that is not possible,
since the car
battery voltage is just
sufficient to charge an
eight-cell (9 V) battery.
One solution to this
problem is, therefore,
to raise the car battery
voltage and this is
what the booster presented
in this article
does. In conjunction
with the car battery, it
enables 12 series-connected
cells to be
charged at charging
currents of up to
4 amperes.
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