ZK-SJVA-4X 4A 30V Adjustable Buck-Boost CC/CV Module with LCD
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Prices updated: 13 Oct 2026
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About this product
ZK-SJVA-4X is an adjustable constant-voltage and constant-current step-up and step-down module with an LCD that shows input and output voltage, current and power. It can be used as a buck converter, a battery charger or an LED constant-current driver. It includes short-circuit, undervoltage and anti-reverse protection.
Specifications
- Maximum current
- 4 A / 4 أمبير
- Voltage rating
- 30 V / 30 فولت
- Regulation modes
- Constant voltage and constant current (CC/CV) / جهد ثابت وتيار ثابت
- Display
- LCD showing voltage, current, power / شاشة LCD تعرض الجهد والتيار والقدرة
- Topology
- Step-up and step-down (buck-boost) / تصاعدي وتنازلي
- Protection
- Short circuit, undervoltage, anti-reverse / قصر الدائرة، الجهد المنخفض، الحماية من القطبية العكسية
Frequently asked questions
Can I use it as a battery charger?
The listing says it can be used as a charger, with adjustable output voltage and current. Confirm the charging voltage and current required by your battery before connecting it.
Does it protect against reversed polarity?
Yes. The listing includes anti-reverse protection, along with short-circuit and undervoltage protection.
