Answer:
the anwser is As a DJ, Kelvin discovered some
problems with using batteries for electricity
They were expensive
and only worked for a
short time. Kelvin decided to figure out
how to make his own
batteries.
He made many unsuccessful
attempts, but he kept trying until he
achieved his goal.
Explanation:
1.electricity 2.expesive 3.how to make his own 4.unsuccessful
