UPS critical power is one of those purchases where the low-priced option and the new-condition option rarely overlap. That is exactly the situation with these two APC units. One is a practical, everyday UPS; the other is a unit built for a structured setup. Since both carry the APC name, the comparison comes down to form factor, capacity, and condition rather than brand differences. The right choice depends on how many devices you need to cover, the space you have, and how much you want to spend.
Quick verdict
If you want to protect several devices without spending much, the APC Back-Ups PRO 1000 is the sensible pick. If you want a more focused UPS for lighter loads, the Smart-UPS SCL500RM1U is the one to choose.
Comparison table
| | APC Back-Ups PRO 1000 BR1000G | APC Smart-UPS Lithium-Ion 500VA SCL500RM1U |
| Price | USD 64.99 | USD 399.00 |
| Relative price | | |
| Condition | Used | New |
| Key details | 8 outlets, battery carrier | 500VA, rack mountable, lithium-ion |
Where each product wins
The Back-Ups PRO 1000 wins on price, with the lower listed number in this comparison. With a gap of $334.01 between the two listed prices, it is the low-commitment route. The Smart-UPS wins on battery technology and form factor, making it the better fit for a structured installation.
Product notes
APC Back-Ups PRO 1000 BR1000G
The APC Back-Ups PRO 1000 BR1000G is the lower-priced option for UPS critical power. It gives you eight outlets and a battery carrier, so you can protect a computer, monitor, router, and other peripherals through a single unit. That is a meaningful advantage if you are tired of plugging everything into one power strip and hoping the battery backup covers it. The unit is sold used, which is the main limitation: you are getting pre-owned hardware rather than a factory-fresh box. For a modest investment, you get a UPS with a practical outlet count. If your goal is maximum outlet coverage at the lowest cost, this is the option to start with.
APC Smart-UPS Lithium-Ion 500VA SCL500RM1U
Need new-condition rack-mountable power? The APC Smart-UPS Lithium-Ion 500VA SCL500RM1U puts a lithium-ion battery in a rack-ready package with a silver finish. It is designed for easy rack mounting, which makes it a clean fit for a server cabinet or network closet. The 500VA maximum output is enough for a computer, server, or a small set of networking devices. The lithium-ion battery is built for long-lasting power backup. The main limitation is capacity: 500VA is modest, so keep the connected load light. You are also paying more for the convenience and new-condition hardware, which is the right trade if you want a brand-new rack-mounted UPS for essential equipment.
Final choice by use case
Choose the Back-Ups PRO 1000 when you want to spend less and have many devices to plug in. Choose the Smart-UPS SCL500RM1U when you need a more specialized form factor for essential equipment.
