KUAIQU DC Lab Power Supply 30V 60V 120V Adjustable Voltage Regulator Preset Voltage Current Fast Charging Bench DC Power Supply

✨Our adjustable DC switching power supplies (models SPS‑C3010S, SPS‑C605S, SPS‑C1203S and SPS‑C305S) undergo burn‑in testing with different load resistors before shipment, ensuring customers receive only qualified products.

✨Differences between the PCB boards of other brands' switching power supplies and the KUAIQU SPS-C3010S PCB board

It can be seen that our KUAIQU SPS-C3010S outperforms other low-cost power supplies in terms of EMI input filtering, main power transformer, filter capacitor configuration, PCB layout and craftsmanship, high-current path design, heat dissipation and reliability.

🔥How to set the output to constant voltage (CV) or constant current (CC) mode

This DC adjustable switching power supply supports automatic constant current (CC) and constant voltage (CV) output, and switches automatically according to the voltage and current required by the load.
As shown in the video, the fan is rated at 12V 0.34A. If we set the power supply to 12V 0.2A—lower than the actual current the fan needs—the unit will enter constant current (CC) mode.When we turn up the current beyond the fan’s required value, the power supply will switch to constant voltage (CV) mode.
In CV mode, the output voltage stays fixed, while the current automatically adjusts to match the load’s needs.In CC mode, the output current remains constant, while the voltage varies according to the load’s voltage requirement.

✨KUAIQU SPPS-C305(0~30V 0~5A 150W) SPPS-C3010(0~30V 0~10A 300W) SPPS-C605(0~60V 0~5A 300W) SPPS-C1203(0~120V 0~3A 360W)

⚡ Voltage Stability & Precision: The SPPS‑C series adopts encoder knobs. Compared with traditional potentiometers, they deliver more precise adjustment and longer service life, effectively alleviating concerns about voltage drift. Load regulation (Voltage ≤0.3% +10 mV), setting accuracy (≤0.05% +10 mV).
🔌 Current Limiting & Protection Functions: The SPPS‑C series supports automatic CV/CC switching and features an output ON/OFF button for safe mode switching. Current setting accuracy (≤0.01% +10 mA), load regulation (≤0.1% +2.5 mA).
🌊 Ripple and Noise: Ripple specifications (Voltage ≤60mVp-p, Current ≤10mArms for C305)
🔥 Thermal Dissipation & Safety: The fan adjusts its speed automatically according to temperature, helping maintain low noise under light load. It is equipped with overvoltage, overcurrent, overtemperature and short-circuit protection.
🏗️ Build Quality & Durability: Metal housing for robust construction. The power cord and output cables are made of high-quality materials.
📏 Actual Load Capacity: Supports 24-hour full-load output. Full-load rise time (≤300ms), efficiency (≥85%).
🏷️ Certification & Compliance: The SPPS‑C series is certified with CE, RoHS and FCC. The product delivers reliable safety and compliance performance.

✨KUAIQU SPS-C305S(0~30V 0~5A 150W) SPS-C3010S(0~30V 0~10A 300W) SPS-C605S(0~60V 0~5A 300W) SPS-C1203S(0~120V 0~3A 360W)

🛡️ Reliability: High output accuracy and excellent stability. It features high resolution of 1 mV（10mV） / 1 mA and setting accuracy (≤0.05% +10 mV). Ripple performance ≤60 mVp-p / ≤10 mVrms for C305S. It supports 24-hour full-load output and can run continuously for 8–10 hours daily without any issues.
🔌 Safety: Independent panel buttons allow direct configuration and control of OCP (Over Current Protection) and OVP (Over Voltage Protection) functions to prevent accidental operation from damaging expensive equipment. The dedicated Output button enables instant output cutoff for safe control. Equipped with well-designed heat dissipation, it features overvoltage, overcurrent, overtemperature and short-circuit protection.
🎛️ Ease of Use: Encoder knobs deliver precise adjustment and long button service life. The output switch safely cuts off output to prevent live wiring operations and protect sensitive circuits. Clear coarse/fine adjustment knobs help you save operating steps.
🔇 Noise: Intelligent temperature-controlled fan maintains quiet operation under light load. The button buzzer can be disabled for silent operation.
🔋 Performance & Specifications: No inflated ratings. Rated at 30V 10A, it supports up to 32V 10.1A to deliver the maximum rated power output. It comes with an extra USB fast-charging port supporting mainstream fast-charging protocols including PD3.0, QC2.0/3.0, FCP, AFC, PE1.1/2.0 and Apple 2.4A. You can fast-charge your phone while repairing devices.
📦 Accessories & After-sales Service: High-quality power cord and output test cables. Packaged in corrugated carton with foam padding to deliver a great unboxing experience for buyers. It comes with 1-year after-sales support. Spare parts for repair are available even if faults occur after one year. We hope you will keep trusting the SPPS-CxxS series.

✨KUAIQU SPPS-C305C(0~30V 0~5A 150W) SPPS-C3010C(0~30V 0~10A 300W) SPPS-C605C(0~60V 0~5A 300W) SPPS-C1203C(0~120V 0~3A 360W)

🛡️ Safety: Toggle the Battery key to activate reverse connection protection and avoid burnout caused by reversed positive and negative polarity. It automatically cuts off output once fully charged to prevent battery damage from overcharging. Equipped with Over Current Protection (OCP), overtemperature protection and short-circuit protection to safeguard equipment and personal safety.
🎯 High Charging Precision: Voltage resolution of 1 mV (10 mV) and current resolution of 1 mA. Setting and readback accuracy reaches up to 0.05%+10 mV. Ripple is as low as ≤60 mVp-p (SPPS-C305C). It will not damage delicate motherboards and batteries. Even minor deviations in the charge cutoff voltage may affect service life or safety, and high precision helps extend your battery life.
⚙️ Ease of Use: Automatic smooth CC/CV switching with clear indicators to show the active mode. It displays the charged capacity in Ah (ampere-hours) in real time for intuitive charging progress monitoring. The coarse/fine adjustment encoder knobs enable more precise voltage and current setting while simplifying operation steps. The independent output ON/OFF key safely cuts off output to prevent live wiring operations and protect sensitive circuits. The buzzer can be muted for quiet operation.
💪 Reliability: It maintains stability during long-duration charging. The temperature-controlled fan provides effective heat dissipation and keeps quiet operation under light loads. The SPPS‑CxxC series is certified with CE, RoHS and FCC. The product delivers reliable safety and compliance performance.