Circuit diagram

Lead Acid Battery Charger circuit is highly recommended to recharge battery. And recommended that maximum voltage 24V 7A battery, so you can recharge a battery simultaneously. Battery Charger has been little use of several components such as diodes, electrolytic capacitors, transistors, resistors, and also for strengthening of the voltage and current stresses. And also do not forget to lowering electric voltage 220V to 20V-35V 5-10 Ampere suitable for Lead Acid Battery Charger circuit.

for Figure Schematic circuit Lead Acid Battery Charger, you can see below :

R1               = 1Ω 2w

R2               = 100Ω

R3               = 220Ω
R4               = 10KΩ Trim

C1 - C2       = 1000µF 50V

C3               = 470µF 50V

Transformer I mentioned above can use the 5A - 10A with a secondary voltage of about 20Volt-35Volt AC. My advice to IC please be cooler, because when the circuit and well even IC LM317 works it causes IC hot. Also to assemble the components using PCB (Printed works Circuit Board) qualified with a good track, as well as the components that will be used not forget to check back whether good or not, so it will also produce good results.

Wiring a second LM317 , U2 , in parallel with U1 is a quick and clean way to increase the current limiting threshold to 3A without sacrifing short-circuit protection.When more than 3A is required , the regulator module can be used to drive the base of one or more pass-transisotrs.