You recharge a cypher that was used in the past ten minutes, allowing it to be used again. You must touch the cypher, spend 1 XP, and succeed at an understanding numenera roll (difficulty equal to the level of the cypher) to recharge it. Otherwise, the cypher remains spent and useless. Some cyphers (particularly pills and injections) cannot be recharged in this way. In addition to the normal options for using Effort, you can choose to use Effort to recharge a cypher that was used more than ten minutes ago; each level of Effort used in this way extends the time period by ten minutes.