![]() Lead Acid Battery is a rechargeable battery developed in 1859 by Gaston Plante. Similarly, the 7815 Voltage regulator produces a constant regulated voltage of 15V. You might have used 78 which produce a regulated voltage of 5V and 12V respectively. The 7815 is a part of the 78XX series of linear voltage regulators. The circuit diagram of the Lead Acid Battery Charger is given below.Ĭomponents of Lead Acid Battery Charger Circuit Related Post – 12v Portable Battery Charger Circuit using LM317 Circuit Diagram There is also a trickle charge mode circuitry which will help to reduce the current when the battery is fully charged. The regulated DC out voltage is given to battery. The voltage regulator used here is 7815, which is a 15V regulator. Car battery is also a lead acid battery.Īs seen in the above block diagram, a DC voltage is given to the DC voltage regulator. Think if you have only DC voltage and charge the lead acid battery, we can do it by giving that DC voltage to a DC-DC voltage regulator and some extra circuitry before giving to the lead acid battery. Then we can give the regulated voltage to the battery to charge it. To charge a battery from AC we need a step down transformer, a rectifier, filtering circuit, regulator to maintain the constant voltage. Take all the necessary precautions as you might be handling Mains Voltage and high potential DC. Warning: Before proceeding further, I want you to know that this circuit is tested in a specific test conditions and we do not guarantee that it will be 100% successful. The main concern with any battery is it discharges over time and must be recharged so that it can provide the necessary voltage and current.ĭifferent batteries have different strategies of charging and in this project, I will show you how to recharge a lead acid battery using a simple Lead Acid Battery Charger Circuit. ![]() Due to their low cost (for the capacity) compared to newer battery technologies and the ability to provide high surge currents (an important factor in automobiles), Lead Acid Batteries are still the preferred choice of batteries in almost all vehicles. Lead Acid Batteries are one of the oldest rechargeable batteries available today. ![]() Components of Lead Acid Battery Charger Circuit. ![]()
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