Current limiting protects the circuit, and the ripple figure tells the rest · review
HANMATEK HM310, 0 to 30 V, 0 to 10 A review
A 0–30 V, 0–10 A bench supply with four-digit displays for voltage, current and calculated power, a lockable keypad and a front output switch, protected against overcurrent, overheating and overvoltage.
The bottom line A sensible 10 A supply with three protections, a lock and an output switch. Its “low ripple” is a claim without a number, and it does not publish display steps.
The HM310 listing, bullet by bullet
Five bullets: automatic power calculation shown on the large display, four-digit LEDs with automatic decimal point, and a lockable keypad; a front output switch with preset voltage and current up to 10 A; a built-in fan, low arc noise and low ripple, a ground terminal and protection against overcurrent, overheating and overvoltage; uses from production testing to battery charging and teaching; and a box with the supply, output and input cables and a manual.
Low ripple, as a word
“Low ripple” appears without a millivolt figure. Ripple is the residual noise on the output, and for sensitive audio or measurement circuits it is a number to compare. None of the seven supplies here publishes one, and the HM310 is the only one to mention it at all.
A lock on the HANMATEK keypad
A locked keypad keeps a set voltage from being nudged while probes are moved around the bench. It is a small feature that prevents a costly mistake.
Ground terminal
A separate ground terminal lets the supply’s case be tied to the bench ground. The listing names it and does not describe its wiring.
Availability
At the last look-up, the German, French, Italian and Spanish Amazon stores were asking 60 € to 70 €.
The American and British Amazon stores returned no entry, so the buy button there opens a search rather than a missing page.
Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.
Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.
Where it earns its place, and where it falls short
Strengths
Power calculated and displayed alongside voltage and current
A keypad lock against accidental changes and a front output switch
Protection against overcurrent, overheating and overvoltage, and a ground terminal
Compromises
Low ripple is claimed without a figure
No display resolution or setting step given
A USB port visible in the photograph is not described in the listing text
Specifications
Voltage and current range
0–30 V, 0–10 A, title
Channels
Absent from the listing
Linear or switching design
Absent from the listing
Ripple
Absent from the listing as a figure — described as low ripple, third bullet
Display resolution
Absent from the listing as a step — 4-digit LED for voltage, current and power, with automatic decimal point, first bullet
Programmability
Absent from the listing — preset voltage and current with a keypad lock
Protections
Overcurrent, overheating and overvoltage, with a ground terminal, third bullet
Amazon reference
B0854JHRYZ (same reference on 4 Amazon marketplaces)
EAN
0745245799165
Questions makers ask before buying
Can the HANMATEK HM310 keypad be locked?
Yes. The first bullet says the keypad can be locked to avoid accidental operation.
Which protections does the HM310 have?
The third bullet lists protection against overcurrent, overheating and overvoltage, and a ground terminal.
32 V, 10 A · coarse and fine encoders, 0.01 V and 0.001 A setting · output on/off button · OCP · temperature-controlled fan · 20 W USB-A and USB-C · 115/230 V selectable
A 32 V, 10 A bench supply with coarse and fine encoder knobs setting to 0.01 V and 0.001 A, an output on/off button, overcurrent protection and two 20 W USB charging ports.
Best for: A maker bench powering microcontroller boards, single-board computers and motors up to 10 A, where knob-based setting saves time.
0–30 V, 0–10 A · programmable over USB from a PC · 4 memory presets · user-set OVP and OCP · 2.8 in TFT, numeric or curve display · 5 V 1 A USB port · 200–240 V input
A programmable 0–30 V, 0–10 A bench supply controlled from a computer over USB, with four memory presets, user-set overvoltage and overcurrent limits, and a 2.8-inch screen that shows readings as numbers or curves.
Best for: Logging or automating power tests from a computer, such as battery charging runs, at up to 30 V and 10 A.
0–30 V, 0–5 A · 4-digit LED, 0.01 V and 0.001 A · CC/CV switching · output button · OVP, OCP, SCP · short-circuit alarm · 18 W USB fast charging · 1.1 kg
A 0–30 V, 0–5 A bench supply with a four-digit display showing voltage, current and power, automatic CC/CV switching, an output button and a short-circuit alarm, plus an 18 W USB charging port.
Best for: Electronics hobby work up to 30 V and 5 A, where a short-circuit alarm protects the circuit under test.
