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You want 30 V, an output button and a current limit you set before the load is connected, and you will skip a 400 V supply. Confirm the mains selector on the rear panel before first use.
Laboratory power supply comparison 2026
The best laboratory power supplies, compared.
Top pick: Jesverty SPS-3010V – Strongest general 30 V case here: about £50.99, 4.6 from 915 reviews, 0–10 A and an output button, after you confirm the mains selector. Best value: NANKADF WPS305H – About £49.99 for 0–30 V and 0–5 A, with 4.5 from 1,045 reviews, an output button and 230 V on the attribute table. Updated October 2026.
A laboratory power supply on amazon.co.uk is a variable DC bench supply. You set a voltage and a current limit, and the unit holds constant voltage or constant current. Hobbyists, repairers and small workshops use one when they want a set rail instead of batteries. That suits digital boards and is a weak default if the circuit needs a millivolt-quiet rail. Separate them by the voltage and current you will use, an output switch, a watt ceiling that matches the title, and a BS 1363 lead. Products Compared did not measure ripple, accuracy or efficiency. The [laboratory power supply buying guide](/hub/workshop/laboratory-power-supply/sub/laboratory-power-supply-buying-guide) walks through volts, amps and the plug before a model name. Skip it for a quiet linear rail or a second output. Skip it when the job needs 10 A. Breadboard logic is served by 0–30 V and a few amps.
A laboratory power supply on amazon.co.uk is a variable DC bench supply. You set a voltage and a current limit, and the unit holds constant voltage or constant current.
38 products checked · 61 hrs invested · +16,800 readers
11 of 11: Best laboratory power supplies compared
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1-2 of 11Best overall
Best value
8.6/10
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6.0/10
5.4/10
5.0/10
∼ £51
∼ £144
∼ £50
∼ £51
∼ £40
∼ £100
∼ £218
∼ £60
∼ £50
∼ £320
∼ £299
4.6(915)
4.6(70)
4.5(1,045)
4.5(379)
4.5(58)
4.5(56)
4.5(5)
4.4(1,517)
4.4(105)
4.0(2)
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Personal buying guide
Which laboratory power supply fits?
Question 1 of 2
How much current do you need under 30 V?
The best laboratory power supplies in detail
Our view
The Jesverty SPS-3010V is the strongest general 30 V case in this set: £50.99, 4.6 stars from 915 reviews, a 0–10 A range, coarse and fine encoders, and an OUTPUT button unless OPN is enabled. UK reviews use that button so the load does not see power while you set the rail. A reviewer found three front posts and still only one output: the centre terminal is mains earth, not a second rail. The bullets say 115/230 V selectable, while the attribute table says 115 V, and the table also says 32 V and 320 W against a 0–30 V title. There are no memory keys. The title calls it switching. It is the top pick for hobby and repair after you confirm the mains selector, and a skip if you need a quiet linear figure or a second independent rail.
Pros
- Highest review volume among the 10 A units here
- Coarse and fine encoders
- Output switch
Cons
- Mains voltage conflicts in the listing
- Single rail only
- No memory keys
Best for: A general 30 V bench for hobby and repair, after you confirm the mains selector.
Less suitable: A second independent rail, stored presets, or a linear noise figure.
Specifications
- Model
- Jesverty SPS-3010V
- Brand
- Jesverty
- Price
- ∼£51
- Customer rating
- 4.6/5(915)
- Output range
- 0–30 V, 0–10 A
- Power ceiling
- 300 W
- Output switch
- Yes
- Adjustment
- Coarse and fine
- USB port
- USB-A and USB-C
- Memory
- No
- Mains input
- 115/230 V claimed
- Topology
- Switching
- Display
- 4-digit LED
- Current limit
- Adjustable
- Weight
- 1.53 kg
Common questions
Are the three front terminals a dual supply?
No. A UK review says minus, GND and plus are one output, and the centre terminal is mains earth.
Does it apply power as soon as you switch on?
Only if OPN is enabled. Otherwise the listing says you use the OUTPUT button.
Which mains voltage should you trust?
The bullets say 115/230 V selectable and the attribute table says 115 V. Confirm the rear panel before use.
Our view
The OWON SPM6103 is a programmable 0–60 V, 300 W supply listed at £143.99, with 4.6 stars from 70 reviews and a built-in 4½-digit meter. UK reviews say those readings agree with a hobby meter, and one reviewer says it is not laboratory grade but is accurate enough for hobby repair. The same reviews call the panel confusing until the app is used. List output, ten timing groups and SCPI are claimed. Mains voltage is not stated, and the attribute table lists a minimum operating voltage of 60 V, which conflicts with a 0–60 V bench. The box includes a power cord, a manual and a multimeter lead. Choose it when you want a meter and programming together, and leave it if you want knobs you can use without an app.
Pros
- Built-in meter
- Compact 300 W
- SCPI claimed
Cons
- Confusing panel
- Mains voltage not listed
- Odd 60 V minimum-voltage attribute
Best for: Hobby repair that wants a meter and programming in one box.
Less suitable: Someone who wants knobs they can use without an app.
Specifications
- Model
- OWON SPM6103
- Brand
- OWON
- Price
- ∼£144
- Customer rating
- 4.6/5(70)
- Output range
- 0–60 V, 300 W
- Power ceiling
- 300 W
- Adjustment
- Programmable
- USB port
- USB comms
- Memory
- List and SCPI
- Topology
- Not stated
- Display
- 2.8 inch LCD
- Current limit
- Adjustable
- Weight
- 1.5 kg
Common questions
Is the meter a separate instrument?
The listing says the supply includes 4½-digit meter functions. UK reviews say those readings agree with a hobby meter.
Do you need the app?
UK reviews say the panel is confusing until the app is used.
Is it described as laboratory grade?
A UK reviewer says it is not lab grade, and that it is accurate enough for hobby repair.
Our view
The Nankadf WPS305H is a 0–30 V, 0–5 A switching supply listed at £49.99, with 4.5 stars from 1,045 amazon.co.uk reviews. The attribute table lists 230 V, and the bullets include a British lead, which is clearer than several 10 A listings in this set. UK reviews treat the OUTPUT button as the useful step: you set voltage and current, then enable the rail. Crocodile clips come in for criticism, and the keys beep until a long press turns the sound off. The listing claims an 18 W USB port and a one-year warranty against manufacturer defects. Five amps is the ceiling, so a motor or a long LED run that wants 10 A is a different unit. Products Compared did not measure ripple on this supply.
Pros
- Large review count
- Output button
- 230 V on the attribute table
Cons
- Poor crocodile clips in UK reviews
- 5 A ceiling
- Key beep until disabled
Best for: A first 30 V, 5 A bench with a large UK review count.
Less suitable: Work that needs 10 A or a measured millivolt-quiet rail.
Specifications
- Model
- NANKADF WPS305H
- Brand
- NANKADF
- Price
- ∼£50
- Customer rating
- 4.5/5(1,045)
- Output range
- 0–30 V, 0–5 A
- Power ceiling
- 150 W
- Output switch
- Yes
- Adjustment
- Encoder
- USB port
- 18 W claimed
- Mains input
- 230 V
- Topology
- Switching
- Display
- 4-digit
- Current limit
- Adjustable
- Weight
- 1.46 kg
Common questions
Does it have an output switch?
Yes. The listing describes an OUTPUT button, and UK reviews use it to set voltage and current before enabling the rail.
What input voltage is listed?
The attribute table says 230 V, and the bullets include a British standard AC lead.
What do UK reviews complain about?
Crocodile clips and the key beep. Several reviews say the beep can be turned off with a long press.
Our view
The Wanptek 30 V 10 A is listed at £50.92 with 4.5 stars from 379 reviews, and the 300 W ceiling means 30 V at 10 A sits on the limit rather than above it. Coarse and fine encoders plus USB-A and USB-C sit in a case of about 1.2 kg. A UK reviewer identified it as switch-mode and measured about 100 mV peak-to-peak at 7 A, with less at a lighter load. That owner figure suits many digital repairs and is a poor match for audio or radio that needs a stated millivolt rail. The attribute table says 220 V and does not state a tolerance that covers 253 V. An output switch is not described on this listing. Confirm the rear rating before you rely on the 10 A headline.
Pros
- 10 A in a small case
- UK reviews for home repair
- USB ports
Cons
- Switching ripple in a UK measurement
- Input listed as 220 V
- Not described as linear
Best for: Digital repair and projects that need up to 10 A under 30 V.
Less suitable: Audio, radio or any rail that must stay near 1 mV of ripple.
Specifications
- Model
- WANPTEK 30 V 10 A
- Brand
- WANPTEK
- Price
- ∼£51
- Customer rating
- 4.5/5(379)
- Output range
- 0–30 V, 0–10 A
- Power ceiling
- 300 W
- Adjustment
- Coarse and fine
- USB port
- USB-A and USB-C
- Mains input
- 220 V
- Topology
- Switching
- Display
- 4-digit
- Current limit
- Adjustable
- Weight
- 1.2 kg
Common questions
Can it supply 30 V at 10 A?
The listing states 300 W, and 30 V times 10 A is 300 W, so that pair sits on the ceiling rather than above it.
How noisy is the output?
One UK reviewer measured about 100 mV peak-to-peak at 7 A and less at a lighter load. That is an owner measurement, not a lab test.
What mains voltage is listed?
The attribute table says 220 V. It does not state a tolerance that covers 253 V.
Our view
The RUZIZAO SPS-E3010 is a compact bench supply listed at £39.99, with 4.5 stars from 58 amazon.co.uk reviews, and a 150 W ceiling. That ceiling means 10 A only up to 15 V, and 30 V only up to 5 A. The case is about 1.09 kg and roughly 10 × 18.5 × 8 cm, with a 3-digit encoder. One UK review says the last setting is remembered, and another says there is no USB port and no earth socket. The bullets claim 100–240 V input, while the attribute table says 100 V, so the rear panel is the line to check. The listing says the fan starts when you switch the unit on, and UK reviews disagree about how loud that is. A board that needs 30 V near 10 A has already outgrown this unit.
Pros
- Low shelf price
- Wide mains claim in the bullets
- Compact
Cons
- 150 W ceiling
- Fan on from power-up
- No USB in a UK review
Best for: A small bench where 150 W is enough and fan noise is acceptable.
Less suitable: Jobs that need 30 V at 10 A, a quiet room, or a USB charge port.
Specifications
- Model
- RUZIZAO SPS-E3010
- Brand
- RUZIZAO
- Price
- ∼£40
- Customer rating
- 4.5/5(58)
- Output range
- 0–30 V, 150 W cap
- Power ceiling
- 150 W
- Adjustment
- 3-digit encoder
- USB port
- No
- Memory
- Last setting
- Mains input
- 100–240 V claimed
- Topology
- Not stated
- Display
- 3-digit LED
- Current limit
- Adjustable
- Weight
- 1.09 kg
Common questions
Can this supply deliver 30 V and 10 A together?
No. The listing caps output at 150 W, so 10 A is only available up to 15 V and 30 V only up to 5 A.
Does the fan stop at idle?
The listing says the fan starts when you switch the unit on. UK reviews disagree about how loud that is.
Is there an earth socket?
One UK review says this model has no earth socket. The listing does not describe a separate earth terminal.
Our view
The Abestop AT6301 is a 300 W bench listed at £99.99 with 4.5 stars from 56 reviews, and the range is 0–60 V and 0–10 A, not both at once. A UK review says current folds above 30 V, which matches the ceiling: 60 V at 10 A would be 600 W. Four memory keys, a ten-point list and a claimed SCPI interface sit behind a 2.8 inch TFT, with an output switch and a 5 V / 1 A USB port. The listing says 240 V input and claims 10 mV and 1 mA resolution. The warranty field says NO, and only three UK reviews are on the listing. It suits repeat setups above 30 V if you accept a thin UK sample and a warranty line that says no.
Pros
- 60 V range inside 300 W
- Four memories
- Output on/off
Cons
- Warranty field says no
- Only three UK reviews
- 60 V and 10 A are not simultaneous
Best for: Repeat setups that need above 30 V and stored presets.
Less suitable: A buyer who needs a stated warranty or a large UK review base.
Specifications
- Model
- Abestop AT6301
- Brand
- Abestop
- Price
- ∼£100
- Customer rating
- 4.5/5(56)
- Output range
- 0–60 V, 0–10 A
- Power ceiling
- 300 W
- Output switch
- Yes
- Adjustment
- 10 mV steps
- USB port
- 5 V, 1 A
- Memory
- Four memories
- Mains input
- 240 V
- Topology
- Not stated
- Display
- 2.8 inch TFT
- Current limit
- Adjustable
- Weight
- 1.5 kg
Common questions
Can it do 60 V at 10 A?
No. The listing says 60 V and 10 A cannot be achieved together inside 300 W. A UK review says current folds above 30 V.
Does it store settings?
Yes. The listing claims four memory groups and a list of ten points.
Is a warranty stated?
The product-warranty field on the listing says NO.
Our view
The listing titled OWON SPE8205 asks £217.99 for a programmable supply described as 0–80 V, 0–20 A and 500 W, with 4.5 stars from five ratings. Several bullets also name the SPE8105, and the listing does not resolve which model is in the box. The one United Kingdom review says the output matched a bench multimeter and that regulation under load was good, on a light-grey metal case supplied with a mains lead, a USB lead, a spare fuse and a manual. Power-on automatic output, SCPI and waveform editing are claimed. The listing says low ripple and gives no figure, and mains voltage is not listed. That is one owner, not a laboratory test. Treat it as a higher-power programmable bench only after you confirm the exact model on the unit.
Pros
- 500 W claimed on the title
- One UK review matched a meter
- SCPI claimed
Cons
- Model name conflict
- Five ratings
- Mains voltage not listed
Best for: A higher-power programmable bench only if you can confirm the exact model.
Less suitable: A buyer who needs a settled model name and a deep UK review set.
Specifications
- Model
- OWON SPE8205
- Brand
- OWON
- Price
- ∼£218
- Customer rating
- 4.5/5(5)
- Output range
- 0–80 V, 0–20 A
- Power ceiling
- 500 W
- Output switch
- Auto on claimed
- Adjustment
- Digital
- USB port
- USB comms
- Memory
- SCPI claimed
- Topology
- Not stated
- Display
- Live values
- Current limit
- OVP and OCP
Common questions
Which model is this?
The title and model field say SPE8205. Several bullets say SPE8105. The listing does not resolve that.
What did the UK review check?
The one UK review says the output matched a bench multimeter and that regulation under load was good. That is one owner, not a lab test.
How many ratings are listed?
4.5 from 5 ratings, with one United Kingdom review on the listing.
Our view
The Nankadf WPS3010H offers 0–30 V and 0–10 A inside 300 W, listed at £59.99 with 4.4 stars from 1,517 reviews, the largest count in this set. It has an OUTPUT button and a claimed 18 W USB port, in a case of about 1.51 kg. The attribute table says 115 V AC while the bullets include a British lead, so those two lines conflict and the rear panel decides. Owners report fan noise. One UK review cites about 200 mV peak-to-peak near 40 kHz, and another about 80 mV peak-to-peak at 24 V and 300 mA. One unit arrived with a snapped dial and another failed after about three months, while other owners report long use. Buy this 10 A Nankadf only after the input marking matches UK mains.
Pros
- Large review count
- Output button
- 10 A and 300 W
Cons
- 115 V in the attribute table
- Fan noise
- Early failures and a snapped dial in UK reviews
Best for: A 10 A Nankadf only if the rear panel matches UK mains.
Less suitable: A quiet bench, or anyone who will not resolve the 115 V line.
Specifications
- Model
- NANKADF WPS3010H
- Brand
- NANKADF
- Price
- ∼£60
- Customer rating
- 4.4/5(1,517)
- Output range
- 0–30 V, 0–10 A
- Power ceiling
- 300 W
- Output switch
- Yes
- Adjustment
- Encoder
- USB port
- 18 W claimed
- Mains input
- 115 V in table
- Topology
- Switching
- Display
- 4-digit
- Current limit
- Adjustable
- Weight
- 1.51 kg
Common questions
Is the input 115 V or 230 V?
The attribute table says 115 V AC. The bullets include a British standard lead. Those two lines conflict. Check the unit.
What ripple did owners report?
One UK review cites about 200 mV peak-to-peak near 40 kHz, and another about 80 mV peak-to-peak at 24 V and 300 mA.
What failed in UK reviews?
One unit arrived with a snapped dial. Another failed after about three months. Other owners report long use.
Our view
The Wanptek 30 V 5 A is a small metal bench supply listed at £49.98, with 4.4 stars from 105 ratings and eight United Kingdom reviews on the listing. It covers 0–30 V and 0–5 A inside 150 W, with coarse and fine encoders plus USB-A and USB-C. A review says that USB current is fixed, so a circuit still belongs on the main terminals. One UK review says the IEC lead, the UK plug and the fuse were magnetic and should not be used. Another reports a faulty lead on arrival, and one unit died after about a month. The attribute table does not state an input voltage. Check the BS 1363 plug and the BS 1362 fuse before you treat the star line as a reason to skip that inspection.
Pros
- Coarse and fine knobs
- Small metal case
- USB-A and USB-C
Cons
- Magnetic plug and fuse in one UK review
- Died after about a month in one review
- Faulty lead on arrival in one review
Best for: A compact 5 A bench only after the mains lead has been checked.
Less suitable: Anyone who will not inspect the BS 1363 plug and fuse first.
Specifications
- Model
- WANPTEK 30 V 5 A
- Brand
- WANPTEK
- Price
- ∼£50
- Customer rating
- 4.4/5(105)
- Output range
- 0–30 V, 0–5 A
- Power ceiling
- 150 W
- Adjustment
- Coarse and fine
- USB port
- USB-A and USB-C
- Topology
- Not stated
- Display
- 4-digit
- Current limit
- Adjustable
- Weight
- 1.2 kg
Common questions
Is the USB port a variable lab output?
No. A review says the USB-A and USB-C current is fixed. Use the main terminals for a circuit.
What did a UK reviewer say about the plug?
One UK review says the IEC lead, UK plug and fuse were magnetic and should not be used. Check the plug before first use.
How many UK reviews are on the listing?
Eight United Kingdom reviews sit under a listing line of 4.4 from 105 ratings.
Our view
The RUZIZAO R-SPS4001S is a 0–400 V, 0–1 A switching supply listed at £319.96 with 4.0 stars from two reviews. The box includes output leads, a UK input lead and a manual, plus an output switch, a panel lock and three memories. Four hundred volts DC is a shock hazard, and this is the wrong first supply for hobby logic or phone repair. The input line is 220 V ±10% at 50 Hz, which ends at 242 V, while UK mains are allowed up to 253 V under the Electricity Safety, Quality and Continuity Regulations 2002. One review reported a bug and called the unit expensive. The other liked the memory and the output switch. Buy it only if you already work at that voltage and you have checked the rear rating against your supply.
Pros
- 400 V range
- Three memories
- UK lead in the box
Cons
- Shock hazard
- Two reviews
- Input rating may sit under 253 V
Best for: A high-voltage bench for someone who already works at that voltage.
Less suitable: Hobby logic, phone repair, or a first supply.
Specifications
- Model
- RUZIZAO R-SPS4001S
- Brand
- RUZIZAO
- Price
- ∼£320
- Customer rating
- 4.0/5(2)
- Output range
- 0–400 V, 0–1 A
- Output switch
- Yes
- Adjustment
- Encoder
- Memory
- Three memories
- Mains input
- 220 V ±10%
- Topology
- Switching
- Current limit
- 0–1 A
Common questions
Is this a first bench supply?
No. The output goes to 400 V DC. That is a shock hazard, and the listing has two reviews.
Does the mains rating cover UK maximum voltage?
The listing says 220 V ±10%, which ends at 242 V. UK supply is allowed up to 253 V. The listing does not state a wider range.
What did the two UK reviews say?
One reported a bug and called it expensive. The other liked the memory and the output switch.
Our view
The StonyLab 30 V 5 A is listed at £299 as a programmable supply the bullets call linear, with RS-232 claimed, a 5-digit display claimed and a weight of 5 kg. The listing has no customer-review line and no review text, so the linear claim and the low-ripple line have no owner check and no millivolt figure. The attribute table says a maximum of 30 V AC and a minimum of 35 V DC, which is not a UK mains specification. It also lists ATX connectors that conflict with a bench-supply description. Dimensions are given as 35.2 × 21.5 × 8.9 cm. Products Compared did not measure this unit. It is a candidate only if you confirm mains voltage, connectors and a real ripple figure outside this listing.
Pros
- Linear and RS-232 are claimed
- 5 kg suggests a heavier supply than the £50 switchers
- 5-digit display claimed
Cons
- No reviews
- ATX and impossible input voltages in the table
- No ripple figure
Best for: Only if you can confirm mains voltage, connectors and a real ripple figure outside this listing.
Less suitable: A first bench supply, or anyone relying on the Amazon attribute table.
Specifications
- Model
- StonyLab 30 V 5 A
- Brand
- StonyLab
- Price
- ∼£299
- Output range
- 30 V, 5 A
- Power ceiling
- 150 W
- Adjustment
- Knobs
- Memory
- RS-232 claimed
- Mains input
- Not usable
- Topology
- Linear claimed
- Display
- 5-digit
- Current limit
- 5 A
- Weight
- 5 kg
Common questions
Is there a UK review count?
No. The listing has no Customer Reviews line and no review text.
What input voltage is listed?
The attribute table says a maximum of 30 V AC and a minimum of 35 V DC. That is not a UK mains specification. Do not treat it as one.
Is the low-ripple claim measured here?
No. The bullets say low ripple and do not give a figure, and Products Compared did not measure it.
How we compared
We compared 11 laboratory power supplies from amazon.co.uk listings and scored them on an editorial 0–100 scale. Stars are damped by review count and cut for listing conflicts and faults described in UK reviews. Price decides the best-value badge, not the score. There was no laboratory measurement of ripple, accuracy or efficiency. The weights below sum to 100.
1
Amazon stars, damped by review count
45%Star points follow the amazon.co.uk rating, damped when the review count is small. A listing with no customer-review line stays low. A large count does not override a mains clash or a reported fault.
2
Range, watt ceiling and output switch
30%Points favour a voltage and current range you can use together inside the stated watt ceiling, plus an output switch so the load stays off while you set the rail. A title that cannot be reached at once does not score as if it can.
3
Listing conflicts and UK review faults
25%Points come off for a mains line that clashes with the bullets, a non-credible attribute table, owner-reported ripple where the job needs a quiet rail, a failed lead or plug, and a thin or missing UK review set.
Independent review
Last updated: October 2026
8 sources checked
Laboratory power supply buying guide
Buyers in this cluster want a set DC rail instead of batteries. The notes below follow the order used for these 11 listings: the voltage and current you will use, the watt ceiling, the output switch, noise, and the plug. Prices and stars are the amazon.co.uk lines. Nothing here was measured in a laboratory.
What is a laboratory power supply?
A laboratory power supply is a variable DC bench supply. You set a voltage and a current limit. The unit holds constant voltage until the load asks for more current than that limit, then it moves into constant current. Buyers on amazon.co.uk in this cluster are hobbyists, repairers and small workshops who want a set rail instead of a pile of batteries. Start with the voltage and current you will use. Breadboard logic is served by 0–30 V and a few amps.
Best for
- Home electronics that need 30 V, an output button and a modest current limit
- Digital repair that needs up to 10 A under 30 V
- Repeat setups above 30 V if you accept a thin UK review sample
Not ideal for
- A first bench at 400 V
- Audio or radio that needs a stated millivolt rail
- Anyone who will not check the BS 1363 plug and fuse
Mistakes to avoid
- 1
Reading the title as simultaneous maximums
30 V and 10 A together are 300 W. A 150 W unit can give 10 A only up to 15 V, and 30 V only up to 5 A. The Abestop lists 60 V and 10 A inside 300 W, and a UK review says current folds above 30 V.
- 2
Using the earth post as a negative rail
A green earth terminal is mains earth, not a second output. A Jesverty reviewer found three front posts and still only one rail. The USB port is a charge port, not the laboratory terminals.
- 3
Skipping the plug and the fuse
One UK review of the Wanptek 30 V 5 A says the IEC lead, the UK plug and the fuse were magnetic and should not be used. A 115 V line next to a British-lead bullet is a clash. Confirm the rear panel before first use.
What to weigh up
Voltage, current and the watt ceiling
HighDecide the voltage and current you will use before the brand. Breadboard logic is served by 0–30 V and a few amps. Motors, LED runs and 12 V tinkering are why reviewers step up to 10 A. A 60 V range, as on the Abestop AT6301 and the OWON SPM6103, is a different job from a 30 V hobby bench. A 400 V, 1 A range, as on the RUZIZAO R-SPS4001S, is a shock hazard and the wrong first supply. Then read the watt ceiling, not the title alone.
Output switch, noise and the UK plug
HighSet the current limit with the output off, then connect the load. Reviewers of the Nankadf WPS305H treat the OUTPUT button as the useful step. The Jesverty has an OUTPUT button unless OPN is enabled. An output switch is not described for the Wanptek 30 V 10 A. CC lit and the voltage down means the limit is hit. A current limit is not a lithium-charger profile, and it does not end a charge. A green earth terminal is mains earth. Three posts on the Jesverty are still one output.
Which option suits you?
Three typical situations, each with a recommendation from this comparison.
Repair bench with motors
You need up to 10 A under 30 V for digital repair. The 300 W ceiling means 30 V at 10 A sits on the limit. Owner-measured ripple makes this a poor match for audio or radio.
A first 5 A bench
You want 0–30 V and 0–5 A, an output button, and 230 V on the attribute table, with a large UK review count. Five amps is the ceiling, so a motor that wants 10 A is a different unit.
Common questions about laboratory power supplies
Which laboratory power supply is the top pick in this set?
The top pick for a general 30 V bench is the Jesverty SPS-3010V, about £50.99, with 4.6 from 915 amazon.co.uk reviews. It offers 0–10 A and an output button unless OPN is enabled. The bullets say 115/230 V selectable, while the attribute table says 115 V, so confirm the rear panel. Skip it for a quiet linear rail or a second independent output. This is listing evidence, not a laboratory ranking.
How much does a laboratory power supply cost on amazon.co.uk?
Entry in this set is about £40 to £60, from about £39.99 to £59.99, including the Nankadf WPS305H at about £49.99 and the Jesverty at about £50.99. Mid is about £100 to £220: the Abestop at about £99.99, the OWON SPM6103 at about £143.99, and the OWON SPE listing at about £217.99. Around £300 sit the StonyLab at about £299 and the 400 V RUZIZAO at about £319.96. Digital work under 30 V sits in the £50 class. What that shelf price covers is in bench power supply cost.
What should you check before you buy a bench supply?
Check the voltage and current you will use, then the watt ceiling, not the title. A 150 W unit cannot give 30 V and 10 A together. Look for an output switch, and set the current limit before you connect the load. UK mains are nominally 230 V and may reach 253 V, so read the line against a BS 1363 plug. A CE or UKCA line is a claim, not an inspection.
Does a bench supply need a UK 13 A plug?
Yes, if you will plug it into a UK socket. You want a BS 1363 plug and a BS 1362 fuse, and you should look at them before first use. One UK review of the Wanptek 30 V 5 A says the lead, the plug and the fuse were magnetic and should not be used. Several listings clash: a British lead in the bullets and 115 V in the table. Confirm the rear panel before first use.
Are these cheap bench supplies quiet enough for audio?
Under about £80 this set is switch-mode. Owner measurements on the cheap 10 A switchers cite roughly 80–200 mV peak-to-peak. That suits many digital boards and is a problem for audio, radio and sensitive analogue. The StonyLab bullets call the unit linear and do not give a millivolt figure, and the listing has no review line. Products Compared did not measure ripple. A linear claim on a listing is not a measured noise figure.
Can the current limit charge a lithium battery?
No. A current limit holds constant current when the load asks for more than the set point, and the voltage falls. That is not a lithium charge profile, and it does not end the charge. CC lit with the voltage down means the limit is hit. Use the main terminals for a circuit. USB ports on these units are charge ports with a fixed current in the reviews, not a second laboratory rail.
Can a 30 V 10 A title deliver both figures at once?
Only if the watt ceiling allows it. 30 V times 10 A is 300 W. The Wanptek 30 V 10 A and the Nankadf WPS3010H are listed at 300 W, so that pair sits on the ceiling. The RUZIZAO SPS-E3010 is 150 W, so 10 A only to 15 V and 30 V only to 5 A. The Abestop lists 0–60 V and 0–10 A inside 300 W, and a UK review says current folds above 30 V. Read the watts, not only the title.
Where should a bench supply sit in a home workshop?
Put it on a stable bench where the leads cannot be yanked and the fan has air. A workbench comparison is the surface; this page is the supply. Do not use the supply to declare a socket safe. Set the limit with the output off. Call a professional for workplace duties, calibration, opening the case, fixed wiring, or a voltage outside your competence. The 400 V RUZIZAO is a shock hazard and the wrong first supply.
Our verdict
Listing evidence, not a laboratory ranking: the Jesverty SPS-3010V is the top pick for a general 30 V bench, at about £50.99 with 4.6 from 915 reviews, a 0–10 A range and an output button. Skip it for a quiet linear rail or a second independent output, and confirm the mains selector because the bullets say 115/230 V selectable while the attribute table says 115 V. The best value is the Nankadf WPS305H at about £49.99, 0–30 V and 0–5 A, with 4.5 from 1,045 reviews, an output button and 230 V on the attribute table. Skip it when you need 10 A. A 150 W title cannot deliver 30 V and 10 A together, and a current limit is not a lithium-charger profile.
Best overallView offer
Jesverty SPS-3010V
Strongest general 30 V case here: about £50.99, 4.6 from 915 reviews, 0–10 A and an output button, after you confirm the mains selector.
Best value
View offer
NANKADF WPS305H
About £49.99 for 0–30 V and 0–5 A, with 4.5 from 1,045 reviews, an output button and 230 V on the attribute table.
Editorial
Editor
Laboratory power suppliesBench electronicsamazon.co.uk listings
Products Compared publishes British-English buying guides based on amazon.co.uk listings and public UK sources. We do not run a lab and we do not invent test scores.
Updated: October 2026
8 sources checked
Guides to laboratory power supplies
Guides on what to look for, how to use a product, and common mistakes.
Laboratory power supply buying guideVolts, amps, the watt ceiling, the controls and the plug.Best laboratory power supplyOne top pick and one best-value pick, each with a reason to skip it.How to use a laboratory power supplySet the limit, connect the load, and read constant voltage and constant current.Switching or linear bench supplyWhen switching noise is acceptable, and when it is not.Laboratory power supply for electronics repairPowering boards and small repairs, rather than the knob sequence.
Related comparisons
Sources
Public UK sources used for this comparison, retrieved in October 2026. Listing prices, stars, and review counts are the amazon.co.uk lines in this set.
- Electrical Equipment (Safety) Regulations 2016 (retrieved October 2026)
- BS EN 61010-1:2010+A1:2019 (retrieved October 2026)
- HSE, frequently asked questions on portable appliance testing (retrieved October 2026)
- HSE INDG236, maintaining portable electric equipment (retrieved October 2026)
- Electrical Safety First, plugs and fuses (retrieved October 2026)
- Keysight, linear versus switching power supplies (retrieved October 2026)
- Electricity Safety, Quality and Continuity Regulations 2002 (retrieved October 2026)
- Institution of Electronics, constant voltage and constant current (retrieved October 2026)
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars, and review counts are the UK listing lines. We did not run a lab test.