Automatic Lead Acid Battery Charger Circuit

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Introduction

The importance of rechargeable batteries is undeniable in this modern era, and lead-acid batteries are one of the most commonly used types. However, the process of charging them can be a bit tricky, especially if one wants to ensure the longevity of the battery. But fret not, for we have the solution – an automatic lead acid battery charger circuit. This circuit charges all lead-acid batteries efficiently while ensuring the battery is never overcharged.

This cutting-edge circuit is designed to charge all types of lead-acid batteries quickly and efficiently while ensuring that the battery is never overcharged. With these circuits, you can say goodbye to the hassle of manually monitoring your battery’s charge level and instead let the circuit do the work for you. Let’s delve deeper into how this circuit works!

Hardware Required

S noComponentsValueQty
1IC7411
2TransistorT1 = TUN
T2 = BD138, BD140
T3 = TIP2955
1
2
1
3ResistorR1 = 12k
R2 = 10k
R3 = 82k
R4 =1M
R5, R6 = 8k2
R7 = 1000
R8 = 3k9
R9 = 4k7
1
1
1
1
2
1
1
1
4V. ResistorP1 = 100k preset
P2 = 220k…250k preset
P3 = 10k preset
1
1
1
5Polar CapacitorC1a = C1b = 4700u /40 V1
6TransformerTr = 16V, 8A 1
7Diode BridgeB80C100001
8Zener
Diode
D1 = 6V8, 400mW 
D2 = DUS
D3 = 5V6, 400mW 
1
1
1
9Fuse0.5 A slo-blo1

Circuit Diagram

Circuit Explanation

We must limit the charge cycle to ensure the battery’s longevity. The figure below shows the ideal charge current feature for a normal 12 V lead-acid battery that has been completely discharged. The high-quality lead-acid battery charger circuits are designed to cut off the charging supply when the battery is fully charged, preventing it from being overcharged.

Final Thoughts

In conclusion, automatic lead-acid battery charger circuits are the perfect solution for efficient and hassle-free charging of all lead-acid batteries. These circuits not only make the charging process easy but also ensure the longevity of the battery. We hope you found this article informative and helpful. If you have any queries or comments, please feel free to let us know.