Will this function with a 2018 Apple iMAC?

I use 2 of these to back up my entire home office - 2 computers, 3 screens, modem, router, switch, IP Phone, and it works flawlessly, I highly recommend. Should have no problems with your device.

Does the interface application work with Linux, specifically, Debian?

There is a package available for Debian called apcupsd that communicates with APC USB connected UPSes and manages system shutdowns. The PowerChute software from APC is available as an RPM from their website that you might be able to get working with alien to convert it under Debian but I'd recommend using apcupsd.

What is the watt-hour (Wh) rating of this UPS?

According to the APC website the rating is 102 VAh capacity 104 VAh runtime

Difference between BE850G2 and BE850M2?

This is a question for manufacturer. They look exactly the same. The difference might be in how audible alarm and when activates or some firmware improvements to the button control mechanism, perhaps even using new micro-controller chip inside. All to subtle for general description to mention. It does say M is the step up from G, so go with M when purchasing.

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Main image of APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 2 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 3 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 4 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 5 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 6 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 7 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 8 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 9 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 10 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 11 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 12 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 13 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 14 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 15 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 16 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 17 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 18 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 19 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Alt view image 20 of 20 - APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

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APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

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VA: 850 VA

425 VA
550 VA
600 VA
650 VA
850 VA

850 VA / 450 Watts
6 x NEMA 5-15R (Battery Backup)
3 x NEMA 5-15R (Surge Protected)
2 USB Charging Ports
120V Input / 5 Feet Power Cord
Step-up model of BE850M2

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This APC Back-UPS offers power and surge protection for wireless networks, computers, gaming consoles and other electronics in your home or business. The 850VA floor/wall mount UPS has 9 total outlets, 6 of which are battery back up and surge protection, and 3 that are surge protection only. It has a surge energy rating of 354 Joules. The 450w capacity is ideal for workstations, keeping you connected and productive during power fluctuations. This battery backup is designed to power wireless home networking devices (router and modem) for hours during utility outages so you can stay connected and productive.

Connect and charge mobile devices via the 2 USB port provides a maximum of 1.5A. The USB port will provide power when the UPS is both on utility and battery power. This computer backup offers lifetime guaranteed surge protection with a $75, 000 equipment protection policy. The side of this 850VA UPS includes 2 keyhole sockets to easily mount the battery backup on a wall in hard to reach installations. The outlets are arranged with spaces to accommodate both average sized power plugs and transformer block power plugs. This UPS has a CE product certification.

It is compatible with a dedicated user-replaceable battery, and the APC replacement battery cartridge helps restore UPS performance to the original specifications.

Best Seller Ranking	#17 in Battery Backup (UPS)

Model
Brand	APC
Series	Back-UPS
Model	BE850G2

Input
International Version	120V
Input Voltage Range	92 - 139V
Input Frequency	50/60 +/- 3 Hz (auto sensing)
Input Connection	NEMA 5-15P

Output
VA Rating	850 VA
Watts	450W
Output Voltage	120V
Output Frequency	50/60 +/- 3 Hz
Outlets	9
Outlet Type	(6) NEMA 5-15R (Battery Backup) (3) NEMA 5-15R (Surge Protection)

Battery
Battery Type	Lead Acid Battery
Battery Run Time	450W: 2 min
Battery Recharge Time	8 hour(s)
Battery Replaceable	RBC17

Details
Alarms	Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm
Interface Port	USB

Surge Protection
Surge Energy Rating	354 Joules

Features
Features	Adjustable voltage sensitivity Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications. Audible alarms Provides notification of changing utility power and UPS power conditions. Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Battery failure notification Provides early-warning fault analysis on batteries enabling timely preventive maintenance. Building Wiring Fault Indicator This LED informs users of potentially dangerous wiring problems in the wall circuit. Cold-start capable Provides temporary battery power when the utility power is out. Disconnected battery notification Warns when a battery is not available to provide backup power. Hot-swappable batteries Ensures clean, uninterrupted power to protected equipment while batteries are being replaced. Simple battery replacement Increases UPS availability by allowing quick, easy battery replacement. Transformer Block Spacing Connect bulky transformer block plugs without covering up other outlets. USB connectivity Provides management of the UPS via a USB port (not available on all models).

Dimensions & Weight
Dimensions	5.47" x 12.87" x 4.13"
Weight	9.04 lbs.

Package Contents
Package Contents	Includes: USB cable, User Manual

Additional Information
First Listed on Newegg	May 21, 2020

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Limited Warranty period (parts): 3 years
Limited Warranty period (labor): 3 years
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The APC Back-UPS BE850G2 is an 850VA/450W battery-backup UPS for home-office users who want brief backup power and surge protection for desktop computers, networking gear, and other 120V electronics, with six battery-backed outlets and three surge-only outlets.

Recommended For

Home-network users who want a modem and router to stay online through a short outage: APC’s runtime chart lists about 5.9 hours for a 10 W load, though actual runtime depends on connected equipment and battery condition.
Home-office users who need a brief window to save work and shut down a modest desktop setup during an outage, rather than continue working for an extended period.
People protecting a low-power NAS, modem, router, or switch who want time for a controlled shutdown during brief power interruptions; check that their NAS supports the UPS’s USB signaling.
Desk setups with several small electronics that need a mix of battery-backed and surge-only outlets, plus USB charging; note that only six of the nine outlets provide battery backup.

Spec Summary

Attribute	Value
Best For	Home or office equipment needing battery backup and surge protection
Power Input And Output	850 VA / 450 W capacity; 120 V output, with a 92–139 V input range and automatic 50/60 Hz sensing
Outlets And Connectivity	9 NEMA 5-15R outlets: 6 with battery backup and 3 with surge protection; USB interface
Battery And Runtime	Lead-acid battery; about 2 minutes of runtime at 450 W and an 8-hour recharge time; replaceable RBC17 battery
Surge Protection And Features	354-joule surge protection; adjustable voltage sensitivity, automatic battery self-test, cold-start capability, wiring-fault indicator, audible alarms, and battery-failure or disconnection notifications; hot-swappable battery with transformer-block spacing
Physical Specifications	Tower form factor; 5.47 × 12.87 × 4.13 in; 9.04 lb
Model Identifiers	APC Back-UPS BE850G2; 120 V version
Included Accessories	USB cable and user manual

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APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

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Customer Reviews of the APC BE850G2

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Spec Summary

Item#: N82E16842301731

Best Sellers

APC BE850G2 UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets(3 surge)- Tower - 8 Hour Recharge - 2 Minute Stand-by - 120 V Input - 120 V AC Output-Stepped Approximated Sine Wave - 6 x NEMA 5-15R

Learn more about the APC BE850G2

Customer Reviews of the APC BE850G2

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Recommended For

Spec Summary