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APC (part of Schneider Electric) and CyberPower are the two names most people see when they shop for a UPS in North America. Both sell everything from small standby units for a router to online double-conversion units for server racks, and at every tier the two catalogs line up closely. That makes "APC or CyberPower?" a less useful question than "which family from each brand fits my job, and how do those two specific models differ?"
This comparison works at the family level. It does not rank one brand above the other, because there is no sound public data to do that for comparable models. Specs, names and terms change, so verify every point against current spec sheets.
Family matchups
| Tier | APC family | CyberPower family | Topology | Waveform on battery |
|---|---|---|---|---|
| Entry, small loads | Back-UPS (BE, BX series) | Standby and AVR series (including CP...AVRLCD) | Standby or line-interactive | Usually simulated sine |
| Home office and gaming | Back-UPS Pro (BR series) | PFC Sinewave (CP...PFCLCD) | Line-interactive | Pure sine on PFC Sinewave; varies by Back-UPS Pro model |
| Small business, rack and tower | Smart-UPS (SMT, SMX, SMC and successors) | Smart App line-interactive, OR rackmount | Line-interactive | Pure sine on most current models |
| Online double conversion | Smart-UPS SRT | OL series (Smart App Online) | Online | Pure sine, no transfer time |
Both brands also sell larger three-phase and specialty products, and small DC units for modems and routers; those are outside this comparison. For deeper background on each lineup, see the APC lineup guide and the CyberPower lineup guide.
Tier by tier
Entry: Back-UPS vs CyberPower Standby/AVR
These units protect a router, a modem, a small desktop or a TV for a few minutes. Most use a simulated (stepped) sine wave on battery, which is fine for many small loads but can trouble some active-PFC power supplies at higher loads. Both brands offer AVR in many entry models, which corrects moderate sags without touching the battery. The practical differentiators are outlet layout (how many battery outlets versus surge-only, and spacing for adapters), the presence of USB for shutdown, and whether the battery is user-replaceable.
Bottom line
At the entry tier, pick by outlet layout, user-replaceable battery and USB support. Brand matters less than whether the unit's watt rating covers your measured load with headroom.
Home office and gaming: Back-UPS Pro vs PFC Sinewave
This is the most cross-shopped matchup. CyberPower's PFC Sinewave line is built around pure sine output on battery, which is what modern active-PFC power supplies prefer. APC's Back-UPS Pro family has included both simulated sine and sine wave models over time, so a Back-UPS Pro is not automatically pure sine. Read the waveform line on the spec sheet. Both lines typically include an LCD, AVR, USB for shutdown and a mix of battery and surge-only outlets.
Bottom line
For a gaming PC or workstation with an active-PFC power supply, choose a pure sine model from either brand and compare watt ratings. If two candidates are both pure sine and similarly rated, let battery replacement cost and software preference decide.
Small business: Smart-UPS vs Smart App and OR
APC Smart-UPS is long established in IT closets, and many admins already run its network management cards and PowerChute tools. CyberPower's Smart App line-interactive models and OR rackmount units cover the same ground: pure sine output on most current models, rack/tower options, LCD displays, and slots for network cards on many models. Differences show up in management card features, rack depth and height options, outlet types (NEMA vs IEC), and extended runtime support. See rack vs tower UPS.
Bottom line
If your organization already standardizes on one ecosystem (cards, monitoring, spare batteries), staying with it usually saves more than any spec difference. For a new closet, compare watt rating, runtime at your load, rack depth and network card features model by model.
Online: SRT vs OL
Both are online double-conversion families with pure sine output, no transfer time, rack/tower convertible chassis on many models, and extended-runtime options. Choose online when you have a power-quality reason: unstable utility power, generator use, or loads that cannot tolerate any transfer. Expect fan noise and higher idle losses than line-interactive units. See line-interactive vs online UPS.
Bottom line
SRT and OL are functionally comparable at the family level. Compare efficiency modes, input plug requirements, battery pack compatibility and noise for the specific sizes you need.
Software and monitoring
APC's software is PowerChute (with different editions for consumer units and for business or network use), and CyberPower's is PowerPanel (with personal and business editions). Both offer automatic shutdown, event logs and configuration of alarms and sensitivity. Editions, supported operating systems and licensing change over time; our PowerChute and PowerPanel guide covers both.
For homelabs and NAS boxes, Network UPS Tools matters more than either vendor tool. Most USB models from both brands present as HID power devices and are handled by the usbhid-ups driver, but how many variables are exposed (runtime, load, battery voltage, self-test control) varies by model and firmware. Check the NUT hardware list for your exact model. Older APC models can also be monitored with apcupsd.
For networked management, both brands sell network management cards for slot-equipped models, offering web interfaces, SNMP and coordinated multi-host shutdown. See network management cards and SNMP.
Battery replacement ecosystem
This is a real, practical difference. APC commonly sells replacement batteries as RBC cartridges: one or more standard sealed lead-acid batteries pre-wired with connectors and sometimes a tray, identified by an RBC number. That makes ordering simple, and third parties sell compatible cartridges and bare batteries. Many CyberPower consumer and small business units use standard-sized batteries that are easy to source from several manufacturers, with CyberPower also selling its own replacement packs. Both brands have models where the battery is not user-serviceable or is a proprietary pack.
Before you buy, look up the replacement battery for the exact model and check its availability and terminal type. See UPS battery sizes and terminals and OEM vs aftermarket UPS batteries.
Our rule of thumb: compare the five-year cost, not the box price
A UPS bought for home or office use will typically need at least one battery replacement in its service life. Add the expected replacement battery cost to the purchase price, then compare. A unit that costs a little more but uses a widely available standard battery can be cheaper to own, and a unit with an easy cartridge swap can be cheaper in your time. The comparison only works with real current prices for the exact parts.
Warranty structure
Both brands typically offer a unit warranty, battery coverage that may differ from the unit term, and a connected-equipment guarantee with an advertised maximum. Terms differ by product family and region, and both brands have revised them over time. Conditions such as registration, original purchaser, direct connection and grounded outlets are common to both. Read UPS warranties and equipment guarantees, then compare the current documents for the two models on your shortlist.
Decision table
| If you... | Lean toward | Reason |
|---|---|---|
| Already run APC network cards or PowerChute across sites | APC | Ecosystem consistency, shared spares and tooling |
| Already run CyberPower cards or PowerPanel Business | CyberPower | Same reasoning |
| Want pure sine for a gaming PC on a budget | Either; confirm waveform | CyberPower PFC Sinewave is sine by design; check the specific Back-UPS Pro model |
| Prefer standard off-the-shelf batteries | Often CyberPower (check model) | Many consumer models use standard sizes |
| Prefer a single cartridge part number | Often APC (check model) | RBC cartridges simplify ordering |
| Run a NAS or homelab with NUT | Either | Both widely supported; verify the exact model |
| Need online double conversion | Either (SRT or OL) | Compare sizes, plugs, efficiency modes and battery packs |
How to run your own comparison
- Measure your load in watts and size with the UPS sizing calculator.
- Pick the tier (topology and waveform) you need.
- Shortlist one model from each brand in that tier with similar watt ratings.
- Compare spec sheets line by line using UPS specifications explained: watt rating, runtime at your load, outlets, waveform, input plug.
- Check software support for your platform and the replacement battery for each model.
- Read both warranty documents for your region.
Considering Eaton too? See Eaton vs APC.
Frequently asked questions
Is APC or CyberPower more reliable?
There is no reliable public data that settles this for comparable models. Both brands have long-running product lines used widely in homes and businesses. Reliability in practice depends far more on correct sizing, ambient temperature, battery age and installation than on the brand. Compare the specific models you are considering on waveform, watt rating and support terms.
Which is better for a Synology or TrueNAS box, APC or CyberPower?
Both commonly work, because NAS operating systems typically talk to USB UPS units through NUT-based drivers that support many APC and CyberPower models. Check your NAS vendor's compatibility list and the NUT hardware list for the exact model, then test a shutdown before relying on it.
Is CyberPower PFC Sinewave equivalent to APC Back-UPS Pro?
They target the same buyer: a home office or gaming PC needing pure sine output on battery. Whether a specific Back-UPS Pro model outputs pure sine depends on the model, as APC has sold both simulated and sine wave versions in that family. Compare watt ratings, outlets and waveform on the spec sheets.
Can I use a CyberPower UPS with PowerChute, or an APC with PowerPanel?
Generally no. Each vendor's software is designed for its own hardware. For mixed fleets, Network UPS Tools or your operating system's built-in UPS support is the usual way to monitor both brands from one tool.
Are replacement batteries cheaper for CyberPower than for APC?
It often works out that way for consumer models, because many CyberPower units use standard-sized batteries that several makers produce, while APC commonly sells pre-assembled RBC cartridges. Many APC cartridges are themselves standard batteries with connectors and can be matched by third parties. Check the battery spec for your exact model.