10 Best Benchtop Power Supplies Under 100 in 2026: Reliable Budget Picks for Electronics Projects

Finding a dependable bench power supply on a tight budget does not have to mean settling for weak output or clumsy controls. The best affordable units balance stable regulation, clear readouts, and enough current for common electronics work.

Below, we focus on benchtop power supplies under 100 that are practical for hobbyists, repair work, prototyping, and light lab use.

Best 10 Benchtop Power Supplies Under 100 Picks for 2026

Compact Precision Bench Unit – NICE-POWER 30V 10A DC Bench Supply

If you want benchtop power supplies under 100 that prioritize clarity and control, this NICE-POWER unit is built for practical electronics work. It offers a 30V/10A output, a 4-digit LED readout with voltage, current, and power shown in real time, and an output switch so you can adjust settings before energizing the load.

Best For: Users who want a compact, easy-to-read bench supply with USB charging and safety-focused output control.

Pros:

• 0.01V and 0.001A resolution with a bright 4-digit display
• Output switch helps prevent accidental load damage
• Includes 5V/2A USB charging port
• Multiple protections, including over-voltage, over-current, over-load, and short-circuit

Cons:

• 110V input only; 220V input is not available
• 2.6 lb portable design is compact, but not as heavy-duty as larger lab units

This is a strong pick if you value a simple front panel, real-time output feedback, and built-in safeguards. It fits well in a home bench or light lab setup where convenience matters as much as basic voltage and current range.

Classic Linear Workhorse – Tekpower TP3005T 0-30V 0-5A Supply

For shoppers comparing benchtop power supplies under 100, this Tekpower model stands out as a straightforward linear option with a 0-30V, 0-5A range. It uses constant voltage and constant current modes, plus a back-lit LED display, making it a familiar pick for general bench testing.

Best For: Buyers who want a traditional linear bench supply with a simple interface and included test leads.

Pros:

• 0-30V and 0-5A output range
• Constant voltage and constant current modes
• Back-lit LED display with 0.1V and 0.01A resolution
• Includes alligator test leads and a 1-year warranty

Cons:

• Large and heavy at 12 pounds
• No USB charging ports or digital extras

This is a practical no-frills choice if you want a dependable bench supply focused on the basics. It is less compact than newer switching units, but it gives you the conventional linear behavior many users prefer for general electronics work.

Feature-Rich Value Pick – NANKADF 30V 10A Encoder Supply

If you’re browsing benchtop power supplies under 100 and want the most features per dollar, this 30V/10A unit is built around fine adjustment and convenience. The encoder knob lets you set voltage or current digit by digit, and the output enable/disable button helps you work without accidentally powering the load.

Best For: Makers and hobbyists who want precise digital adjustment plus USB-A and USB-C charging ports.

Pros:

• Encoder knob allows digit-by-digit voltage and current adjustment
• Output enable/disable button adds safer control
• USB-A and USB-C 18W fast-charging ports
• OCP protection with short-circuit alarm

Cons:

• Fan-cooled 300W design may be more than needed for simple low-power tasks
• Beep sounds may need to be muted for quiet workspaces

This model is a strong fit if you want a bench supply that feels modern and flexible without giving up core safety functions. It is especially appealing when you need both precise output setup and convenient charging ports on the same unit.

Portable Color Display Option – FNIRSI DPS-150 30V 5A Supply

Among benchtop power supplies under 100, the FNIRSI DPS-150 is a compact choice for users who want a smaller footprint and a more modern display. It supports 30V/5A output, a 2.8-inch IPS color screen that flips 90 degrees, and multiple input modes including PC, QC, and DC.

Best For: Portable electronics testing and DIY work where display quality and flexible connections matter.

Pros:

• Compact 30V/5A, 150W output
• 2.8-inch IPS color screen with 90° flip support
• Supports PC programmable output and six preset parameter groups
• Multiple connection options: banana heads, U-shaped terminals, and fine copper wires

Cons:

• No power adapter included
• Battery charging needs reverse current protection added at the output

This unit makes sense if you want a small, feature-dense supply for bench use, testing, or DIY setups. The color screen and preset functions add convenience, while the compact form factor keeps it easy to place in tighter work areas.

Precision Pick – 30V 10A Bench Supply with Encoder Control

If you want benchtop power supplies under 100 that feel easier to dial in than basic knob units, this HANGELL model is built around precision encoder control. It offers coarse and fine adjustment, a 4-digit LED readout, and CV/CC operation, making it a practical fit for electronics work where repeatable settings matter.

Best For: Users who want accurate voltage/current adjustment, safety protections, and a clear display for lab or DIY bench use.

Pros:

• Encoder knob supports coarse and fine adjustment for more precise setting control.
• 4-digit LED display shows 0.01V and 0.001A resolution for detailed readout.
• Includes output on/off switch plus short circuit alarm and protection features like overvoltage, overcurrent, overtemperature, and overload.
• Built-in 18W USB and Type-C quick-charge output adds extra convenience.

Cons:

• Fixed 100V to 220V AC input range may not suit every region without checking compatibility.
• 300W output rating is listed, but this is still a benchtop unit with a compact form factor rather than a heavy-duty industrial supply.

This is a strong all-around option if you value adjustment precision and safety features over the simplest possible layout. The combination of encoder control, display clarity, and output switching makes it especially useful for careful bench testing.

Compact Value – 150W Encoder PSU for Tight Workspaces

Among benchtop power supplies under 100, this NICE-POWER unit stands out for packing a 0-30V adjustable range, encoder-based setting, and a very compact body into a budget-friendly format. It is designed for users who need a small supply that can be switched between 15V 10A and 30V 5A within its 150W limit.

Best For: Makers and technicians who need a small, portable bench supply for general electronics, DIY work, and space-limited setups.

Pros:

• Very compact and lightweight design makes it easy to fit into crowded benches.
• Encoder buttons allow precise voltage and current setting instead of older potentiometer-style controls.
• Automatic fan cooling helps manage heat during use.
• Wide 100V to 240V AC input support is useful for international compatibility.

Cons:

• Output is capped at 150W, so the available voltage and current trade off against each other.
• The display is 3-digit rather than higher-resolution 4-digit setups.

This is a sensible pick if space and simplicity matter most. It gives you the core features you need for bench testing in a small footprint, while staying within a modest power envelope.

Memory Helper – 50V Supply with Presets and USB Output

If your priority is a versatile bench unit for repeated testing, this HYELEC model brings memory presets, a 4-digit display, and a 5V 2A USB interface to the table. For buyers comparing benchtop power supplies under 100, it offers a broader 0-50V range than many entry-level units while keeping the controls focused on practical bench work.

Best For: Users who want saved presets, USB power, and a wider voltage range for repair, charging, and lab tasks.

Pros:

• Three memory groups let you save and recall commonly used settings.
• 4-digit LED display and encoder adjustment support fine tuning of voltage and current.
• Includes output enable/disable button plus short circuit, overvoltage, and overcurrent protection.
• 5V 2A USB port adds a handy power source for phones and pads.

Cons:

• Only supports 110V input and does not offer a 220V option.
• 6A output current is lower than some other bench supplies in this category.

This model makes the most sense if you want convenience features that speed up repeated tasks. The memory function and USB port are especially useful for repair benches and DIY setups where you move between similar settings often.

Compact Safety-Focused Supply – Kungber 30V 10A Adjustable DC Bench Supply

If you’re comparing benchtop power supplies under 100 for repair, lab, or DIY use, this Kungber unit stands out for its safety features and compact footprint. It offers 0-30V and 0-10A output, plus intelligent charging mode that can track charging power and stop when the battery is full.

Best For: Bench users who want a small, safety-oriented supply with battery charging support and a USB port.

Pros:

• Intelligent charging mode shows real-time Ah and stops when the battery is full.
• Built-in protections include overcurrent alarm, thermal protection, overload protection, leakage protection, and short-circuit protection.
• Compact 2.3 lb design fits easily on a crowded bench.
• Includes an 18W USB port for quick device charging.

Cons:

• Uses a single encoder-control style rather than separate coarse and fine adjustment knobs.
• The plastic enclosure may feel less rugged than metal-cased alternatives.

Overall, this is a practical choice if protection and charging features matter more than having the most advanced interface. It’s aimed at general lab and repair work, with enough output for a wide range of small electronics tasks.

Memory-Preset Repair Pick – WANPTEK 30V 10A Bench Power Supply

For shoppers searching benchtop power supplies under 100, this WANPTEK model is built around convenience features that help on a repair bench. It delivers 0-30V and 0-10A output with encoder-based fine control, three memory presets, and an output switch that helps prevent sparks while wiring.

Best For: Repair technicians and lab users who repeat the same voltage settings often.

Pros:

• Three memory presets let you save and recall common settings with M1/M2/M3.
• Output switch, OCP protection, and key lock add practical safety and control.
• Encoder knob supports digit-by-digit adjustment for precise tuning.
• Built-in USB port and clear 4-digit LED display improve day-to-day usability.

Cons:

• The included test leads are described as light-duty, not ideal for heavy use.
• U.S. users must set the rear 115V/230V switch to 115V before use.

This is a strong fit if you value workflow speed and repeatability more than extra bells and whistles. The preset storage and output control make it especially handy for repair routines and frequent test setups.

Fine-Tuning Value Pick – WANPTEK 30V 10A Variable Power Supply

This WANPTEK supply is a useful option if you want benchtop power supplies under 100 with a little more control over adjustment. It combines coarse and fine encoder knobs, 0-30V and 0-10A output, and both USB and Type-C fast-charging ports for extra bench convenience.

Best For: Users who want precise voltage setup and modern charging ports in a budget bench supply.

Pros:

• Coarse and fine knobs make voltage and current setting more efficient.
• USB and Type-C ports provide 5V/3.6A fast charging for phones or repair devices.
• Short-circuit alarm and multiple protections help guard connected equipment.
• Automatic voltage detection supports 110V and 220V inputs without manual switching.

Cons:

• The unit uses a fan-cooled design, so it is not passive or silent.
• It lacks the memory presets found on some competing models.

For buyers who care about adjustment speed and modern charging ports, this model covers a lot of ground. Its combination of fine control and automatic input detection makes it easy to drop into a busy bench setup.

How We Picked These Benchtop Power Supplies Under 100

We prioritized units that offer useful voltage and current ranges, stable adjustable output, clear displays, and features that matter in daily use. That includes coarse/fine adjustment, output switching, memory presets, USB charging ports, and basic protection such as OCP or intelligent charging modes.

We also favored models that suit real-world bench work rather than inflated specs that are hard to use or less consistent under load.

Quick Comparison

For most buyers, the right choice comes down to workload. A 30V/5A supply is often enough for hobby circuits, small modules, and testing. A 30V/10A unit gives more headroom for motors, larger boards, and general-purpose bench use. If you need broader voltage range, a 0-50V model is worth a look, while linear supplies may appeal if low-noise output matters more than extra features.

Key Buying Factors for Benchtop Power Supplies Under 100

Voltage and Current Range

Check both limits, not just the headline wattage. A supply that reaches 30V and 10A is versatile, but only if you actually need that current. If your projects are smaller, a 5A model may be simpler and easier to manage.

Adjustment Controls and Display

Encoder knobs with coarse and fine control make it easier to dial in exact settings than basic single-knob designs. A clear digital display helps you set voltage and current accurately and catch unexpected load behavior quickly.

Protection and Usability Features

Look for output on/off control, over-current protection, preset memory, and extra USB ports only if they match your workflow. These features do not replace solid regulation, but they can make a budget supply much more convenient.

Noise, Size, and Build Style

Switching supplies are usually compact and efficient, while linear units can be preferred in sensitive analog work. Choose based on where you will use it: a small bench, a repair station, or a shared workspace.

Who Should Buy Which Benchtop Power Supplies Under 100?

If you are a hobbyist or beginner, a straightforward 30V 5A or 30V 10A model with clear readouts is usually the safest buy. If you repair devices or test a lot of mixed electronics, choose a unit with encoder adjustment, memory presets, and output switching. If your work involves more demanding loads, a higher-current or wider-range option will give you better flexibility.

For shoppers comparing Benchtop Power Supplies Under 100, the best value usually comes from matching the supply to your most common tasks instead of chasing the largest number on the spec sheet.