UPS critical power comes down to one practical question: when the power flickers or drops, what keeps your equipment running? The four products here span a $150 price spread, forcing a real choice. On one side is a used Vertiv 1500VA rackmount/tower unit; on the other are two Goldenmate desktop UPS systems built around LiFePO4 batteries. The right pick depends on where the unit lives (rack or desk), whether you want lithium battery chemistry, and how much runtime and output flexibility you need.
Quick take
If your gear mounts in a rack and the used condition doesn't bother you, the Libert Vertiv PSI5-1500RT120 is the direct entry point at the lower end of the price range - and there are two entries with that title at the same price. If you want a desktop UPS with LiFePO4 battery and surge protection for a PC, the Goldenmate 1000VA/800W is barely more than the Vertiv. If you want pure sine wave output, a 1500VA/1000W rating, and a stated backup time, the Goldenmate 1500VA/1000W is the one that packs the most into a single box.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| Libert Vertiv PSI5-1500RT120 1500VA Rackmount UPS Battery Backup (Qty 1) | USD 149.99 | |
| Goldenmate UPS 1000VA/800W LiFePO4 Battery Backup UPS Surge Protector for PC | USD 151.99 | |
| Goldenmate 1500VA 1000W Pure Sine Wave UPS Backup Power Supply LiFePO4 Battery | USD 299.99 |
Two entries share the Vertiv title and price, so the table shows that model once.
Decision matrix
| If your priority is... | Choose this unit |
|---|---|
| A 1500VA rackmount/tower unit at the lowest listed price | Libert Vertiv PSI5-1500RT120 |
| A desktop LiFePO4 backup with surge protection near the low end | Goldenmate UPS 1000VA/800W |
| Pure sine wave output, 1500VA/1000W rating, stated backup time | Goldenmate 1500VA/1000W Pure Sine Wave |
Product notes
Libert Vertiv PSI5-1500RT120 1500VA/1350W Rackmount UPS Battery Backup Qty 1 - USD 149.99
Two separate entries carry this exact Vertiv title, both at USD 149.99. The description says these are used units removed from a working environment during an equipment refresh, and that each one powers on, has a working LCD, and passes a built-in self-test with no replace-battery faults. The form factor is rackmount or tower, the output is pure sine wave with automatic voltage regulation, and the voltage compatibility is listed as 1500VA. The catch is the used condition; no battery type or runtime is identified. Choose this when your equipment sits in a rack and you want a 1500VA enterprise-style unit at the low end of the price spread.
Goldenmate UPS 1000VA/800W LiFePO4 Battery Backup UPS Surge Protector for PC - USD 151.99
This is a certified-refurbished Goldenmate desktop UPS with a 1000VA/800W rating and a LiFePO4 battery. The description says it uses EV-grade A LiFePO4 cells and a self-developed battery management system with six protections, and the unit also includes an operating temperature range from -20°C to +60°C plus surge protection and one cooling fan. At USD 151.99, it is just $2 above the Vertiv, but you get lithium chemistry in a white desktop tower aimed at PC protection. If pure sine wave output matters to your equipment, the Vertiv and the 1500VA Goldenmate both list it, so weigh that against the price. For a near-$150 desktop UPS with LiFePO4 battery, this is the balanced choice.
Goldenmate 1500VA 1000W Pure Sine Wave UPS Backup Power Supply LiFePO4 Battery - USD 299.99
This Goldenmate unit sits at the top of the price range at USD 299.99. It pairs a 1500VA/1000W rating with pure sine wave output and LiFePO4 battery chemistry. The product details include a 296Wh battery capacity, a backup time of about 30 minutes at a 500W load, five types of BMS protection, a one-touch mute alarm, and UL, CE, FCC, and RoHS certifications. The description also mentions multiple AC outlets, USB ports, and DC connections, so it can serve several devices at once. The trade-off is the higher listed price and desktop form factor; if you want pure sine wave, LiFePO4, and a stated runtime in one package, this is the pick.
Final call
Decide by form factor first. A rack or tower location points to the Libert Vertiv PSI5-1500RT120, provided you accept a used unit. A desktop setup looking to stay near the lower end of the price range points to the Goldenmate 1000VA/800W, which adds LiFePO4 battery and surge protection for just $2 more than the Vertiv. If you need pure sine wave output, a stated backup time, and a port layout that includes AC, USB, and DC, the Goldenmate 1500VA/1000W is worth the extra $150. All four units fall within a $150 price range, so the deciding factors are condition, form factor, and the backup capabilities described for each.
