Abstract: A charge-discharge current stabilizer for storage batteries includes a rectifier having a control element and connected in series with a switch and storage batteries in a charge-discharge circuit. The stabilizer also includes a system to control the rectifier, having a current sensor in the form of an electromagnet with a movable armature. A transducer converting electric signals to pneumatic signals is mechanically coupled with the armature of the current sensor. A pneumatic drive is pneumatically coupled with, and controlled by, the transducer. The control element of the rectifier has a slide operatively associated with an operating member of the pneumatic drive.