12v Solar Battery Charger Circuit Diagram

Simple 12v battery charger with battery indicator.

12v solar battery charger circuit diagram. 12v battery charger with auto cut off circuit diagram. A 12v battery is normally recharged at 14 2 v or 2 40v per cell. You are able to ideally take advantage of this circuit for applications such as inverters portable chargers etc. Voltage output is adjustable.

3 solar charger and driver circuit for 10w 20w 30w 50w white high power smd led. One 555 timer ic is used for detecting the voltage level and relay is used to disconnect the ac input. You can use this circuit to charge 12v sla battery or 12v gel cell battery and so on. The circuit is using an lm317t voltage regulator ic.

18 to 20v output voltage range. As the battery gets charged the terminal voltage begins increasing gradually until it reaches the set 14 2 v. The charging current passes to lm317 voltage regulator through the diode d1. The bc548 transistor is working as a switch which will disconnect the ground of the lm317t from the solar cell when the battery become full charge.

7808 voltage regulator is used for constant supply to the operation of the circuit to cut at a required fixed voltage. Circuit diagram of solar panel battery charger step 6 from below you can see the soldered connections how they run along the copper tracks. The smd leds are fully safeguarded thermally and from over current using an inexpensive lm 338. Once we attach the charger with the battery voltage drops from the actual supply 14 2 v level to the discharged level of the battery.

Solar charge controller specifications. 7 to 14v adjustable not recommended for 6v applications max power dissipation. Batteries with different potentials like 6v and 9v can also be charged by choosing appropriate components. This circuit is designed to provide charging current upto 3 amps and this circuit don t have reverse polarity protection or over.

Solar battery charger circuit principle. Related post lead acid battery charger using lm317 3 battery charger using scr. Solar battery charger operated on the principle that the charge control circuit will produce the constant voltage. The 3rd idea teaches us how to build a simple solar led with battery charger circuit for illuminating high power led smd lights in the order of 10 watt to 50 watt.

This is a simple 12v battery charger circuit with indicator circuit is a smart charger circuit. An automatic battery charger circuit using scr is implemented in this project. It can be used to charge 12v batteries. 50w 4a 12v nominal open circuit voltage.

The output voltage and current are regulated by adjusting the adjust pin of lm317 voltage regulator. 16w includes power dissipation of d3. Is a very effecient automatic solar battery charger circuit which can be used to charge 12v sla batteries from solar cells. Simple 12 volt battery charger circuit diagram designed by using few easily available components and this circuit is suitable for different types of batteries needs 12 volt.