charge up
Verb

charge up

  1. (transitive) 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. (idiomatic) To motivate, to instill someone with determination.
    The coach had to charge up his players with a powerful speech before the final.
  3. (LGBT, slang, transitive) To deliberately infect (a person) with HIV as part of bug-chasing.



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