How to make lead acid battery charger

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• How to make 12v DC pow...
Hello viewers, In this video you will learn how to make a 12v Auto Cutoff battery charger using computer power supply, DC-DC boost converter and Charge Controller module.
For this video, i will be using a DC-DC buck boost converter module that comes with a part number HW-140 but you can use any DC-DC boost converter module for this purpose.
Also, a computer power supply is a good source of 12 volt with high amperes which is desirable for designing this device.
Since a computer power supply provides a maximum of 12.5 volts at its output terminals, we cannot use it to charge a 12v battery because any dry or lead acid battery requires at least 13 volts at its input terminals to charge it properly that is why we need a DC-DC boost converter which is an excellent option for this device as it step-up the voltage that is provided at its input terminals to any desired range.
Also, in order to introduce an Auto Cutoff feature we need to add a charge controller module (HCW-M632) which provides the flexibility to control the charging of a 12v or 24v battery. These modules are now easily available online.
HW-140 Description:
Buck - Boost Module (Constant Voltage Constant Current LCD Version)
1. Product Highlights:
1.1 LCD input and output voltage, output current output power;
1.2. Input anti-reverse protection, reverse connection will not burn;
1.3. It can step up and step down, the output voltage can be adjusted freely from 0.5-30V, and the current limit of 0-4A can be adjusted arbitrarily;
1.4 output anti-intrusion, no additional anti-backflow diode is needed for battery charging;
1.5. The button controls the output on/off status, and you can set the power on or off by default;
1.6. The rising and falling chips are used as the main controller, the external 60V 75A MOS tube is used as the switch, and the dual 60V 5A SS56 Schottky rectification, 60V voltage value, is superior to the immature XL6009 / LM2577 solution on the market (many devices have insufficient pressure values, MOS The pressure value of the tube and Schottky diode must be greater than the input plus input voltage value);
1.7. Small output ripple, LC filter;
1.8. With a heat sink, the transmitter module supports the isolation column.
Parameter:
Input voltage: 5.5-30V (input voltage 5V, can achieve normal buck - boost, but the voltage and current meter values are not accurate; below 4.7V, under voltage protection)
Output voltage: 0.5-30V
Output current: stable operation in 3A for a long time, strengthening heat up to 4A
Output power: 35W natural heat dissipation, heat dissipation 50W
Voltage display resolution: 0.05V
Current display resolution: 0.005A
Conversion efficiency: about 88%
Soft start: Yes (load startup is very powerful, startup may fail)
Input reverse protection: yes
Output anti-intrusion: yes
Short circuit protection: yes
Working frequency: 180KHZ
HCW-M632 Charge Controller Module:
Feature:
1. For 12‑24V Battery: Universal digital display battery charging control board, suitable for 12‑24V various storage batteries, extending battery life.
2. Control On and Off: The main board controls one of the wires of the charger through a relay to achieve the function of controlling the charger output on and off.
3. Multiple Functions: With full automatic power off, automatic charging when power is lost, and real time voltage monitoring functions.
4. Memory Value Setting: Support memorizing the set value, automatically keep after setting, no need to set again.
5. High Performance: 1.6mm thick double layer circuit board, RF‑4 dense glass fiber material, has high mechanical strength and high dielectric performance.
6. Fine Production: The layout of the circuit board is beautiful, and the chip technology is adopted, and each plugin is professionally welded.
Specification:
Item Type: Charging Control Module
Product Model: HCW-M632
Input Voltage: DC10-30V
Control Current: 20A maximum
Control Accuracy: 0.1V
Output Type: Direct output
Voltage Error: ±0.1V
Application: 12-24V various storage batteries
Product Size: Approx. 82 x 58 x 18mm / 3.2 x 2.3 x 0.7in
If you have enjoyed this video, then please subscribe to my channel where i will be uploading more interesting videos related to electronics and Radio link.
Also watch my other interesting videos on RUclips:
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Battery charger
12v battery charger
24v battery charger
DC-DC buck converter circuit module
DC-DC boost converter circuit module
DC-DC buck boost converter circuit module
DC-DC step down converter
DC-DC step up converter
Computer power supply
12v power supply

[@kitisakt]

Very good and clear explanation. Thank you for your effort and sharing!! ^^

[@ERLEngineering]

Thank you. Keep visiting this channel for more interesting videos.

[@husniamasom5597]

ماشاءالله ماشاءالله ماشاءالله ماشاءالله ماشاءالله ماشاءالله ماشاءالله

[@RixtronixLAB]

Nice video, thanks for sharing :)

[@ERLEngineering]

Thank you for your nice feedback ☺️

[@sathyanp.g2000]

How do we consider the difference in multimeter reading and volt meter reading in the module ??or we set according to multimeter reading ?

[@ERLEngineering]

Dear, please always consider the multimeter reading because the module voltmeters are cheap and they do not provide accurate voltage reading.

[@alizulfiqar4404]

ماشاءالله

[@ERLEngineering]

Thank you sooo much 😊