The basic theory of 12v battery charger

The basic theory of a 12v battery charger is a tutorial addressed to the people in need how a how to make 12v battery charger at home

we have to know the process in order to make it ,after knowing the basic theory and the working process of a lead acid 12v battery we can build assemble or make a 12 volt battery charger with protection. The 12v battery is still in demand these days altho the lithium battery technology is fighting back, but till 18650 battery will win we still have to use lead-acid battery because there are more affordable at this point.As well as starting the engine, an SLI battery supplies the extra power necessary when the vehicle’s electrical requirements exceed the supply from the charging system. It is also a stabilizer, evening out potentially damaging voltage spikes.[2] While the engine is running, most of the power is provided by the alternator, which includes a voltage regulator to keep the output between 13.5 and 14.5 V.[3] Modern SLI batteries are lead-acid type, using six series-connected cells to provide a nominal 12 volt system (in most passenger vehicles and light trucks), or twelve cells for a 24 volt system in heavy trucks or earth-moving equipment, for example.
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12V DC Supply or Battery charger(using full bridge)

Hello friendz i will back with a new video in which i am going to make 12V DC supply from 220V AC supply
Generally we see 12V DC supply in our little or smart Home🏠🏡 appliance such as Mobile Charger,Laptop Adapter, or we can else say digital electronic Devices

So, How this adapter or charge convert 220V AC to 12V DC Supply Let see:
I am just making this DC Supply which also run these same appliances………..🔝⬆⬆🔺

I hope you like
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ক্যাপাচিটর দিয়ে ব্যাটারি চার্জার তৈরি করার নাইস আইডিয়া। Battery Charger using Capacitor_ ET DISCOVER

How to make 12 vote Battery charger using fan capacitor easy make at home

Hallo friends today I’m going to show you ফ্যান ক্যাপাচিটর দিয়ে ব্যাটারি চার্জার তৈরি করার নাইস আইডিয়া। How to Make 12v Battery Charger using Fan Capacitor

বাংলা ফাস্ট একটিভ এর এক বৎসর পুর্ন হলো সবাইকে আন্তরিক শুভেচ্ছা ও অভিন্দন ভালোবাসা রইল

Et discover, American Tech,Technical gurugi,creative channel, Indian all electronics, channel support, me Thanks all Indian technical channel,

যেকোনো ওয়াইফাই পাসওয়ার্ড পাবেন Et discover

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How to make 12v 6v battery Et discover

How to run DC motor using fan capacitor

How to make free energy motor

How to make mini inverter

Simple drill machine

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Best Car Battery Charger Review 2018 | Portable Car Battery Charger

Best Car Battery Charger Review 2018 | Portable Car Battery Charger

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The IC-7000 – 7 AMP 12-24V Intelligent Microprocessor Battery Charger is capable of testing, charging, maintaining, and even repairing all types of 12V and 24V lead-acid batteries, including WET (Flooded), GEL, MF (Maintenance-Free), EFB (Enhanced Flooded Battery), AGM (Absorbed Glass Mat), and 12V Lithium and AGM+ batteries. It has a built-in intelligent microprocessor which makes charging faster, easier, and safer to use. Safety features include spark proof, reverse polarity, short circuit, over current, overcharge and overheat protection. Keep it connected 24/7 without damaging the battery and keep your battery ready to use.

Smarter™ Battery Chargers offer expanded features not found on most chargers. Restorative functions like desulphation, destratification, and optimization allow you to regain 100% of your battery’s capacity. These chargers are so advanced, they have the capability to recover battery voltages that are too low for traditional chargers to detect.

The Smarter™ 7A 12V/24V Battery Charger charges batteries from 14-230Ah (12V) and 14-115Ah (24V) and safely maintains 6V and 12V lead-acid batteries of all sizes.

With a dedicated Repair Mode for deeply stratified or sulphated batteries, the Smarter™ 7A 6V/12V Battery Charger could save an otherwise “dead” battery.

The charger also has a 13.6V 5A Supply Mode which allows you to power 12VDC devices.


How to Make Automatic 12V Lead Acid Battery Charger Circuit Board

Get 10pcs PCB boards for $2 & Big Shipping discount on First order:
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 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.

List of Components:
R1,R3 = 1K
R4,R5 = 1.5K
R6 = 10K
R7 = 1.2K
R2 = 1R5W
PR1 = 50K
Q1 = D882
D1 = 1N4732A
D2,D3,D4 = 1N4007
Relay = 12V
U1 = LM7815
5MM LED = Red,Green,Blue,Yellow
Alligator Clips = 2
Jumper = 1

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.

Circuit Diagram:
PCB Gerber Files:


soldering kit:
Soldering Wire:
Soldering Paste:
Third Hand Tool:
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12V 4Amp Battery Charger With Auto Cut Off

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 :-
Transistor BC547
Transistor BD140
12V Relay
5K Preset (POT)
Resistor 1K Ohm × 4
Resistor 68K Ohm × 1
Resistor 220 Ohm × 1
Diode 4007 × 1
Zener Diode 3.9V × 1
Vero Board


Best 12v Battery Charger !! Portable Car Battery Charger

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How to Make 12V Battery Charger At Home

In This Video I Am Going To Show You How To Make 12 Volt Battery Charger at home.

Required Components

▪ 4700 uF 25V Capacitor (1)
▪ Red LED (1)
▪ 12V 2A Transformer (1)
▪ 1N5408 Diode (x4)
▪ 1 kΩ Resistor (1)
▪ 2 Pin Power Cable (1)
▪ Wire
▪ Plastic Bottle
▪ Soldering Iron
▪ Soldering Wire
▪ Cardboard
▪ Glue Gun
▪ 12 volt battery

Note:- Do not charge low amp batteries.

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Top 5 Best Dual Battery Charger

Top 5 Best Dual Battery Charger

I put links to each Dual Battery Charger reviews at Amazon page in the description, So you can check out the other reviews at Amazon.

1. ProMariner 43012 ProSport 12 12 Amp, 12/24 Volt, 2 Bank Generation 3 Battery Charger

2. ChargePro On-Board Waterproof Battery Chargers

3. ChargePro On-Board Waterproof Battery Chargers(GoPro Official Accessory)

4. Battery Charger for Craftsman C3 9.6V to 19.2V, Fhybat Replacement DieHard XCP Compact 19.2 Volt Smart 130279005 11375 11376 Ni-Cd & Lithium-Ion Charger

5. GoPro Dual Battery Charger + Battery for HERO7/HERO6 Black/HERO5 Black (GoPro Official Accessory)