12V all Size Battery Charging Auto Cut Off Circuit

 

12V Battery Charging Auto Cut Off, 250Ah, 200Ah, 150Ah, 100Ah, 40Ah, 7Ah Battery Charging AutoCut

To plan a 12V battery charging auto cut-off circuit utilizing a LM358 and a 12V 30A Relay, you can follow these steps:

Components Needed:

• 1. LM358 functional enhancer (Operation Amp)
• 2. Resistors 1k, 2k x 2 1/4w -for voltage divider and feedback, R1, R2, R3,
• 3. Diodes 4007 for protection
• 3. Capacitors 470 nf for stability
• 4. Relay 12V 30A
• 5. Zener diode 6.6v/.5w for overvoltage protection
• 6. Transistor BC547 NPN for driving the relay ( You can Use any NPN Transistor )
• 7. LED 5mm for indicating charging full and low

Relay Driver:

Interface the result of the LM358 to the basis of a semiconductor (like a NPN semiconductor) to drive the transfer. Guarantee that the semiconductor can deal with the ongoing expected by the transfer loop.

How it Works:

Potentiometer permits you to set the ideal cut-off voltage for the battery. At the point when the battery voltage surpasses the voltage (not entirely settled by the potentiometer), the result Changing the of the LM358 goes low, enacting the transfer. 

The Cut-off, when initiated, detaches the charging voltage from the battery, subsequently removing the charging system. The diode across the transfer curl forestalls voltage spikes when the Cut-off is switched off.

Remember:

Make sure to pick correct resistor values and parts in view of the exacting supplies of your battery and charging frame. Moreover, guarantee correct power scattering for the LM358 and the cut-off, mostly assuming the charging current is high.