Recharge or recharge cycle was the process where a form of technology was allows to return to its original rate, setting, or capacity. In many cases, various emitter systemed need to be shut down and recharged in order to function correctly once again.
When Enterprise NX-01 was in orbit of the Akaali homeworld, the Malurian vessel was recharging weapons following their first attack on Enterprise. T'Pol ordered preparing to leave orbit. (ENT: "Civilization")
When Kira Nerys traveled aboard the Cardassian military freighter Groumall, she suggested that the slow charging rate of the ship's phaser bank could be sped up by routing power through an anodyne capacitor. (DS9: "Return to Grace")
When the USS Equinox was under attack, Captain Rudolph Ransom had Maxwell Burke take the shields offline to recharge the emitters in order to restore them to full power. The process, however, meant the crew of the Equinox would be sheild-less, and therefore vulnerable to attack for the forty-five second period it took for the charging cycle to complete. (VOY: "Equinox")