How many joules? 5s1500lcd

The answer to that question depends on the load. If you load the UPS lightly, you will be able to extract more energy (Joules) then if it had a heavy load. That's pretty-much the nature of batteries. I have an Ellipse PRO 1500 running a 55-inch TV, Stereo, and two PC-style computers. If the TV and Stereo are off, the UPS says I'm drawing 138 watts, and the UPS expects to be able to run for 41 minutes. With 1 watt = 1 Joule/second, that's about 340,000 Joules. If I turn on the TV and Stereo, the power rises to 442 watts, and the run-time drops to 7 minutes, 26 seconds. Now the total energy available in Joules is down to 197,000. I hope these two data points tell you what you need to know.

Does this have an alarm for when it is running on battery? If so can it be muted at all times?

The 3S350 does have an audible alarm when power is removed, beeping once every 3 or 4 seconds. Unfortunately, it is not very loud. Depending upon where it is placed you may not even be able to hear it. There is no way to silence the alarm. For my money this is still the best value.

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Eaton 3S750 UPS Battery Backup & Surge Protector, 750VA / 450W, 10 Outlets for Home or Office Devices (Not for Sale in CO, VT, or WA)

Eaton 3S750 UPS Battery Backup & Surge Protector, 750VA / 450W, 10 Outlets for Home or Office Devices (Not for Sale in CO, VT, or WA)

Product ID: 15180201

Details

Brand
Eaton
Battery Cell Composition
Lead-Acid AGM
Voltage
120 Volts
Color
Black
Item Weight
9.7 Pounds

💻USB plug-and-play power management

🔋750VA / 450W power capacity

🔌10 total outlets (5 battery + surge, 5 surge only)

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Description

⚡ Power up smart, stay connected longer!

SILENT SLEEK - Fanless design ensures whisper-quiet operation in any workspace
SMART ENERGY SAVER - EcoControl cuts up to 30% energy waste on idle peripherals
PLUG AND PLAY SIMPLICITY - Instant USB integration with Windows, Mac, and Linux systems
SEAMLESS POWER PROTECTION - 750VA backup keeps your devices running through outages
COMPREHENSIVE SURGE DEFENSE - 10/100 Mbps RJ-45 data line protection guards your network gear

The Eaton 3S750 UPS delivers reliable 750VA/450W battery backup and surge protection with 10 outlets, including 5 that provide battery backup. Its fanless design ensures silent operation, while USB plug-and-play integration supports Windows, Mac, and Linux. Featuring EcoControl technology, it reduces energy consumption by up to 30% and protects network devices with RJ-45 surge protection. Ideal for home and office setups, it comes with a 3-year warranty and a $25,000 load protection guarantee.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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