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LENOVO 78175720 BACK UPS 850VA 2 USB PORTS

Mfg Part Number:  78175720  
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Price: $200.46
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Last Updated: Feb 24, 2026
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When the power goes out, an APC battery backup with surge protection provides guaranteed power for computers, external hard-drives and other electronics, including your wireless router so you can maintain a network connection for your IoT devices when you need it most! Ideal for full-sized computers and monitors, the Back-UPS BE850G2 offers 450W of power, 9 total outlets, plus two USB Charging ports (2.4A shared).

Key Details | 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).

Main Specification
General Information
Manufacturer Lenovo Group Limited
Manufacturer Part Number 78175720
Manufacturer Website Address http://www.lenovo.com/us/en/
Brand Name Lenovo
Product Line Back-UPS
Product Name APC Back-UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets (3 surge)
Product Type Line-interactive UPS
Technical Information
Plug/Connector Type NEMA 5-15P
Receptacle Type NEMA 5-15R
Receptacle Type USB Type A
Receptacle Detail 2 x USB Type A
Receptacle Detail 9 x NEMA 5-15R
Number of Battery & Surge Outlets 6
Number of Surge-only Outlets 3
Overload Protection Yes
Cord Length 5 ft
Transfer Time 6 ms
Application/Usage Computer
Application/Usage Electronic
Application/Usage Server
Application/Usage Tablet
Application/Usage Wireless Router
Application/Usage Mobile Device
Application/Usage Monitor
Application/Usage IOT Device
Application/Usage Desktop
Application/Usage Workstation
Application/Usage External Hard Drive
Surge Suppression Yes
Features Cold Start Function
Features Audible Alarm
Power Description
Load Capacity (VA) 850 VA
Load Capacity (Watt) 450 W
Input Voltage 120 V AC
Input Voltage Range 88 V AC - 142 V AC
Output Voltage 120 V AC
Input Frequency 60 Hz
Input Frequency 50 Hz
Output Frequency 60 Hz
Output Frequency 50 Hz
Waveform Type Stepped Approximated Sine Wave
Surge Energy Rating 354 J
Circuit Breaker Yes
Management
Alarm Changing Utility Power
Alarm UPS Power Condition
Controls/Indicators
Status Indicators

LED Indicators:

  • Wire fault indicator
  • Battery failure notification
Interfaces/Ports
USB Yes
Number of USB Ports 2
Battery Information
Number of Batteries 1
Battery Characteristics Maintenance-free, Sealed, Leak-proof
Battery Chemistry Lead Acid
Battery Size 12V
Backup/Run Time (Half Load) 10 Minute
Backup/Run Time With External Battery Cabinet (Full Load) 35.60 Minute
Backup/Run Time With External Battery Cabinet (Half Load) 1.32 Hour
Typical Battery Recharge Time 8 Hour
Hot Swappable Yes
Replaceable Battery Yes
Environmental Conditions
Minimum Operating Temperature 32°F (0°C)
Maximum Operating Temperature 104°F (40°C)
Operating Humidity 0% - 95%
Sound Emission (A-Weighted) 45 dB(A)
Physical Characteristics
Color Family Black
Product Color Black
Height 5.5"
Width 12.9"
Depth 4.1"
Form Factor Floor/Wall Mountable
Weight (Approximate) 9.04 lb
Miscellaneous
Package Contents
  • APC Back-UPS 850VA, 120V, 2 USB charging ports, 9 NEMA outlets (3 surge)
  • Power Cable
  • USB Cable
Certifications & Standards
  • UL 1778
  • cTUVus
  • CEC
  • CSA C22.2 No. 107.3
  • IP50
  • SVHC
  • FCC CFR47 Part 15 B Class B
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Warranty
Limited Warranty 3 Year
Additional Warranty Information

Limited warranty - parts and labor - 3 years

Directly Connected Equipment Guarantee $75000
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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