supercharge

Short definition from Wiktionary

Verb

1. 1
   To increase the power of an internal combustion engine (either Otto or Diesel cycle) by compressing the inlet air with power extracted from the crankshaft.
2. 2
   To make faster or more powerful.
3. 3
   To recharge a battery cell/pack at an extremely rapid pace.

Noun

1. 1
   A charge borne upon an ordinary or other charge.
2. 2
   An instance of supercharging.