|Home > Circuits > Power Supply > Automatic 12V Lead Acid Battery Charger|
|This charger will charge any 12V lead acid battery including flooded, gel and AGM. It is fully automatic and will charge at a rate up to about 4A until the battery voltage reaches a preset point at which it will switch to a very low current float charge. If the battery voltage drops again the charger will begin charging until the voltage once again reaches the cut off point. In this way it can be left connected to a battery indefinitely to maintain full charge without causing damage. An LED indicates when the battery is fully charged.|
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|hi..... how to add 2 or 3 batterys to this same circuit........???|
|i can't found the TRIAC BT136 but can i use TRIAC BT139 instead of TRIAC BT136? and can i use BC548 or BC558 instead of BRX49 SCR? and can i use IN4004 diode instead of P600 Diode? please help me. i need to complete my project urgent.|
|i assembled a 12v charger only using 1no center tap 12-0-12 transformer 4amp and 8nos of power diode 4nos for each side and charged 120AH BATT WITHIN 8HOURS. CHARGING CURRENT FOUND 10AMP. NO MORE COMPONENT USED. WHAT WILL BE THE DEMERITS ON IT .|
|pls how can this circuit be reconfigured to charge two 12V/15Ah sealed lead -acid batteries using a 27 or 28 volts AC/DC converter|
|i made that cct n its working good, used full wave rectification coz D1 introduce high resistance, n BT151 for brx49,|
|Dear sir, We try to make the circuit but at the output we are getting voltage between 6.3 v to 7.38v only. Connected LED D4 is not glowing. We are connected 3v red LED. Please guide us how to get complete 12 v for charging the battery. We also connected 12v chargable battery at output but we are not getting 12v at the output.|
|hi been wondering whether Vac or Vdc is used to power the device? i tried making it but it failed to power up. please send me an email. thanks!|
|Dr. thanks for the good work, Please how long will it take to charge 12V 200AH battery and how will i change the design to charge the battery within 5hrs Please send me the reply if possible with the circuit diagram to my email|
|Hello, I'm going to build this nice gel charger and i womder what values and components do i need to change for a 24V feed ?|
|third class circuit dont try to assemble otherwise you will loos your mony and time|
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