Test method of a lead battery in order to charge it in optimal conditions

A first series of current pulses is applied to the battery so that the electrolyte is stirred and ready for a second series which are used for measurement. The current pulses are limited to a peak (IMAX) related to the battery capacity and the pulse slope is between 20-40 Amps/sec. Battery voltages are measured at initial and subsequent current zeros and also at points (u1,u2) on the pulse slope. Independent claims are made for: (1) a regulator; (2) a generator; (3) a method for measuring pulse slope.