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Adjustable DC Power Supply (0-30 V 0-10 A) with Output Enable/Disable Button HANMATEK HM310 Mini Variable Switching Digital Bench Power Supply with USB Charging
HANMATEK

HANMATEK Adjustable DC Power Supply (0-30 V 0-10 A)

Bottom line: The HANMATEK Adjustable DC Power Supply: Output enable button lets you preset voltage and current before the terminals go live; main trade-off: 30 V ceiling rules out higher-voltage tube, industrial, or 48 V rail work.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Output enable button lets you preset voltage and current before the terminals go live
  • ✓ 0-30 V and 0-10 A span covers most bench, repair, and battery-charging work
  • ✓ 4-digit LED shows voltage, current, and auto-calculated power simultaneously
  • ✓ Five protections built in: over-voltage, over-current, over-power, over-temp, short circuit
  • ✓ Front 5 V 2 A USB port charges devices without occupying the main output terminals

Cons

  • ✗ 30 V ceiling rules out higher-voltage tube, industrial, or 48 V rail work
  • ✗ Single output channel, so dual-rail or split-supply testing needs a second unit
  • ✗ Active fan cooling means audible noise in a quiet lab despite the low-arc design
  • ✗ Ripple and regulation figures are not published, so precision analog work needs verification

Manufacturer description

The HANMATEK HM310 is a variable bench power supply that covers 0-30 V and 0-10 A in a footprint small enough to leave on a crowded workbench permanently. A 4-digit LED display shows voltage, current, and calculated power at once, with automatic decimal-point carry so you read the value without mentally shifting units. The feature that earns its keep is the dedicated Output enable/disable button: you dial in the voltage and current you need with the terminals dead, confirm the numbers, then commit power to the circuit. That single step prevents the classic bench mistake of connecting a board…

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SpecPicks Verdict

SpecPicks scored HANMATEK Adjustable DC Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. HANMATEK's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

What voltage and current range does the HANMATEK HM310 cover?

It outputs 0-30 V and 0-10 A, adjustable across the full range, and the display calculates and shows the resulting wattage automatically.

What does the Output button actually do?

It disconnects the terminals while you adjust settings. You dial in the target voltage and current with no power flowing, then press Output to apply it to your circuit - which prevents connecting a device at the previous job's settings.

Can I charge a phone or USB device from it?

Yes. There is a dedicated 5 V 2 A USB charging port on the front panel, separate from the main output terminals.

What protections does it have if I short the output?

The HM310 includes short-circuit protection plus over-voltage, over-current, over-power, and over-temperature protection. A keypad lock is also available to prevent accidental setting changes during a test.

What comes in the box?

The HM310 host unit, an output power cord, an input power cord, and a user manual. Check the product listing for current warranty terms and regional plug type before ordering.

Key Features

  • 【Auto Power Calculation】 - Intelligently calculates output voltage and current into power and displays the value on its large screen.; decimal point automatic carry & LED 4 digits display of voltage function displays.current and powe; The keyboard can be locked to prevent misoperation.
  • 【Output switch control】 - Sometimes we need to switch between different voltage or current outputs, but we often forget to unplug the previous instrument and cause the instrument to burn out.,which often occurs in the maintenance.Output key is designed to solve this problem.By pressing the Output key, the required voltage and current can be adjusted without the actual output power,Which makes this DC power supply more secure and more energy efficient.
  • 【Safe and Reliable to Use】 - Safety is our priority. The built-in fan low arc noise & low ripple,The power supply is durable and compact. Productive work since the power supply comes multiple protection of Over-voltage, over-current, over-power, over-temperature, short-circuit powerful protection function.
  • 【Wide Application】 - Front 5V 2A USB charging interface that can be charge your devices.Applied in production line test, electrical maintenance, aging products, battery charging, laboratories scientific research and teaching and all other need DC regulated power supply.,Nice gift choice for DIY electronics hobbyist.
  • 【Manufacturer's Package】 - 1 * HM310 Power supply host , 1 * Output power cord , 1* Input power cord , 1 * User manual.High quality material adopted and make it more stable output, small volume, light weight, easy to carry and move and easy operation.

Full Specifications

BrandHANMATEK
Wattage300 watts
Model NameHM310
Form FactorCompact
ConnectivityUSB
Model NumberHM310
CompatibilitySwitch
Connector TypeUSB 2.0
Cooling MethodAir
Output Wattage300 Watts
Mfr Part NumberHM310
Number of Items1
Warranty Description12 Months Warranty
Connector Type Used on CableUSB 2.0
Full listing titleAdjustable DC Power Supply (0-30 V 0-10 A) with Output Enable/Disable Button HANMATEK HM310 Mini Variable Switching Digital Bench Power Supply with USB Charging

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Adjustable DC Power Supply (0-30 V 0-10 A) with Output Enable/Disable Button HANMATEK HM310 Mini Variable Switching Digital Bench Power Supply with USB Charging is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Adjustable DC Power Supply (0-30 V 0-10 A) with Output Enable/Disable Button HANMATEK HM310 Mini Variable Switching Digital Bench Power Supply with USB Charging
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