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ZK-SJ4 35W Solar Charge Controller Module Lithium Battery Lead Acid Battery Charger Boost Buck Circuit Board Constant Current

Original price was: 600.00৳ .Current price is: 445.00৳ .

  • ⚡ Wide input range: DC 4.8–30V, output adjustable from 0.5–30V
    🔁 Boost & buck capable—maintains stable output across input changes
    🔥 High power MOS + Schottky diode for better performance than XL6009
    🔋 Constant current mode—perfect for battery charging and LED driving
    🛡️ Built-in anti-backflow protection—no extra diode needed
    🌡️ Natural cooling supports 35W, enhanced cooling up to 60W
    🔧 Output current: stable 3A, peak 4A with heat sink
    📐 Size: 68×37×22mm with 3mm mounting holes
    📊 Efficiency ~88%, working frequency 180KHz
    📦 Includes 1× module—ready for integration
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Description

Product Description

Introduction:

Wide voltage input DC4.8-30V, wide voltage output 0.5-30V, can both boost and step down. For example, if you adjust the output voltage to 18V, then the input voltage will change between 5-30V and will output 18V constant; For example, if you input 12V, adjust the potentiometer to set any output of 0.5-30V.
High power, high efficiency and better performance than the XL6009/LM2577 solution. It uses an external high-power MOS to package large current and high-voltage Schottky diodes.
The current can be set to limit the output current, constant current drive, battery charging and other occasions.

It has its own output anti-backflow function, so you don’t need to add anti-backflow diode when charging the battery.Feature:

Input voltage: 4.8-30V
Output voltage: 0.5-30V
Output current: can work stably at 3A for a long time, and can up to 4A under enhanced heat dissipation
Output power: natural heat dissipation 35W, enhanced heat dissipation 60W
Conversion efficiency: about 88%
Short circuit protection: Yes
Working frequency: 180KHZ
Dimensions: 68 x 37 x 22mm (L*W*H), mounting aperture: 3mm

Weight 38.7gPackage includes:

1 x Module

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