A transformer consists of two inductors that transform electricity by - you guessed it - induction. You don't need a transformer because you can just get the e

A transformer consists of two inductors that transform electricity by - you guessed it - induction. You don't need a transformer because you can just get the electricity in the correct voltage by using the right inductor. I haven't made any calculations but I would expect the battery to be bigger and of greater weight than a sufficient inductor.