To recharge, to give electrical power to something.(verb)
To motivate, to instill someone with determination.(verb)
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Use "charge up" in a sentence
"A scramble, and Mary saw Lord Herries leading a second charge up Langside Hill."
"Let Munford's 2nd Virginia cavalry cross the swamp, charge up the hill, and secure the guns the Federals had abandoned."
"This proposal will spur greater production and availability of renewable fuels like cellulosic ethanol and biodiesel, and it will even create an incentive for the production of more flexible-fuel and plug-in hybrid vehicles that can use these clean fuels or charge up with renewable electricity."