10 Best Benchtop Power Supplies Under $300 for Precise Bench Testing in 2026

The right bench supply makes prototyping, repair, battery work, and electronics testing more controlled and repeatable. This roundup compares 10 variable DC models priced below $300, spanning compact everyday units and higher-voltage options.

We focused on adjustable output, display readability, control precision, safety-minded features, and practical connectivity so you can match a supply to your workspace and workload.

Best 10 Benchtop Power Supplies Under 300 Picks for 2026

Best Compact High-Output Pick – Jesverty SPS-3010V 32V/10A Bench Supply

For shoppers comparing benchtop power supplies under 300, the Jesverty SPS-3010V combines a 0–32V, 0–10A output with a compact enclosure and convenient charging ports. Its encoder controls and output switch make routine adjustments straightforward for electronics projects, repairs, and lab work.

Best For: Users who want high current, fine adjustment control, and USB charging in a space-saving bench supply.

Pros:

• 0–32V and 0–10A output with 0.01V/0.001A setting resolution.
• Separate coarse and fine encoder knobs simplify precise adjustments.
• Includes USB-A and USB-C ports with 20W quick charging.
• Output ON/OFF button, OCP protection, and temperature-regulated cooling fan.

Cons:

• Included test leads are described as giveaway accessories and may not suit sustained high-current use.
• AC input configuration and included power cord can vary by destination.

This is a strong all-around option when bench space and output current both matter. The compact 2.5-pound design is especially useful for DIY electronics, maintenance, and portable work setups.

Best High-Voltage Choice – UNI-T UDP6721 60V/8A Supply

The UNI-T UDP6721 stands out among benchtop power supplies under 300 for its 0–60V range and 180W maximum output. Its single-channel design, TFT display, and compact form make it a practical choice for bench testing and general electrical engineering work.

Best For: Professionals and advanced hobbyists who need higher adjustable voltage in a compact switching supply.

Pros:

• Offers a broad 0–60V output range with up to 8A.
• 180W maximum output supports varied bench-testing tasks.
• 2.8-inch TFT LCD provides clear voltage and current monitoring.
• Compact design measures approximately 3.5 by 7 by 10 inches.

Cons:

• It is a single-channel supply, limiting simultaneous independent outputs.
• The supplied notes do not list USB charging, memory presets, or an output enable button.

Choose the UDP6721 when voltage range is more important than extra convenience features. Its 60V ceiling and five-year warranty make it an appealing fit for demanding bench and lab applications.

Best Safety-Focused Value – NANKADF 30V/10A Encoder Supply

For buyers seeking benchtop power supplies under 300 with direct controls and protective features, the NANKADF 30V/10A model offers a precise encoder, four-digit display, and output enable/disable button. It is suited to electronics repair, testing, and other adjustable DC applications.

Best For: Users who prioritize precise digit-by-digit adjustment and short-circuit protection.

Pros:

• Encoder lets users select individual digits for voltage or current adjustments.
• Four-digit display shows readings to 0.01V and 0.001A.
• Output button helps prevent accidental energized-load conditions.
• OCP can stop output and sound an alert during a short circuit; an 18W USB charging port is included.

Cons:

• The supplied specifications identify a 115V input rather than a selectable input.
• The notes contain inconsistent wattage information, listing both 100W and 300W figures.

This model offers a useful balance of adjustment precision and user protection. Its output control and OCP alert are particularly helpful when working on repaired or frequently changed loads.

Best for Preset Workflows – HYELEC HY50-06A 50V/6A Supply

The HYELEC HY50-06A is a versatile option among benchtop power supplies under 300, pairing a 0–50V, 0–6A output with three memory presets and a 5V/2A USB interface. Its output switch, four-digit display, and protection features suit repeatable testing and repair tasks.

Best For: Users who frequently return to the same voltage and current settings for repair, maintenance, or DIY projects.

Pros:

• Provides 0–50V and 0–6A output with up to 150W.
• M1, M2, and M3 memory buttons store and recall settings.
• Four-digit LED display offers 0.01V and 0.001A precision.
• Includes output enable/disable, short-circuit, overvoltage, and overcurrent protection.

Cons:

• Uses a 110V-only input and does not provide a 220V option.
• USB interface is rated at 5V/2A rather than the faster charging levels offered by some competitors.

The HY50-06A is a sensible pick for repeatable bench routines. Its memory buttons reduce setup time, while the 50V range and protection package cover a broad set of electronics and maintenance applications.

High-Power Pick – NICE-POWER 100V/10A Benchtop Supply

For shoppers comparing benchtop power supplies under 300, the NICE-POWER R-SPS10010 stands out for its high 100V, 10A, 1000W output. Its encoder controls, four-digit display, and automatic constant-voltage/constant-current operation make it suited to demanding bench, testing, and charging tasks.

Best For: High-power laboratory work, aging tests, electronics maintenance, LED applications, and battery charging.

Pros:

• Provides up to 100V and 10A, with 1000W output capacity.
• Encoder adjustment allows digit-by-digit voltage and current setting.
• Includes over-voltage and over-current protection with automatic CV/CC indication.
• Temperature-activated intelligent cooling fan supports extended use.

Cons:

• Its higher-power design is larger and heavier than the compact alternatives.
• The included low- and high-power output cables are application-specific, so heavier-duty leads may be needed for some setups.

Choose this model when maximum output is more important than minimal bench footprint. The compact 3.3 kg enclosure remains portable, while the high power range broadens its usefulness for serious testing and charging work.

Compact Precision Pick – Jesverty SPS-12003 120V/3A Supply

Among benchtop power supplies under 300, the Jesverty SPS-12003 is a compact option for projects needing adjustable voltage up to 120V and current up to 3A. Its four-digit display shows voltage, amperage, and wattage in real time, while coarse and fine controls help with precise adjustments.

Best For: Electronics projects, educational benches, repair work, and users who need high voltage at modest current.

Pros:

• Adjusts from 0-120V and 0-3A.
• Displays V/A/W readings with up to 0.01V, 0.001A, and 0.1W resolution.
• Automatically switches between constant-voltage and constant-current modes.
• Compact 2.5-pound design includes a 5V/2A USB port and temperature-regulated fan.

Cons:

• Its 3A output is less suitable for high-current applications.
• The included test leads are described as a giveaway; higher-current or long-term work may require upgraded leads.

This supply is a sensible fit when fine adjustment, live power calculations, and portability matter more than high amperage. Its compact enclosure saves bench space, but users should match the included leads to their intended load.

Smart Charging Pick – Jesverty SPS-3010C 32V/10A Supply

For benchtop power supplies under 300 that combine everyday bench output with charging features, the Jesverty SPS-3010C offers adjustable 0-32V and 0-10A output. Encoder controls, output switching, USB-A and USB-C charging ports, and an intelligent battery-charging mode make it a versatile choice for electronics projects.

Best For: Arduino and Raspberry Pi projects, battery charging, repair work, education, and general-purpose electronics testing.

Pros:

• Provides adjustable output up to 32V and 10A.
• Coarse and fine encoder knobs support 0.01V and 0.001A setting resolution.
• USB-A and USB-C ports support 20W quick charging.
• Intelligent charging can stop automatically when a battery is full and includes reverse-connection protection.

Cons:

• The 32V maximum is lower than the 120V and 100V options in this roundup.
• Its USB output is rated at 20W, so it is intended for charging and module power rather than high-power loads.

The SPS-3010C is the most feature-focused option here for low-voltage bench work and battery charging. It offers useful convenience features in a compact 2.5-pound body, while its 32V ceiling keeps it focused on electronics rather than high-voltage testing.

Best with Extra Features – Jesverty SPS-3010

For shoppers comparing benchtop power supplies under 300, the Jesverty SPS-3010 combines a 0–30V, 0–10A output with a compact, lightweight design. Its four-digit display shows voltage, current, and wattage in real time, while separate coarse and fine adjustment controls support more precise setup.

Best For: Space-conscious electronics work, repairs, and projects requiring up to 300W of adjustable DC output.

Pros:

• Displays V/A/W readings with resolutions of 0.01V, 0.001A, and 0.1W.
• Automatically switches between constant-voltage and constant-current modes.
• Compact 2.5-pound body with a 5V/2A USB port.
• Includes short-circuit, overload, and temperature-related protection features.

Cons:

• Included test leads are described as giveaway leads and may not suit prolonged high-current use.
• The listed input configuration is 120V AC, so buyers should verify compatibility.

The SPS-3010 is a practical value option when portability and clear output readings matter. Its 300W ceiling and compact enclosure make it well suited to general bench work, though demanding high-current applications may call for upgraded leads.

Control-Focused Choice – HANGELL HPS3010

Among benchtop power supplies under 300, the HANGELL HPS3010 stands out for its encoder-based coarse and fine adjustment system. It provides 0–30V and 0–10A output, plus an output switch that lets you set values before applying power to the connected load.

Best For: Lab benches and repair work where controlled adjustments, output switching, and safety alerts are priorities.

Pros:

• Encoder knob supports coarse or fine adjustment and digit selection.
• Output switch allows voltage and current changes without active output.
• Four-digit display resolves voltage to 0.01V and current to 0.001A.
• Includes short-circuit alarm plus overvoltage, overcurrent, overtemperature, and overload protection.

Cons:

• The unit weighs about 1.2kg, making it less lightweight than the smallest options.
• It has a 300W maximum output, which may limit higher-power applications.

The HPS3010’s strongest advantage is its hands-on control layout: the encoder, output switch, and short-circuit alarm can make repeated testing more deliberate. Its USB and Type-C quick-charge features add utility, while the 300W rating keeps it aimed at standard bench applications.

Safety-Oriented USB Pick – NICE-POWER 30V 10A

The NICE-POWER variable supply is a strong contender for benchtop power supplies under 300, offering 0–30V and 0–10A adjustable output with a dedicated OUTPUT switch. Its display reports voltage, current, and power, and the built-in USB port can charge compatible devices at 5V/2A.

Best For: General electronics work where output control, readable measurements, USB charging, and multiple protection features are useful.

Pros:

• Four-digit backlit display provides 0.01V and 0.001A resolution while showing output power.
• OUTPUT key lets users adjust settings without applying power to the load.
• Includes 5V/2A USB charging and temperature-controlled cooling.
• Lists protection against overvoltage, overcurrent, overtemperature, overload, and short circuits.

Cons:

• The supplied unit uses 110V input; 220V input is not available.
• Its listed dimensions are 8.4 × 3.3 × 5.5 inches, larger than some compact alternatives.

This NICE-POWER model emphasizes convenient operation and protection rather than an unusually small footprint. The output switch and intelligent fan are useful for routine testing, while the 300W capacity covers many hobbyist and service-bench tasks.

How We Picked the Best Benchtop Power Supplies Under 300

We compared the selected supplies by output range, maximum current and wattage, adjustment controls, display design, connectivity, and useful bench features. Models with encoder controls, coarse and fine adjustment, output enable switches, memory functions, USB ports, or charging modes received extra consideration because these features can improve daily workflow.

Specifications still matter most. A supply rated for 30V and 10A is not automatically the best choice for every project, while a 60V or 120V model may be more useful when voltage headroom matters more than current. Buyers should also verify the manufacturer’s protection features, cooling approach, included leads, and electrical specifications before purchase.

Quick Comparison

Best For	What to Prioritize
General electronics work	0–30V or 0–32V output, adjustable current limiting, clear display
Higher-voltage experiments	50V, 60V, or 120V maximum output with stable regulation
Higher-power projects	Greater wattage and current capacity, plus effective cooling
Charging and portable devices	USB-A or USB-C ports and dedicated charging modes
Repeatable testing	Memory presets, output enable controls, and fine adjustment

Key Buying Factors for Benchtop Power Supplies Under $300

Voltage, Current, and Power

Choose a voltage range that covers your current projects with some headroom. Current capacity should exceed the needs of the device under test, but a higher rating does not force extra current into a load when current limiting is configured correctly. Check total wattage as well, since maximum voltage and maximum current may not be available simultaneously.

Controls and Readability

Encoder knobs with coarse and fine adjustment are typically easier to use than simple potentiometers when you need precise settings. A bright four-digit LED or TFT display can make voltage and current readings easier to monitor, especially across a busy bench. Output enable buttons and memory presets are valuable for repeatable setups.

Protection and Connectivity

Look for over-voltage, over-current, short-circuit, and over-temperature protection. USB and USB-C ports are convenient for powering or charging compatible devices, but they should not replace a properly regulated output for sensitive test work. Consider terminal layout, included cables, fan noise, and physical size before committing to a model.

Who Should Buy Which Benchtop Power Supplies Under 300?

For general hobby electronics, Arduino work, repairs, and small prototypes, a 0–30V or 0–32V, 10A-class supply offers a versatile balance. Choose a 50V–60V model if your projects regularly exceed standard low-voltage electronics. A 120V unit is better suited to specialized testing where voltage range is the priority, while a 100V, 10A, 1000W-class supply targets demanding applications and requires extra attention to wiring, cooling, and safety.

If convenience is central to your setup, select a model with USB or USB-C charging and an output switch. If precision and repeatability matter most, prioritize encoder adjustment, a readable display, current limiting, and memory presets over extra ports or headline wattage.