N4-C1 lead-acid battery charger

The main chip of N4-C1 lead-acid battery charger
is CN3767
parameters:
1. The maximum charging current is 4A.
2. Suitable for 1 12V lead-acid battery.
3. The input voltage is 15.2V~28V.
Charging process diagram:
Notes:
1. In humid and rainy environments, it is recommended to waterproof the circuit board. You can apply 704 silicone rubber on the front and back of the circuit board, or put it in a waterproof box.
2. Do not connect the positive and negative poles reversely, otherwise it will cause permanent damage to the product.
3. As shown in the figure below, L1 is a micro 47uh ring inductor, and R2 is a 30 milliohm constantan wire resistor. Usage scenarios: small solar storage system, solar night light...
Using this module and the adjustable light control switch I posted before, I made a solar night light at home, and the effect is very good.
Light control switch link: Adjustable light control switch - Jialichuang EDA open source hardware platform (oshwhub.com)
solar night light module connection diagram:
This product is strictly prohibited from being sold or plagiarized on other platforms and websites without the author's consent!
Please abide by the open source agreement. It is only used for personal DIY and cannot be sold commercially!
If you have any questions, please leave them in the comment area below and I will reply as soon as possible!