charge up

verb3

1. •
   To recharge, to give electrical power to something.

   • You should charge up your phone before the camping trip, as there won't be any power supplies.
2. •
   To motivate, to instill someone with determination.

   • The coach had to charge up his players with a powerful speech before the final.
3. •
   (slang) To deliberately infect (a person) with HIV as part of bug-chasing.

   • The subcultural vernacular “I'll charge you up" evokes the act of charging a battery or readying a mechanism for action; […] — 2009