The present invention concerns a method for controlling the charge of an accumulator (4), as a function of the time during which said accumulator (4) has been on a charger (2), said accumulator (4) being intended to power an horological function and one or more auxiliary functions (14), this method being characterized in that it includes the steps of: incrementing a step counting signal during the charge time during which the accumulator (4) is on the charger (2); causing the accumulator (4) charge to stop when the counting signal has reached a previously defined maximum value corresponding to the nominal charge of said accumulator (4); and decrementing the step counting signal during the discharge time during which the accumulator (4) is not on the charger (2), the counting signal being decremented by a first step when only the horological function is being used, and by a second step which differs from the first and which depends on the auxiliary function or functions (14) used.