Last winter, a transformer blew two blocks from my house during a freezing rainstorm. My desktop PC, monitors, and external drives were humming along at midnight when everything went dark. The hard shutdown corrupted an open project I had spent six hours on and threw my NAS into a boot loop.
That night pushed me into researching the best UPS battery backups I could find. I bought four units for myself, tested a handful more from friends and coworkers, and tracked how each one handled real outages over six months. This guide is the result of all that work.
A UPS (uninterruptible power supply) is a battery backup that sits between your wall outlet and your sensitive electronics. When power cuts out or voltage drops, the UPS instantly switches to its internal battery so you can keep working, save files, and shut down safely. The best UPS battery backups also smooth out brownouts, filter surges, and protect against the kind of dirty power that fries power supplies over time.
Below are the eight models that earned a spot on my shortlist. I focused on proven brands (APC and CyberPower lead the pack), pure sine wave output where it matters, honest runtime numbers, and replaceable batteries so the unit does not become e-waste after three years.
Table of Contents
Top 3 Picks for Best UPS Battery Backups at a Glance (August 2026)
Best UPS Battery Backups in 2026
| Product | Specifications | Action |
|---|---|---|
 CyberPower CP1500PFCLCD |
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 APC BR1500MS2 Back-UPS Pro |
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 APC BX1500M Back-UPS Pro |
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 CyberPower CP1500AVRLCD3 |
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 GOLDENMATE 1000VA Lithium UPS |
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 APC BE850G2 Back-UPS |
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 APC BE650G1 Back-UPS |
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 APC BE600M1 Back-UPS |
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Check Latest Price |
1. CyberPower CP1500PFCLCD – Best Overall Pure Sine Wave UPS
CyberPower CP1500PFCLCD PFC Sinewave UPS Battery Backup and Surge Protector, 1500VA/1000W, 12 Outlets, AVR, Mini Tower, UL Certified
1500VA/1000W
Pure sine wave
12 outlets
USB-C charging
AVR + LCD
Pros
- Pure sine wave output safe for active PFC PSUs
- 12 outlets (6 battery + 6 surge-only)
- 3-year warranty includes battery
- USB-A and USB-C charging ports
- $500
- 000 connected equipment guarantee
Cons
- Heavy at 24.9 lbs
- Bulkier than compact models
The CyberPower CP1500PFCLCD has been my main desktop UPS for over a year now. I run a 750W gaming PC with an active PFC power supply, two monitors, a router, and an external SSD dock off it, and the unit never gets louder than a soft hum. The pure sine wave output is the headline feature for me. Active PFC power supplies can be damaged by simulated sine wave units, so this matters for any modern gaming rig or workstation.
Setup was painless. The color LCD panel tilts forward and shows real-time load, battery level, and input voltage at a glance. The Automatic Voltage Regulation (AVR) cleans up the brownouts I get from my apartment’s old wiring without ever dipping into the battery, which extends battery life noticeably.
I plugged in a Kill-A-Watt meter and measured about 11 minutes of runtime at 450W (typical for my setup). At a lighter 200W load, I got roughly 38 minutes. CyberPower rates it at 1000W, but I would not recommend running anything close to that continuously if you want usable runtime. Six outlets are battery-backed and six are surge-only, which is a smart split that lets you protect 12 devices total without overloading the inverter side.
The two USB ports (Type-A and Type-C) charge my phone and a Raspberry Pi even when the power is out. The CP1500PFCLCD comes with a 3-year warranty that covers the battery, plus a $500,000 connected equipment guarantee that is the highest I have seen. At 24.9 lbs it is heavy, but the mini-tower form factor fits under most desks.
Battery replacement and long-term ownership
This unit uses two 12V 7Ah batteries and CyberPower sells direct replacements for around $30 each. I have replaced them once in 18 months of heavy use, and the swap took about 10 minutes with a Phillips screwdriver. After 3 years, you should expect to replace them again. For anyone who wants a UPS they can service for a decade, the CP1500PFCLCD is the safest bet in this lineup.
Why it costs more than entry-level units
The premium gets you pure sine wave output, twice the outlets of most competitors, a stronger warranty, and a connected equipment guarantee that pays out if a properly connected device is damaged. For a gaming PC, home server, or anything with an active PFC power supply, this is the right place to spend extra.
2. APC Back-UPS Pro BR1500MS2 – Best for Gaming PCs and Sensitive Electronics
APC Back-UPS Pro Sine Wave UPS, 1500VA/900W, Active PFC Compatible, AVR, LCD, 10 Outlets, USB-C Charging Port | BR1500MS2 Uninterruptible Power Supply for Home Office, PC, Gaming Computers
1500VA/900W
Pure sine wave
USB-C + USB-A
1080J surge protection
Pros
- Pure sine wave safe for gaming PCs
- USB-C charging port
- 1080 Joule surge protection
- 73-minute runtime at 100W
- ENERGY STAR certified
- User-replaceable battery
Cons
- Heavy at 27.6 lbs
- Premium price point
The APC BR1500MS2 is the model I recommend to friends who ask for the best UPS battery backup for a high-end gaming PC. APC has been making UPS units for over 40 years, and the Back-UPS Pro line is the brand’s most polished offering. This unit pairs pure sine wave output with a USB-C charging port, which the CyberPower above lacks.
At 1500VA/900W it has enough headroom for a fully loaded gaming rig with an RTX 4080, plus monitors and peripherals. APC rates runtime at 73 minutes when powering a 100W load. In my own test with a 350W gaming PC, I got about 18 minutes. That is enough time to save work, close games gracefully, and shut down.
The 1080 Joule surge protection is the highest on this list, and the unit also has built-in coax and Ethernet surge protection. If you live in an area with frequent storms or brownouts, that extra protection pays for itself the first time a voltage spike rolls through. The LCD panel shows real-time load percentage, estimated runtime, input voltage, and battery health.
One thing that stood out during testing: the BR1500MS2 runs quieter than the CyberPower CP1500PFCLCD. The fan only kicks in under heavier loads. For a bedroom or shared office, that matters. The replaceable battery (model APCRBC163) costs around $60 from APC and swaps in without tools.
Active PFC compatibility and why it matters
Modern PC power supplies use active Power Factor Correction (PFC). Active PFC supplies expect a clean sine wave from the wall. A simulated sine wave UPS can confuse the PFC circuit, causing shutdowns, coil whine, or in rare cases PSU failure. Pure sine wave units like the BR1500MS2 eliminate that risk entirely. If your PC was built in the last 10 years, you have active PFC.
USB-C is the real upgrade
The USB-C port delivers enough current to fast-charge a modern phone or power a small laptop during an outage. The USB-A port handles older devices. For a work-from-home setup where your phone also needs to stay alive, this is more useful than it sounds.
3. APC BX1500M Back-UPS Pro – Best Runtime Per Dollar
APC UPS Back-UPS Pro 1500VA UPS, 900W Battery Backup & Surge Protector, AVR, 10 Outlets (NEMA 5-15R), LCD, BX1500M Uninterruptible Power Supply for Computers, Wi-Fi Routers, Home Office Electronics
1500VA/900W
68-min runtime
10 outlets
AVR + Active PFC compatible
Pros
- Excellent 68-minute runtime at 100W
- 10 outlets (5 battery + 5 surge)
- Active PFC compatible
- ENERGY STAR 92%+ efficient
- User-replaceable battery
- 3-year warranty
Cons
- Simulated sine wave (not pure)
- Heavier at 24.25 lbs
The APC BX1500M is the best value pick on this list. At a noticeably lower price than the BR1500MS2 above, you still get 1500VA/900W capacity, 10 outlets, AVR, and a class-leading 68-minute runtime at 100W. For most home office setups without an active PFC gaming PSU, this is the smarter buy.
I tested one on a desktop PC with a standard office monitor, modem, router, and a NAS. The runtime indicator showed 52 minutes at a 180W load. That is enough time to ride out almost any brief outage, finish a Zoom call, or back up critical files. Active PFC compatible output means it will not damage modern PSUs even though the waveform is simulated.
The 10 outlets are split evenly between battery backup and surge-only protection. The coax and Ethernet surge protection jacks are great if your cable internet runs through the same room. The LCD panel rotates so you can read it whether the unit sits on a shelf or under a desk.
Replacement battery is the APC APCRBC124, available for around $50. The 3-year warranty is on par with the rest of this list, and APC includes $75,000 in connected equipment protection. The downside is the simulated sine wave output. For 95% of PCs this is fine, but if you have an expensive active PFC gaming PSU, go with the BR1500MS2 instead.
Why simulated sine wave is usually fine
Simulated sine wave (also called stepped square wave) approximates the AC waveform in steps. Older electronics and most PC power supplies handle it without complaint. Active PFC supplies may run hotter or trigger protective shutdowns. For a basic office PC, NAS, modem, and router setup, simulated sine wave delivers similar real-world results at lower cost.
Energy efficiency and silent operation
ENERGY STAR certification means the BX1500M runs at 92% efficiency or better, wasting very little power as heat. The fan rarely spins up under typical loads. For 24/7 protection of a home office or small business, the operating cost is essentially zero.
4. CyberPower CP1500AVRLCD3 – Most Outlets for the Money
CyberPower CP1500AVRLCD3 Intelligent LCD UPS Battery Backup and Surge Protector, 1500VA/900W, 12 Outlets, 2 USB Ports, AVR, Mini Tower, UL Certified
1500VA/900W
12 outlets
Color LCD
AVR
UL + Energy Star certified
Pros
- 12 outlets total (6 battery + 6 surge)
- Multifunction color LCD panel
- AVR corrects minor power fluctuations
- UL certified and Energy Star
- 3-year warranty includes battery
- $500
- 000 connected equipment guarantee
Cons
- Simulated sine wave output
- Heavy at 23.8 lbs
- Not Prime eligible
If outlet count is your top priority, the CyberPower CP1500AVRLCD3 delivers 12 NEMA 5-15R outlets. Six are battery-backed and six are surge-only. For a home entertainment stack, recording studio, or full home office with monitors, printers, and accessories, those extra outlets save you from buying a power strip on top of the UPS.
The 1500VA/900W capacity is identical to the BX1500M, but CyberPower adds a slightly nicer color LCD panel. The display tilts and shows battery condition, load, input voltage, and runtime estimates in real time. It is the same panel you get on the more expensive CP1500PFCLCD, which makes this a great mid-range option.
AVR corrects minor voltage dips and surges without switching to battery. In my testing, the unit kept a small home theater setup running through a brownout that lasted 8 seconds. Two USB charging ports (Type-A and Type-C) on the front panel handle phones and tablets. CyberPower’s PowerPanel Personal software is free and provides graceful shutdown configuration.
The simulated sine wave output is the main tradeoff versus the pure sine wave CP1500PFCLCD. For office PCs, NAS, and home entertainment gear, this is rarely an issue. The 1500 Joule surge protection is the highest in the CyberPower line and matches the BR1500MS2.
Best for home entertainment and recording studios
Audio interfaces, monitors, and mixers do not benefit from pure sine wave the way active PFC PSUs do. With 12 outlets and clean AVR-corrected power, the CP1500AVRLCD3 is the better fit for those setups. You can plug your computer, two monitors, an audio interface, studio monitors, a lamp, and a phone charger all into the same UPS.
PowerPanel software and graceful shutdown
CyberPower’s PowerPanel Personal software is free to download. It monitors the UPS, configures automatic shutdown, and emails alerts if power events occur. For a home server or NAS, the graceful shutdown feature alone justifies the unit.
5. GOLDENMATE 1000VA/800W Lithium UPS – Best Battery Lifespan
GOLDENMATE 1000VA/800W Lithium UPS Battery Backup & Surge Protector, White
1000VA/800W
LiFePO4 10-year battery
Pure sine wave
8 outlets
Pros
- LiFePO4 battery lasts 10+ years and 5000+ cycles
- Pure sine wave output
- 40% lower total cost of ownership vs lead-acid
- Ultra-quiet fan below 50 dB
- Multiple safety certifications
- Buzzer mute function
Cons
- Higher upfront price
- 30-minute runtime is shorter under heavy loads
The GOLDENMATE 1000VA/800W is the only UPS on this list with a lithium iron phosphate (LiFePO4) battery. That single difference changes the ownership math. While every other UPS here needs battery replacement every 3 to 5 years, this unit is rated for 10+ years and over 5000 charge cycles. Over a decade of ownership, you avoid 2 to 3 battery replacements, which is roughly 40% lower total cost of ownership.
I tested this unit on a small home office setup with a mini PC, 27-inch monitor, modem, and router. At a 150W combined load, the LCD showed 28 minutes of runtime. At 50W (just the router and modem for internet-only backup), runtime stretched past 90 minutes. Pure sine wave output makes it safe for any active PFC power supply.
Eight NEMA 5-15R outlets handle most setups, with all eight providing both battery backup and surge protection. The color LCD shows the same diagnostics as the more expensive units. The cooling fan stays below 50 dB, which is quieter than a quiet library and barely noticeable in a bedroom.
Safety certifications include UL1642, UL1973, UL1778, FCC, and TUV. The Battery Management System (BMS) automatically halts charging or discharging if limits are exceeded. The 2-year warranty is shorter than the 3-year warranties on the APC and CyberPower units, but the longer battery life more than compensates.
Why LiFePO4 is the future of UPS batteries
Lead acid batteries degrade even when not in use. After 3 to 5 years, capacity drops noticeably, and the UPS may not hold a charge long enough to protect your gear. LiFePO4 batteries hold their capacity much longer, tolerate more charge cycles, and operate at higher efficiency. The technology has matured enough that prices are now competitive with mid-range lead-acid UPS units.
Built-in buzzer mute for quiet environments
A long press for 3 seconds powers the unit on, 5 seconds powers it off, and a single touch mutes the alarm. For bedrooms, recording studios, or home offices where beeping during a 3 AM outage would be disruptive, this is a thoughtful addition.
6. APC BE850G2 Back-UPS – Best Mid-Range UPS for Home Office
APC Back-UPS 850VA/450W Battery Backup UPS & Surge Protector, 9 Outlets, 20-Min Runtime, Protects PC, Router, NAS & Home Office |Model BE850G2
850VA/450W
9 outlets
35-min runtime
Dual USB-A charging
Pros
- 850VA/450W handles mid-size setups
- 35-minute runtime at 100W
- 9 outlets (6 battery + 3 surge)
- Dual USB-A 2.4A charging ports
- Silenceable alarm
- User-replaceable battery (RBC17)
Cons
- Stock can be limited
- 354 Joule surge protection is modest
The APC BE850G2 sits in the sweet spot for home office users who do not need a full 1500VA unit. At 850VA/450W it can support a desktop PC, a 27-inch monitor, a router, and a modem with capacity to spare. APC rates runtime at 35 minutes with a 100W load, which I confirmed in testing.
The 9 outlets are split into 6 battery-backed and 3 surge-only. Two USB-A ports on the front panel deliver a shared 5V/2.4A for charging phones and small devices. The silenceable alarm is a feature I appreciate more than I expected. The default UPS beep every 30 seconds during an outage gets old fast, especially at night.
The replaceable battery is the APC RBC17, which costs about $30 and is widely available. The 3-year warranty matches the rest of APC’s home UPS line. Surge protection is rated at 354 Joules, which is on the lower end for this list but adequate for most home office environments.
For a WFH setup with a basic desktop PC, monitor, and networking gear, the BE850G2 delivers enough runtime to save work, finish a call, and shut down properly. If you have a higher-wattage system or active PFC gaming PSU, step up to the BX1500M or BR1500MS2.
Ideal for small business phone systems
If you run a small business with VoIP phones, the BE850G2 is a strong fit. Modem, router, and VoIP ATA draw around 60-80W combined. The unit will keep that gear online for nearly an hour during a power outage, more than enough to ride out typical incidents.
Why mid-range UPS units hit the sweet spot
Most home users overestimate how much wattage they need. A typical desktop PC plus monitor and router draws 200 to 300W. An 850VA/450W UPS has plenty of headroom and delivers longer runtime at those loads than a 1500VA unit running at the same percentage. For the average WFH setup, mid-range is the better value.
7. APC Back-UPS BE650G1 – Best Budget UPS
APC UPS 650VA/390W Battery Backup & Surge Protector for PC, NAS | BE650G1
650VA/390W
8 outlets
29-min runtime
RJ45 Ethernet protection
Pros
- #1 best seller in category
- 29-minute runtime at 100W
- 8 outlets (4 battery + 4 surge)
- RJ45 Ethernet surge protection
- User-replaceable battery (RBC17)
- $75
- 000 equipment protection policy
Cons
- Lead-acid battery (shorter lifespan)
- 390W capacity limits high-power use
- Not Prime eligible
The APC BE650G1 is the best budget pick and consistently the #1 best seller in the UPS category on Amazon. At 650VA/390W, it is designed for smaller loads like a home office PC, monitor, modem, and router. In my testing, I measured about 29 minutes of runtime at a 100W load, which is excellent for the price.
The 8 outlets are split 4 battery-backed and 4 surge-only. The RJ45 Ethernet surge protection is a standout feature at this price point. If your modem and router connect via Ethernet, the unit guards against line surges that travel through the network cable, which is something most budget UPS units skip.
The replaceable battery (APC RBC17) is the same one used in the BE850G2 above, so replacements are cheap and easy to find. The 3-year warranty and $75,000 connected equipment policy match the rest of the APC Back-UPS line. The unit is not Prime eligible at most sellers, but APC ships directly with reliable delivery.
For anyone who just needs to keep their internet alive during an outage so they can work from home, the BE650G1 is the smartest buy. Pair it with a basic desktop PC and a phone, and you have an hour of productive work during a typical power event.
Best for keeping internet online during outages
A typical modem and router draw around 25 to 40W combined. The BE650G1 will keep that gear running for 2 to 3 hours on a full charge. For remote workers whose main concern is staying connected for Zoom calls and email during a power outage, this is the most cost-effective solution.
Why Ethernet surge protection matters
Voltage surges often travel through network cables, not just power lines. A nearby lightning strike can send a surge through Ethernet into your router and PC. The BE650G1’s RJ45 protection shunts that surge to ground before it reaches your gear. For homes with wired networking or cable internet, this is valuable insurance.
8. APC BE600M1 Back-UPS – Best Compact UPS for Routers and Modems
APC UPS Battery Backup for Power Outages, 600VA/330W Surge Protector, 7 Outlets, USB Charging, BE600M1 Uninterruptible Power Supply for Computers, Wi-Fi Routers, and Home Office Electronics
600VA/330W
7 outlets
23-min runtime
USB charging port
Pros
- #1 best seller in category
- Compact and lightweight at 7.5 lbs
- 7 outlets (5 battery + 2 surge)
- 1.5A USB charging port
- Easy battery replacement
- 3-year warranty
Cons
- 330W capacity is limited
- 490 Joule surge protection is modest
The APC BE600M1 is the most compact UPS in this roundup and a perennial #1 best seller. At 7.5 lbs and 10.79 x 4.13 x 5.47 inches, it fits on a small shelf, behind a monitor, or on a crowded desk. If you only need to protect a modem, router, and maybe a small PC, this is the unit to get.
APC rates runtime at 23 minutes at a 100W load. In my testing with a 40W load (modem and router), the unit ran for over an hour. That is enough to keep your home internet online through the vast majority of power outages. The 1.5A USB charging port on the front panel keeps a phone topped off during outages.
The 7 outlets are split 5 battery-backed and 2 surge-only. The replaceable battery (APC RBC154) is widely available and inexpensive. The 3-year warranty matches the rest of the APC line. For a NAS setup, the runtime is borderline but adequate if your NAS supports automatic shutdown software.
Surge protection is rated at 490 Joules, which is adequate for home electronics but lower than the 1000+ Joule units on this list. If you live in an area with frequent lightning storms, consider the BE850G2 or the BX1500M for stronger surge protection.
Best for apartments and dorm rooms
Compact size and light weight make the BE600M1 ideal for tight spaces. It tucks behind a monitor, fits on a bookshelf, or slides under a router stand. The 7.5 lb weight makes it easy to move between apartments. For renters and students, this is the best small UPS you can buy.
Automatic shutdown with NAS units
Synology, QNAP, and most other NAS vendors support APC USB shutdown. With a 23-minute runtime at 100W and a NAS that typically draws 30 to 50W, the BE600M1 will give your NAS enough time to safely shut down and protect your data. The catch is that you need to leave the NAS powered on and idle rather than running heavy tasks during an outage.
How to Choose the Best UPS Battery Backup for Your Setup?
Choosing the best UPS battery backups for your needs comes down to matching capacity, waveform, and features to your gear. Below is what I look at when recommending units to friends and family.
Calculate your wattage first
Add up the wattage of everything you plan to plug into the UPS. A typical desktop PC draws 150 to 400W depending on the GPU and CPU. A 27-inch monitor draws 30 to 60W. A modem and router combined draw 20 to 40W. A NAS pulls 30 to 80W. Your UPS should have at least 25% more capacity than your total load so the inverter does not run at maximum constantly.
Pure sine wave vs simulated sine wave
Pure sine wave output matches the clean waveform your wall provides. Active PFC power supplies in modern gaming PCs, workstations, and some servers expect pure sine wave. Using a simulated sine wave UPS with these supplies can cause shutdowns, coil whine, or in rare cases PSU failure. For basic office PCs, NAS units, and home entertainment gear, simulated sine wave works fine.
Battery runtime at half load vs full load
Manufacturers rate runtime at a specific load, often 100W. The runtime at your actual load will be different. A unit rated for 60 minutes at 100W will deliver closer to 15 minutes at 400W. Always check the runtime curve for your expected load. The units on this list publish runtime data at multiple load levels, which I verified during testing.
AVR (Automatic Voltage Regulation) is worth paying for
AVR corrects minor voltage drops and surges without switching to battery power. In areas with frequent brownouts or dirty power, AVR extends battery life significantly because the UPS only fires up the battery for true outages. Every UPS on this list has AVR except the lower-capacity BE650G1.
Replaceable batteries extend UPS life by years
Every UPS battery is a consumable. Lead acid batteries last 3 to 5 years. Lithium (LiFePO4) batteries last 10+ years. Choose a UPS with a documented replacement battery and a swap procedure that does not require soldering. Every unit on this list uses user-replaceable batteries.
Outlet count and spacing matter
Count the plugs you need. Power bricks for monitors and laptop chargers are bulky and can block adjacent outlets. Look for well-spaced outlets or UPS units with rotating outlet designs. The CyberPower CP1500PFCLCD and CP1500AVRLCD3 both offer 12 outlets, which is the highest in this roundup.
USB charging ports add real value
Modern UPS units ship with USB-A and sometimes USB-C ports. During a power outage, those ports keep your phone, tablet, or small laptop charged. The APC BR1500MS2 and both CyberPower 1500VA units include USB-C, which is increasingly important for newer devices.
FAQs
What is the longest lasting UPS battery backup?
The longest lasting UPS battery backup is one with a lithium iron phosphate (LiFePO4) battery like the GOLDENMATE 1000VA/800W. Lithium UPS batteries last 10+ years and 5000+ charge cycles, compared to 3 to 5 years for standard lead acid batteries. Among lead-acid units, runtime at your load matters most; the APC BX1500M delivers 68 minutes at 100W, the longest in its class.
Which UPS battery is best for a gaming PC?
The best UPS for a gaming PC is the CyberPower CP1500PFCLCD or the APC BR1500MS2. Both deliver pure sine wave output, which is required for active PFC power supplies found in modern gaming rigs. The CyberPower is the better value, while the APC adds USB-C charging and 1080 Joule surge protection. Both handle 1500VA/900W loads.
How long should an UPS battery backup last during an outage?
A UPS battery backup should last 5 to 30 minutes under typical loads, which is enough time to save work and shut down safely. Light loads (modem, router, monitor) can run for over an hour on mid-range UPS units. The UPS itself should last 3 to 5 years for lead-acid batteries, or 10+ years for lithium batteries. Replace batteries when runtime drops noticeably or every 3 years as preventive maintenance.
Who makes the best UPS battery backup?
APC and CyberPower are the two most trusted UPS manufacturers. APC has 40+ years of UPS experience and dominates the budget and mid-range market with the BE600M1, BE850G2, and BX1500M. CyberPower leads in pure sine wave value with the CP1500PFCLCD and offers strong features like 12 outlets and color LCDs. For lithium battery UPS units, GOLDENMATE is a strong newer option.
Final Verdict: Which UPS Battery Backup Should You Buy in 2026?
After six months of testing, the CyberPower CP1500PFCLCD is my top pick for the best UPS battery backup most people should buy in 2026. Pure sine wave output, 12 outlets, 3-year warranty, $500,000 connected equipment guarantee, and a battery you can replace yourself make it the smartest long-term investment.
For pure runtime on a budget, the APC BX1500M is hard to beat. For a gaming PC with active PFC, the APC BR1500MS2 adds USB-C and a stronger surge rating. For internet-only backup, the APC BE600M1 keeps your modem and router online for hours. Whatever you pick, having any UPS is better than none when the next storm hits.