In today’s world, Electric Hybrid Vehicle(EHV) is a prevailing vehicle technology inthat the major part is electric battery.Leadacidbattery is the widely usable battery inthe EHV because of its cost and efficiency.The real disadvantage in lead-acid battery isthat it easily sulfates because of impropercharging or discharging. Hence, desulfationcircuit or charge controller is placed alongwith the rechargeable lead-acid battery forproper charging and subsequently sulfationgets reduced. Numerous research techniquesare proposed for this desulfation or chargecontrolling are inspected in this paper. Thedesulfation or charge controlling of lead-acidbatteries done based upon varioustechniques and our audit made according tovarious methods such as pulse widthmodulation (PWM), pressure feedback,resonant frequency, chemical reaction andartificial intelligent. Eventually, the directionfor the future research is talked about in viewof the survey investigation.