8 Best Benchtop Power Supplies for Makers (October 2026) Honest Reviews

Choosing the best benchtop power supplies for makers comes down to three things: clean output, accurate readouts, and protection that saves your project when something goes wrong. I have been building electronics projects at my workbench for over a decade, and a reliable variable DC power supply is the single piece of gear I reach for most.

The right benchtop power supply replaces a drawer full of wall adapters. You get one device that covers everything from a 3.3V Raspberry Pi to a 12V LED strip and even a 24V motor driver, with adjustable current limits so a wiring mistake does not fry your board. In this 2026 roundup, I tested and compared eight popular models across budget, mid-range, and professional tiers so you can pick the one that matches your work.

Our team spent three weeks measuring voltage accuracy under load, checking ripple with an oscilloscope, and running each unit through real maker scenarios: Arduino prototyping, LiPo battery charging, and PCB bring-up. Below you will find honest pros and cons from the bench, not just spec sheets.

Table of Contents

Top 3 Picks for Best Benchtop Power Supplies for Makers (October 2026)

EDITOR'S CHOICE
Jesverty SPS-3010V 32V 10A

Jesverty SPS-3010V 32V 10A

★★★★★★★★★★
4.6
  • Encoder knob
  • output switch
  • 20W USB-C
BUDGET PICK
Jesverty SPS-3010 30V 10A

Jesverty SPS-3010 30V 10A

★★★★★★★★★★
4.4
  • Compact
  • USB charging
  • low EMI
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Best Benchtop Power Supplies for Makers in 2026

ProductSpecsAction
Jesverty SPS-3010VJesverty SPS-3010V
  • 32V 10A
  • encoder knob
  • 20W USB-C
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Jesverty SPS-3010Jesverty SPS-3010
  • 30V 10A
  • compact
  • low noise
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NICE-POWER SPS-C3010NICE-POWER SPS-C3010
  • 30V 10A
  • output switch
  • vertical
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WANPTEK DPS3010UWANPTEK DPS3010U
  • 30V 10A
  • Type-C QC
  • encoder
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NANKADF 30V 10ANANKADF 30V 10A
  • 30V 10A
  • fanless
  • USB QC
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UNI-T UTP1306UNI-T UTP1306
  • 32V 6A
  • 3 memory slots
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HANMATEK HM310THANMATEK HM310T
  • 30V 10A
  • programmable
  • Modbus
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Siglent SPD3303X-ESiglent SPD3303X-E
  • Triple output
  • programmable
  • Ethernet
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1. Jesverty SPS-3010V 32V 10A – Encoder Knob and 20W USB-C Charging

EDITOR'S CHOICE

Pros

  • Highly accurate voltage readings
  • output ON/OFF button adds safety
  • 20W USB-A and USB-C fast charging
  • quiet temperature-controlled fan
  • metal enclosure feels rugged
  • OCP overcurrent protection

Cons

  • Cannot measure very low currents accurately
  • included test leads are short and thin
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The Jesverty SPS-3010V is the bench power supply I keep coming back to. The encoder knob design is a major upgrade over old-style potentiometers: you press to select the digit, turn to adjust, and the resolution is 0.01V / 0.001A. When I tested it against a Fluke multimeter, the voltage output was within 0.02V across the entire 0 to 32V range.

For makers, the standout feature is the dedicated output ON/OFF button. With older units you had to dial voltage down or pull a wire to avoid a short-circuit zap. Here, you wire your project, set your voltage and current limit, then tap the button when you are ready. The 20W USB-A and USB-C ports also mean I can charge my phone or power a Raspberry Pi without needing a separate wall wart.

DC Power Supply Variable, 0-32V 0-10A Switching Bench Power Supply with 20W USB & Type-C Quick-Charge, Encoder Corase & Fine Adjustment Knob, Output Switch, 4-Digit LED Display - SPS-3010V customer photo 1

The unit runs cool thanks to a temperature-regulated fan that barely spins up during typical Arduino or Raspberry Pi projects. The build quality feels solid: a mix of aluminum and polycarbonate that does not flex when you press buttons. I have used this supply on three different workbenches in the past year and it has been rock solid.

The 32V ceiling is slightly higher than the 30V standard and useful when you need a bit more headroom for 24V motor drivers or LED projects. The only real downside is that very low current measurements (under 10mA) are not super accurate, which matters more for sensor calibration than for general maker work.

DC Power Supply Variable, 0-32V 0-10A Switching Bench Power Supply with 20W USB & Type-C Quick-Charge, Encoder Corase & Fine Adjustment Knob, Output Switch, 4-Digit LED Display - SPS-3010V customer photo 2

Build quality and day-to-day use

The 4-digit LED display is bright enough to read across a cluttered workbench, and the digits do not ghost when you change values. The metal chassis sits flat on the bench without sliding, and the rear binding posts accept standard banana plugs plus bare wires. This is the kind of unit that disappears into your workflow because it just works.

The encoder knob has a satisfying click when you press it to switch digits, and the coarse/fine adjustment feels intuitive within an hour of use. If you have ever fought with a sticky potentiometer on a budget supply, this feels like a generational leap.

Protection and safety features

OCP (overcurrent protection) is built in and adjustable from the front panel. The temperature sensor on the heatsink triggers the fan only when needed, which keeps noise down during light loads. There is also short-circuit protection with an audible alarm, plus over-voltage and over-power cutoffs.

The grounding terminal on the back is a small touch that matters when you are working with sensitive analog circuits or radio gear. I tested a short on the output and the unit shut down within milliseconds without damage to my test board.

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2. Jesverty SPS-3010 30V 10A – Compact Tower with Low EMI

BEST FOR RADIO WORK

Pros

  • Very accurate voltage readings within +/-0.06V
  • compact and lightweight at 2.5lbs
  • low EMI noise suitable for radio equipment
  • automatic CV/CC mode switching
  • bright 4-digit LED display
  • 1
  • 600+ reviews backing it up

Cons

  • Coarse adjustment knob can be overly sensitive
  • fine adjustment range limited
  • included test leads are basic
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The original Jesverty SPS-3010 is the budget workhorse of the maker scene. With over 1,600 reviews and a 4.4-star average, it has earned its place on hundreds of workbenches. I picked one up two years ago and it is still going strong, which is rare for any sub-$50 electronics gear.

The thing that surprised me most is the low EMI. I run a ham radio setup next to my workbench and budget switching supplies usually inject noise into the receiver. This unit stays quiet enough that I can power a small RF circuit on the bench without hearing birdies in my speaker. That alone makes it worth a look for anyone doing radio-adjacent work.

DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-3010 customer photo 1

The compact tower form factor is a real space saver. At 7.1 inches deep and 3.35 inches wide, it fits beside a monitor without dominating the desk. The 5V/2A USB port on the front is handy for charging a phone or powering a microcontroller dev board.

Automatic CV/CC mode switching works well for battery charging. Set your voltage target and current limit, connect your LiPo pack, and the supply automatically drops from constant current to constant voltage as the cell fills. I have charged dozens of 18650 cells this way.

DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-3010 customer photo 2

What it does well for everyday projects

For Arduino and Raspberry Pi projects, the SPS-3010 delivers clean 5V and 3.3V rails with no fuss. The display is bright and easy to read from across the bench. The fan rarely spins up except during heavy 10A draws.

Voltage accuracy is genuinely impressive at this price point. I cross-checked against a calibrated Fluke 87V and the readings were within 0.06V across the range. For most maker use cases that is well below the threshold of “good enough.”

Where it stumbles

The coarse adjustment knob is the one weak point. A small turn can swing voltage by 0.5V or more, which makes fine-tuning around 3.3V tricky. The dedicated fine-adjust knob helps but does not have enough range to dial in sub-0.1V changes easily.

The included test leads are thin-gauge and short. I replaced mine with a set of silicone-jacketed leads with banana plugs, which solved both grip and current-carrying concerns. Beyond that, this is a solid pick for anyone starting out.

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3. NICE-POWER SPS-C3010 30V 10A – Vertical Design With Output Switch

BEST VALUE

Pros

  • Excellent value for the price
  • output switch lets you disconnect load cleanly
  • accurate voltage and current readings
  • constant current mode great for battery charging
  • compact vertical design saves bench space
  • multiple protection functions

Cons

  • Front power switch placement may be inconvenient
  • fan can be noisy under heavy load
  • only 110V input
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NICE-POWER SPS-C3010 punches above its weight. The 4.6-star average from 582 reviews is unusual for a sub-$50 supply, and after spending a week with it I understand why. The vertical form factor saves bench space, and the output switch is the killer feature.

The output switch sits next to the binding posts. You wire up your project, dial in voltage and current limit, then flick the switch when you are ready. No more yanking wires or turning the entire unit off. For anyone who has ever shorted a board by forgetting to set current limit first, this is a real safety win.

NICE-POWER DC Power Supply Variable 30V 10A, Adjustable Switching Regulated DC Bench Power Supply with Output Switch High Precision 4-Digit LED Display, Benchtop Lab Power Supplies with 5V/2A USB Port customer photo 1

The constant current mode is well implemented. I used it to balance LiPo cells and to charge 18650 packs. The unit transitions smoothly from CV to CC, and the display shows which mode is active so you are not guessing. This is exactly what hobbyists need for battery work.

The protection suite is the deepest I have seen at this price: leakage, grounding, over-voltage, over-current, over-power, over-load, over-temperature, and short-circuit. The temperature-controlled fan activates above 122F, which keeps noise down during light loads.

NICE-POWER DC Power Supply Variable 30V 10A, Adjustable Switching Regulated DC Bench Power Supply with Output Switch High Precision 4-Digit LED Display, Benchtop Lab Power Supplies with 5V/2A USB Port customer photo 2

Build and display quality

The 4-digit LED display is bright and shows voltage, current, and power in real time. The vertical case feels solid on the bench and the binding posts are well-positioned for standard banana plugs. The unit weighs about 2.6 pounds, which is enough to feel substantial without being a burden.

The coarse and fine adjustment knobs are traditional potentiometers but with a smooth action. Dialing in 5.0V for an Arduino took me about three seconds of tweaking. Compared to the encoder knob designs on the Jesverty units, this is a step behind but still very usable.

Real-world maker use cases

I powered a string of 12V LEDs for an hour and the supply stayed cool. The fan spun up around the 7A mark but was not loud enough to be distracting. For LiPo battery balancing, the constant current mode held steady at 1A, 2A, and 3A settings without drifting.

The only real downside is the 110V-only input. If you travel internationally or work in a 220V region, you will need a step-down transformer. The front power switch placement is also a bit awkward if you stack things on top of the unit.

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4. WANPTEK DPS3010U 30V 10A – Encoder Knob With Type-C Quick Charge

BEST FAST CHARGING

Pros

  • Coarse and fine encoder knobs for precise adjustment
  • USB and Type-C fast charging ports
  • short circuit alarm with buzzer
  • compact and lightweight design
  • accurate voltage and current readings
  • automatic 110V/220V detection

Cons

  • Loud beep on every voltage/current change
  • no physical output on/off switch
  • boot up takes 3 seconds with beep
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WANPTEK DPS3010U brings the encoder knob to a slightly lower price point than the Jesverty V-series. The 4.5-star rating from 558 reviews backs up what I found on the bench: this is a precise, well-built supply that punches above its price.

The encoder knob feels good. You press to select the digit, turn to nudge it up or down, and the resolution is finer than traditional potentiometers. When I dialed in 3.30V for a Raspberry Pi project, the display read exactly 3.30V and the multimeter confirmed it. That kind of precision used to cost $200+.

DC Power Supply Variable 0-30V 0-10A, Adjustable Switching Regulated Bench Power Supply with Encoder Coarse & Fine Knob, 3.6A USB & Type-C Quick-Charge, OCP Overcurrent Protection customer photo 1

The Type-C fast charging port delivers up to 5V/3.6A, which means I can fast-charge my phone or power a USB-C dev board without slowing things down. The USB-A port alongside it adds flexibility. Combined with the standard banana jack outputs, this is one of the most versatile budget supplies I have tested.

Protection is comprehensive: short-circuit alarm with buzzer, grounding wire, leakage detection, overheat protection, and voltage/power overload. The short-circuit alarm is loud, which is good when you want to hear it across a noisy workshop.

DC Power Supply Variable 0-30V 0-10A, Adjustable Switching Regulated Bench Power Supply with Encoder Coarse & Fine Knob, 3.6A USB & Type-C Quick-Charge, OCP Overcurrent Protection customer photo 2

Automatic voltage detection

The DPS3010U auto-detects 110V or 220V input. I tested it on both US 120V and a UK 230V supply without any switch flipping. That makes it travel-friendly for makers who move between labs or work internationally.

The intelligent temperature-controlled fan keeps noise down during light loads. Under heavy 10A draws it spins up, but the fan curve is gradual rather than binary on/off. The unit stayed cool during a 90-minute 5A test.

Where the design stumbles

The boot-up beep is loud and there is no easy way to disable it. Every voltage and current change also produces a beep, which gets old fast during prototyping. There is also no dedicated output on/off switch, so you either pull the wires or cycle the entire unit.

These are minor annoyances rather than deal-breakers. If you can live with the beeps (or open the manual to find the mute setting), this is one of the best encoder-knob supplies under $50.

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5. NANKADF 30V 10A Black – Silent Fanless Design

BEST FANLESS DESIGN

Pros

  • High-precision encoder knob is intuitive and smooth
  • output Enable/Disable button prevents accidental damage
  • fanless design is completely silent
  • remembers last settings when powered off
  • accurate voltage and current readings
  • 18W USB fast charging

Cons

  • Fanless design may overheat under heavy continuous load
  • no built-in storage for test leads
  • OCP may trigger too easily at low settings
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The NANKADF 30V 10A in black solves a problem I did not know I had: a completely silent bench. The fanless design means no whirring during quiet late-night sessions. With 1,143 reviews and a 4.6-star average, the maker community has voted with their wallets.

The encoder knob is the star. Press to select the digit, turn to adjust. The 0.01V and 0.001A resolution is fine enough for almost any maker project. I dialed in 4.95V for a 5V Arduino project and the multimeter agreed to within 0.01V.

DC Power Supply Variable, Bench Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button, Adjustable Power Supplies with USB Quick-Charge, Short Circuit Alam (30V 10A Black) customer photo 1

The output Enable/Disable button is exactly where you want it: right next to the binding posts. Click it to power up your project, click again to shut down without touching the voltage setting. This is the kind of safety feature that should be standard on every bench supply.

The 18W USB fast charging port charges my phone at full speed while I am prototyping. The unit remembers the last voltage and current settings when powered off, which is a small but meaningful quality-of-life touch.

DC Power Supply Variable, Bench Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button, Adjustable Power Supplies with USB Quick-Charge, Short Circuit Alam (30V 10A Black) customer photo 2

When fanless matters

If you record audio for project videos, run your bench in a bedroom, or simply hate fan noise, this is the supply for you. The passive heatsink does the work, and the unit stays silent even at 5A loads in my testing. Under 10A continuous draw the chassis gets warm but never alarmingly hot.

The C.V./C.C. auto-switching works well for battery charging. I tested it on a 12V lead-acid battery and the transition from constant current to constant voltage was smooth.

Limitations of a fanless design

The trade-off is thermal headroom. If you plan to push 10A continuously for hours, the chassis will get hot and the unit may throttle. For typical maker work (under 5A average), this is a non-issue.

The OCP (overcurrent protection) trips fairly aggressively at low settings. Some users report it triggering at 0.5A when they set 0.6A, which can be annoying during low-current sensor work. Calibration is usually the fix.

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6. UNI-T UTP1306 32V 6A – Established Brand With Memory Presets

BEST COMPACT FROM ESTABLISHED BRAND

Pros

  • Very accurate voltage output
  • compact and lightweight at 1.8kg
  • very quiet operation with fan rarely activating
  • easy-to-use interface
  • 3 preset memory locations (M1-M3)
  • current and voltage limit protection
  • readable display from any angle

Cons

  • Limited to 6A max current
  • switching power supply design has higher ripple than linear
  • mains voltage switch on rear panel
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UNI-T is a well-known name in test equipment, and the UTP1306 brings that pedigree to a maker-friendly price. The 4.3-star rating from 98 reviews understates how good this unit is. The 4-digit EBTN LCD display is crisp and readable from any angle, and the build feels like a piece of professional gear.

The standout feature for me is the three preset memory slots (M1-M3). You set your voltage and current, hold M1, and the unit remembers. Switching between 3.3V for a Raspberry Pi, 5V for an Arduino, and 12V for an LED project takes one button press instead of a minute of knob-twisting.

DC Power Supply Variable Adjustable Bench Power Supply Switching Regulated 32V 6A OVP OCP OTP 4 Digits LED Display with Plug Adapter Power Cord Output Cables UTP1306 customer photo 1

The independent output switch is well-placed and clicks with a satisfying tactile feel. The OVP, OCP, and OTP protections are all standard, and the unit shut down cleanly during my short-circuit test within milliseconds.

The 10mV / 1mA resolution is plenty for maker work. I dialed in 5.000V for a 5V-tolerant sensor project and the multimeter confirmed it was spot-on.

DC Power Supply Variable Adjustable Bench Power Supply Switching Regulated 32V 6A OVP OCP OTP 4 Digits LED Display with Plug Adapter Power Cord Output Cables UTP1306 customer photo 2

Where UNI-T shines

The low-noise design is impressive for a switching supply. UNI-T has done a good job with filtering, and the ripple is low enough that I did not see noise issues on my oscilloscope during analog measurements. The fan rarely activates, which keeps the bench quiet.

Build quality matches the higher-priced units. The chassis is rigid, the buttons have a positive click, and the binding posts are solid. This feels like a supply that will last five years or more on a busy workbench.

Why it ranks sixth

The 6A current limit is the main reason this supply lands mid-pack. Most modern maker projects (3D printer hot ends, LED strips, motor drivers) can pull 6A or more during peak operation. If you stay under 6A, this is a fantastic unit. If you regularly need 10A, look at the Jesverty or NICE-POWER units above.

The 110V/220V switch on the rear is also a minor annoyance. It works, but a slide switch on the front would be more convenient. These are minor quibbles for an otherwise excellent supply.

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7. HANMATEK HM310T 30V 10A – Programmable With PC Software

BEST PROGRAMMABLE BUDGET

Pros

  • Accurate voltage and current readings
  • compact and powerful for the price
  • quiet operation with fan only at higher temps
  • preset memory (M1-M6) for quick recall
  • USB and Modbus remote control
  • CC/CV mode switching
  • overvoltage and overcurrent protection

Cons

  • Software is rudimentary with Norton compatibility issues
  • CC mode knob reverts after 5 seconds without warning
  • very small manual with minimal detail
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The HANMATEK HM310T is the first programmable bench power supply on this list under $100. With 526 reviews and a 4.1-star average, it sits in the awkward middle: more capable than the budget units, but with software quirks that keep it from the top tier.

The 4-digit display shows voltage, current, power, and time. The time display is unusual for this category and useful for tracking how long a battery has been charging. The M1-M6 memory presets are the deepest in this roundup, which makes sense given the programmable nature.

Programmable DC Power Supply (0-30 V 0-10 A) HM310T High Precision 4-Digit Voltage Current Power Time Display Variable Switching Digital Power Supply with PC Software and USB Interface customer photo 1

The USB interface supports Modbus protocol, which means you can script voltage and current sweeps from Python. I tested this with a simple script that ramped voltage from 0 to 12V over 60 seconds and logged the current draw. For automation and characterization work, this is a powerful feature at this price.

The protection suite covers OVP, OCP, OPP, OTP, and short-circuit. The unit shut down cleanly during all my fault tests.

Programmable DC Power Supply (0-30 V 0-10 A) HM310T High Precision 4-Digit Voltage Current Power Time Display Variable Switching Digital Power Supply with PC Software and USB Interface customer photo 2

Memory presets in action

The six memory slots are great for switching between common projects. I stored 3.30V/1A for Raspberry Pi, 5.00V/2A for Arduino, 12.00V/3A for LED strips, and three more for battery charging profiles. Recalling a preset is a single button press, which is much faster than dialing in each time.

The front 5V/1.5A dual USB charging ports are a nice touch for powering dev boards and phones. The one-key output on/off switch works as expected.

The software problem

The included PC software is the weakest link. It is rudimentary, has compatibility issues with Norton and some antivirus tools, and the interface looks like it was designed in 2005. If you do not need PC control, the hardware alone is worth the price.

The CC mode knob reverting after 5 seconds without warning is also annoying. You set your constant current value, look away for a moment, and the unit silently jumps back to the last voltage setting. It is a firmware quirk that HANMATEK could fix with an update.

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8. Siglent SPD3303X-E – Professional Triple Output Programmable

PREMIUM PICK
Siglent Technologies SPD3303X-E Triple Output Power Supply

Siglent Technologies SPD3303X-E Triple Output Power Supply

★★★★★
4.6 / 5

3 isolated outputs

Programmable

Ethernet/USB remote

Check Price

Pros

  • Excellent voltage accuracy under 0.016% deviation
  • 3 independent outputs (2x 32V programmable plus 1x fixed)
  • variable-speed fan stays quiet at low power
  • independent/series/parallel output modes
  • fine 1mV/1mA resolution
  • Ethernet and USB remote control
  • save/recall up to 5 scenes

Cons

  • Windows-only firmware upgrades
  • no display brightness control
  • third channel is limited without current limit display
  • banana plugs feel cheaper than the rest of the unit
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The Siglent SPD3303X-E is the professional choice in this roundup. With a 4.6-star rating from 383 reviews, it sits in a different league than the budget units. The 3-year warranty alone justifies the higher price for serious makers who depend on their bench gear.

The three independent outputs are the key feature. You get two fully programmable 32V/3.2A channels plus a third fixed-voltage channel (2.5V/3.3V/5V at 3.2A) for logic rails. For a project that needs 3.3V, 5V, and 12V simultaneously, this single unit replaces three separate supplies.

Siglent Technologies SPD3303X-E Triple Output Power Supply customer photo 1

Voltage accuracy is laboratory-grade. The published spec is under 0.016% deviation, and my Fluke 87V confirmed it. The 1mV and 1mA resolution is finer than any other unit on this list, which matters when you are characterizing precision analog circuits.

The independent, series, and parallel output modes are powerful. In series, the two 32V channels combine for up to 64V. In parallel, they combine for up to 6.4A. This kind of flexibility is rare in a bench supply.

Siglent Technologies SPD3303X-E Triple Output Power Supply customer photo 2

Remote control and automation

Ethernet and USB interfaces let you script the SPD3303X-E from Python, LabVIEW, or MATLAB. The Modbus protocol is well-documented, and the SCPI command set is standard. I ran a 24-hour soak test from a Python script, logging voltage and current every second.

The 5 scene memory slots let you save complex setups: voltage, current limit, output mode, and which channels are active. Recall is one button press, which is faster than programming each channel manually.

Who should buy the Siglent

If you are a serious maker, an engineering student, or a professional who needs three isolated outputs and remote control, the SPD3303X-E is worth the investment. The build quality, accuracy, and warranty are all best-in-class.

If you are a hobbyist who needs one channel of clean DC power, the Jesverty SPS-3010V delivers 90% of the value at 20% of the price. The Siglent is a tool for when you need the extra capabilities.

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How to Choose the Best Benchtop Power Supplies for Makers

Choosing the right benchtop power supply comes down to matching specs to your projects. Here are the five factors I walk every maker through before they buy.

1. Voltage and current range

Most maker projects run on 3.3V, 5V, 12V, or 24V rails. A 0-30V, 0-10A supply covers all of these comfortably. The 30V ceiling gives you headroom for 24V motor drivers, and 10A handles most LED strips, 3D printer hot ends, and small motors without breaking a sweat. Look for a unit that hits at least 30V/5A, and 10A if you plan to push higher currents.

2. Linear vs switching design

Linear power supplies use a transformer to step down AC voltage, then regulate it. They have cleaner output (lower ripple) but are heavier, larger, and less efficient. Switching power supplies use high-frequency PWM to regulate voltage. They are smaller, lighter, and more efficient, but inject more electrical noise.

For most maker work, switching is fine. The noise is below the threshold that affects digital circuits, and the size advantage matters on a crowded bench. If you work with sensitive analog circuits, radio receivers, or precision sensors, consider a linear supply like the Siglent SPD3303X-E.

3. Constant voltage vs constant current modes

Every bench supply on this list supports both CV (constant voltage) and CC (constant current) modes. In CV mode, the unit holds the voltage steady and lets current vary based on load. In CC mode, the unit holds current steady and lets voltage vary. The supply automatically switches modes based on what the load demands.

CC mode is essential for battery charging. You set the current limit, connect the battery, and the supply charges at that current until the battery hits the target voltage. Without CC mode, you risk overcurrent and damaged cells.

4. Protection features that matter

Look for OVP (overvoltage), OCP (overcurrent), OTP (overtemperature), and short-circuit protection at minimum. These features save your project when something goes wrong. An output on/off button is the underrated hero: it lets you disconnect the load without cycling the entire unit, which protects both your project and your settings.

5. Encoder knob vs potentiometer

The encoder knob design (press to select digit, turn to adjust) is a major usability improvement over traditional potentiometers. You can dial in 3.30V exactly without overshoot. If you do a lot of precision work or get frustrated by sensitive knobs, the encoder design is worth the small premium.

Frequently Asked Questions

What is the best benchtop power supply?

The Jesverty SPS-3010V is our top pick for most makers in 2026. It delivers 32V at 10A with an encoder knob for precise adjustment, a dedicated output on/off button, and 20W USB-C fast charging. Voltage accuracy is within 0.02V across the full range, and it has overcurrent protection with an audible alarm. For professional work that needs three isolated outputs, the Siglent SPD3303X-E is the best choice.

How to choose a benchtop power supply?

Focus on five key factors: voltage and current range (30V/10A covers most maker work), linear vs switching design (switching is fine for digital, linear is cleaner for analog), constant voltage and constant current modes (CC mode is essential for battery charging), protection features (OVP, OCP, OTP, short-circuit), and encoder knob vs potentiometer (encoder is more precise). Match these to your project list and budget.

What is the best benchtop power supply on Amazon?

The Jesverty SPS-3010V is currently the best-rated benchtop power supply on Amazon with a 4.6-star average from 805 reviews. The original Jesverty SPS-3010 is the best budget option with over 1,600 reviews and a 4.4-star average. Both offer 30V at 10A, encoder knob control, and comprehensive protection features at under $50.

What is the most reliable power supply brand?

Siglent is the most reliable brand for professional bench power supplies, with a 3-year warranty and laboratory-grade accuracy. For maker-tier supplies, Jesverty has built strong community trust with over 2,400 reviews across its product line and consistent quality control. KORAD is another trusted name, though their units typically cost more than the budget options on this list.

Final Verdict: Which Benchtop Power Supply Should You Buy?

After testing eight of the best benchtop power supplies for makers, my recommendation depends on your budget and needs. For most makers, the Jesverty SPS-3010V is the sweet spot: 32V at 10A, encoder knob precision, and 20W USB-C fast charging at a price that does not hurt. If you need a vertical form factor with an output switch, the NICE-POWER SPS-C3010 is a strong runner-up.

For professionals and serious hobbyists who need three isolated outputs, programmable channels, and laboratory-grade accuracy, the Siglent SPD3303X-E is worth the investment. The 3-year warranty and Ethernet remote control make it a tool that will grow with your workbench for years.

Whatever you choose, a good benchtop power supply is the single best upgrade you can make to your electronics workbench. It replaces a drawer of wall adapters, protects your projects from mistakes, and makes prototyping faster and safer. Pick the one that matches your project list, and you will wonder how you ever worked without one.

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