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In this video, I will show you how easy it can be to design your own Automatic 12V Lead Acid Battery Charger Circuit Board and have them manufactured professionally at https://jlcpcb.com JLCPCB is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production.
You can use this circuit to charge12V 1A ~ 12V 7A Battery.
I designed this circuit to charge your battery @ 70% to 75% only due to some safety reasons. If you want to make it for 100% charging, then remove the LM7815 and connect directly 18VDC supply and set tripping point at 15.8 ~ 16V. and always use 5 to 6 times lower charging current from the maximum value of battery current. i.e 1.2A for a 7AH battery.
*This circuit Has not any current limiting feature.(except 1R5W Resistor)
**This circuit is not 100% Perfect, but it is still very useful for hobby/DIY projects.
***Make it at your own risk.
In this video i will show you :- 12V 4 Amp Battery Charger With Auto cut off………….. [Over charge protection circuit ]
Simple 12 Volt Automatic Battery Charger Circuit.. This circuit is very simple and you can easily make it at your home……..In this circuit we will use a relay to cut off charging when the battery will be full.
Required components :-
5K Preset (POT)
Resistor 1K Ohm × 4
Resistor 68K Ohm × 1
Resistor 220 Ohm × 1
Diode 4007 × 1
Zener Diode 3.9V × 1
Best 12v Battery Charger, portable car battery charger, jump starter, auto battery charger, 12v battery charger, 12v car battery charger, portable car charger, automatic battery charger, best car charger, car battery trickle charger, smart car battery charger, car battery tester,
in this video you how to make 12 volts below 35Ah lead acid battery charger using the step-down transformer 1 amp 12v -0- 12v
1) 1N4007 diode -4
2) 1000uF/25v capacitor
4) LM7815 regulator
5) 12v-0-12v,1A transformer
6) 1k ohm resistor
this is very quick charger in 4 to 5 hours
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