10 Best Bench Power Supplies Under $100 in 2026: Reliable Adjustable Picks for DIY and Lab Work

Finding a dependable bench power supply under $100 is easier than it used to be. Today’s budget models can deliver stable voltage, useful current limits, and handy extras like USB charging, encoder controls, and memory presets.

This roundup focuses on practical picks for electronics hobbyists, makers, and light repair work, with an eye toward accuracy, ease of use, and overall value.

Best 10 Bench Power Supplies Under 100 Picks for 2026

Precision Pick – 30V 10A Adjustable Bench Supply

If you want bench power supplies under 100 that still feel practical for real bench work, this NICE-POWER unit is built around accurate control and easy day-to-day use. It offers a 30V/10A adjustable output, a bright 4-digit display, and an output switch so you can set values before energizing the load.

Best For: Electronics hobbyists and lab users who want a compact, safety-focused bench supply with a clear display and USB charging.

Pros:

• 4-digit LED display shows voltage, current, and power in real time.
• Output switch helps avoid accidentally powering the load during setup.
• Multiple protections include over-voltage, over-current, overload, short-circuit, and more.
• Built-in 5V/2A USB port adds convenient device charging.

Cons:

• 110V input only, so it is not suitable for 220V use.
• Best suited to moderate bench tasks rather than higher-power applications.

Overall, this is a solid fit if you value readability, safety features, and a compact footprint. It balances bench-friendly control with enough output for many repair and testing jobs.

Flip-Display Choice – 30V 5A Digital Bench Supply

Among bench power supplies under 100, this FNIRSI model stands out for its compact build and color display. It delivers up to 30V and 5A with low ripple, plus PC, QC, and DC input support for flexible desktop use.

Best For: Makers and testers who want a compact digital supply with preset storage and an easy-to-read flip display.

Pros:

• 30V/5A output with 150W maximum power and low ripple.
• 2.8-inch IPS color screen flips 90 degrees for better viewing angles.
• Supports PC programmable output with 6 preset parameter groups.
• Includes multiple connection options such as banana heads and terminals.

Cons:

• At 5A, it is not meant for higher-current bench projects.
• Battery charging use requires added reverse-current protection.

This is a useful choice if you want a small, modern supply with flexible input options and preset control. The display and programming features make it feel more advanced than a basic bench unit.

Precision Control – 30V 10A Encoder Bench Supply

If you are comparing bench power supplies under 100 and want a feature-heavy option, this 30V 10A unit is built for precise setting and everyday convenience. It combines encoder-based adjustment, an output enable/disable button, and both USB-A and USB-C charging ports.

Best For: Users who want fine control over voltage and current plus handy fast-charging ports on the same bench supply.

Pros:

• Encoder knob lets you set each digit more precisely than basic knobs.
• Output button helps prevent accidental power delivery to the load.
• Overcurrent protection adds a buzzer alert on short circuit events.
• USB-A and USB-C 18W fast-charging ports improve compatibility.

Cons:

• The included input range is 100V to 120V AC, so it is not universal.
• Display is functional, but it does not include a color screen.

This model makes sense if you want a bench supply that feels more controlled and more versatile than a bare-bones unit. Its precision adjustment and dual charging ports add real practical value.

Compact Flex Pick – Switchable 15V/10A or 30V/5A PSU

For shoppers looking at bench power supplies under 100, this NICE-POWER unit is aimed at compact setups that still need flexible output. It can switch between 15V/10A and 30V/5A within a 150W limit, and it uses encoder controls for more accurate adjustment.

Best For: DIY users and tight workspaces that need a small bench supply with flexible voltage/current combinations.

Pros:

• Switchable output modes allow 15V/10A or 30V/5A operation.
• Encoder buttons provide more precise setting than basic analog controls.
• Very compact and lightweight design fits small benches well.
• Auto-start cooling fan helps manage heat during use.

Cons:

• Overall output is capped at 150W, so it cannot exceed that limit.
• 3-digit display is less detailed than 4-digit alternatives.

This is a strong pick when space matters and you need a supply that can shift between two practical operating modes. It trades some display detail for portability and flexibility.

Precision Encoder Control – 30V 10A Bench Supply with Output Switch

If you’re comparing bench power supplies under 100, this 30V 10A unit stands out for its encoder-style adjustment and practical protection features. The digit-by-digit knob makes it easier to dial in voltage and current accurately, while the output enable button helps prevent accidental power to your load.

Best For: Users who want fine adjustment control, clear readouts, and simple output safety in a compact benchtop supply.

Pros:

• Encoder knob lets you set each digit from 0-9 for more precise adjustments.
• 4-digit LED display shows voltage to 0.01V and current to 0.001A.
• Output enable/disable button helps avoid leaving the supply on by mistake.
• Includes OCP short-circuit protection and a buzzer alert.

Cons:

• Single USB quick-charge port is helpful, but it is only listed as 18W.
• No advanced lab features beyond the basic protections and display functions.

Overall, this NANKADF supply is a practical pick if you want accurate manual control and a straightforward safety setup. It fits well in a small workbench setup where precise tweaks matter more than extra bells and whistles.

Smart Charging Protection – 30V 10A Lab Supply with USB

For shoppers looking at bench power supplies under 100, this Kungber model is a solid choice if battery charging and safety features matter most. It adds intelligent charging mode, connection detection, and overcurrent alarm protection, making it more versatile for repair and test work.

Best For: People who need a compact bench supply for charging tasks, repair work, and general lab use.

Pros:

• Intelligent charging mode stops charging when the battery is full.
• Displays charging power (Ah) in real time for battery monitoring.
• OCP overcurrent detection triggers an alarm and stops output on short circuits.
• Includes an 18W USB port plus multiple protection features like thermal and leakage protection.

Cons:

• Uses a standard encoder control, not the more advanced coarse/fine dual-knob layout.
• Best suited to common bench tasks rather than specialized high-end lab setups.

This is a good all-around bench supply if you want a compact unit with battery-aware charging behavior and strong protection features. It should appeal to users who value safety and convenience as much as output adjustment.

Coarse and Fine Tuning – 32V 10A Bench Supply with USB-C

Among bench power supplies under 100, this Jesverty unit is appealing if you want fast setup and easy voltage/current dialing. The coarse-and-fine encoder knobs make it simpler to land on the value you want, and the dual USB charging ports add convenient bench-top utility.

Best For: Users who want quick, precise adjustment with modern USB-A and USB-C charging.

Pros:

• Encoder coarse and fine knobs improve adjustment speed and precision.
• 0.01V/0.001A resolution supports detailed tuning.
• USB-A and USB-C ports both support 20W quick charging.
• Includes an output ON/OFF button and OCP protection.

Cons:

• The included test leads are described as a give-away and may not suit long-term high-current use.
• Compact size is useful, but the unit still requires proper bench setup and compatible input selection.

Overall, this Jesverty supply offers one of the most convenient control layouts in the group, especially if you frequently change settings. Its added USB-C support also makes it a practical pick for a modern electronics bench.

Precision Encoder Model – 30V 10A Bench Supply with USB-C Charging

If you’re comparing bench power supplies under 100, this 30V 10A unit stands out for its encoder-based control and quick coarse/fine adjustments. It’s built for users who want precise voltage and current setting, a clear 4-digit readout, and simple output control during repair or lab work.

Best For: Electronics hobbyists, repair users, and small lab setups that need precise adjustment plus USB charging.

Pros:

• Encoder knob with coarse and fine tuning makes setting values more precise and convenient.
• Output switch button helps prevent accidental load damage when powering on and off.
• Short-circuit alarm plus overvoltage, overcurrent, overtemperature, and overload protection.
• 4-digit LED display with 0.01V and 0.001A resolution for detailed readings.

Cons:

• Uses a barrel connector output, which may not suit every bench accessory.
• USB and Type-C charging are included, but the main focus is still the DC supply output.

This model is a practical pick if you want stable bench control with safety features and easier knob-based adjustment. It’s especially appealing for users who value detailed readings and a straightforward workflow.

Memory Preset Workhorse – 30V 10A Bench Supply with Key Lock

For buyers searching for bench power supplies under 100, this 30V 10A unit is focused on repair efficiency and repeatable settings. The encoder knob, three memory presets, output switch, and key lock make it a strong fit for routine testing where you want fast recall and fewer setup mistakes.

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

Pros:

• Three memory presets let you save and recall common settings quickly.
• Encoder knob supports digit-by-digit fine tuning for accurate adjustments.
• Output switch, OCP protection, and key lock improve safety during wiring and testing.
• Built-in USB fast charge and clear 4-digit LED display add convenience on the bench.

Cons:

• Test leads included are described as light-duty, so heavy-use projects may need better leads.
• U.S. users must confirm the 115V setting on the back before use.

If you want a bench supply that prioritizes workflow speed, this one has useful shortcuts without giving up basic protection features. It’s best suited to repeatable repair and diagnostic tasks rather than one-off casual use.

Fast-Charge Utility Pick – 30V 10A Bench Supply with Type-C

This option is a solid fit if you want bench power supplies under 100 with modern charging convenience built in. It combines coarse and fine coding knobs, a 4-digit display, OCP short-circuit alerts, and both USB and Type-C charging, making it useful for lab, DIY, and electronics repair tasks.

Best For: Makers, repair users, and teaching or lab environments that need fast charging and simple control.

Pros:

• Coarse and fine coding knobs help speed up voltage and current adjustments.
• USB and Type-C ports include 5V/3.6A fast charging for phones or devices being repaired.
• Automatic short-circuit shutdown and buzzer warning add protection during use.
• Automatic voltage detection supports 110V and 220V inputs without manual switching.

Cons:

• The rear voltage toggle switch has been removed, which may matter to users who prefer manual input selection.
• It is still a 30V/10A supply, so it’s not meant for higher-power work.

Overall, this is a practical all-rounder for users who want quick charging ports alongside a conventional bench power supply. The automatic input detection also removes one setup step, which is helpful in shared or changing workspaces.

How We Picked These Bench Power Supplies Under 100

We focused on models that offer the best mix of output range, adjustment precision, protection features, and usability for the price. For Bench Power Supplies Under 100, the most important basics are clean voltage regulation, enough current for common projects, and controls that make small adjustments easy.

We also favored units with clear displays, output enable switches, encoder knobs, and useful extras such as USB or Type-C ports. These features do not replace solid electrical performance, but they make daily use much more convenient.

Quick Comparison: What Matters Most

Most buyers will choose between 30V 5A units and 30V 10A units. A 5A model is usually enough for small electronics, Arduino projects, sensors, and lightweight troubleshooting. A 10A model gives you more headroom for motors, test loads, battery charging, and larger DIY builds.

Display style matters too. Four-digit and IPS displays are easier to read and generally more precise than basic three-digit layouts. If you expect to make frequent setting changes, look for coarse and fine adjustment controls or an encoder knob for faster setup.

Key Buying Factors for Bench Power Supplies Under 100

Voltage and Current Range

Match the supply to your projects. If most of your work stays below 24V and under 3A, a smaller unit may be fine. If you want room to grow, a 30V 10A bench supply is the safer long-term choice.

Adjustment Controls

Encoder dials, coarse/fine knobs, and output buttons all improve usability. They help prevent overshooting your target voltage and make repeat testing faster.

Protection and Output Control

OCP protection, output switches, and intelligent charging modes are especially useful if you plan to test batteries or sensitive circuits. These features reduce mistakes and add peace of mind.

Display and Connectivity

Clear voltage and current readouts are essential. USB and Type-C charging ports are a bonus, not a requirement, but they can be useful on a crowded bench.

Who Should Buy Which Bench Power Supplies Under 100?

If you are a beginner or mostly work on small electronics, a 30V 5A bench supply is usually enough. If you repair gear, test motors, or want a single supply that can handle more demanding projects, choose a 30V 10A model.

If convenience matters most, prioritize memory presets, output switching, and easy adjustment controls. If accuracy and visibility are your top concerns, go with a model that offers a four-digit display or IPS screen. For most buyers shopping Bench Power Supplies Under 100, the best choice is the one that matches your real workload instead of chasing the highest numbers.