A high-current 30 V switcher for automotive, battery and plating work that needs 20 A without a big bill.
Amazon $142.49The NICE-POWER R-SPS3020 30V 20A rates 3.0 among single output bench power supplys; the NICE-POWER SPS3010-2KD Dual 30V 10A rates 2.9 among multi-output ones. The NICE-POWER R-SPS3020 30V 20A costs $57.50 less ($142.49 vs $199.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

A cheap dual switcher for projects that need two high-current rails, or 60 V or 20 A from one box.
Amazon $199.99Scores side by side
These two sit in different type classes (single output and multi-output), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | NICE-POWER R-SPS3020 30V 20A | NICE-POWER SPS3010-2KD Dual 30V 10A |
|---|---|---|
| Overall rating | 3.0/5 | 2.9/5 |
| Value 25% | 87 $0.24 per watt ($142.49, 600 W rated) | 77 $0.33 per watt ($199.99, 600 W rated) |
| Output quality 20% | 0 ripple and noise not published, scored as the worst | 0 ripple and noise not published, scored as the worst |
| Resolution 15% | 50 10 mV / 1 mA readback resolution | 50 10 mV / 1 mA readback resolution |
| PC control 15% | 50 PC control not published (neutral score used) | 50 PC control not published (neutral score used) |
| Protection & features 10% | 60 over-voltage protection, over-current protection | 50 protection and features not published (neutral score used) |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| NICE-POWER R-SPS3020 30V 20A | NICE-POWER SPS3010-2KD Dual 30V 10A | |
|---|---|---|
| Output | ||
| Type | Power supply | Power supply |
| Regulation | Switching | Switching |
| Channels | 1 | 2 |
| Channel ratings | 30 V/20 A | 30 V/10 A, 30 V/10 A |
| Max voltage | 30 V | 30 V |
| Max current | 20 A | 10 A |
| Rated power | 600 W | 600 W |
| Precision | ||
| Readback resolution | 10 mV / 1 mA | 10 mV / 1 mA |
| Control | ||
| Over-voltage protection | Yes | - |
| Over-current protection | Yes | - |
| Build | ||
| Weight | 6.6 lb | 4.4 lb |