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CCL Code: UPS0058
Manufacturer Code: BK650EI
| Manufacturer: APC

Key Features:

650VA 230V

Delivery Options

Tuesday 28th September via Priority Delivery

Free Delivery by Monday 4th October

Collection Options

Wednesday 29th September from Local Collection Point

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The re-invention of the most relied upon desktop UPS in history: the Back-UPS! The Back-UPS CS offers our best value for protecting your business and office computer systems. It provides battery backup power that allows you to work through short and medium length power outages. It also safeguards your equipment from damaging surges and spikes that travel along your utility and phone lines. Award-winning shutdown software automatically powers down your computer system in the event of an extended power outage. Additional features like audible alarms, LED status indicators, user replaceable battery, push-button circuit breakers and transformer-block spaced outlets make the Back-UPS CS the perfect unit to protect your business' productivity from the constant threat of power outages and lost data.

Main Features

  • APS Back-UPS CS 650VA 400W 230V
  • Input Connections: IEC-320 C14
  • Output connection: (1) IEC 320 C13 (Surge Protection) • (3) IEC 320 C13 (Battery Backup) • (2) IEC Jumpers (Surge Protection)
  • Interface Port(s): DB-9 RS-232, USB
  • Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leak proof
  • Serial Connectivity provides management of the UPS via a serial port
  • Serial Connectivity: Use any Home Automation network to monitor and control the S20 through its RS-232 serial port. For information on how to communicate with the S20, see APC's Application Note #102. Crestron and AMX installers should visit their respective websites for information on how to integrate the S20 into those networks
  • USB Connectivity: Provides management of the UPS via a USB port (not available on all models)
  • Colour: Beige
  • Two years repair or replace


Input Voltage Range 180 to 260 V AC


Output Capacity 650 VA
Output Wattage (Maximum) 0.4 kW
Output Wattage 400 Watts
Output Voltage 230 V AC


Surge Energy 320 Joules


Audible Alarm Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm
Control Panel LED status display with On Line : On Battery : Replace Battery and Overload indicators


Typical backup time at half load 14.8 minutes
Typical backup at full load 4.7 Minutes
Typical Recharge Time 8 Hours
Battery Type Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof


Input Connection type IEC-320 C14
Output Connections (1) IEC 320 C13 (Surge Protection) • (3) IEC 320 C13 (Battery Backup) • (2) IEC Jumpers (Surge Protection)
Interface Port DB-9 RS-232, USB


Performance A-tick, C-tick, CE, GOST, NEMKO


Operating Temperature 0 to 40 °C
Operating Humidity 5 to 95 %
Noise Level 45 dbA


Form Factor Standalone
Case Colour Beige
In The Box Back-UPS CS 650VA, CD with software, Documentation CD, Qty 2 - Detachable IEC C13 to IEC C14 power cords, USB cable
Width 9.1 cm
Depth 28.4 cm
Height 16.5 cm
Weight 6.03 kg


Typical recharge time 8 Hours


Warranty Two years repair or replace.

Item Details

Manufacturer APC
Manufacturer Code BK650EI
UPC 731304219781
Condition New

Warranty Information

Warranty Two years repair or replace.

Manufacturer Information

Manufacturer APC
Manufacturer Code BK650EI
Questions and Answers

Do you have you a question about the APC Back-UPS CS?

Q: Do you sell replacement Batteries for this device?
Answer by Website User on 9th May 2018
Unfortunately not, no.
0 customers found this answer helpful.
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Q: Can this UPS e-mail me if it looses power (UPS kicks in) Or do any of your UPS's do this?
Answer by Dan on 23rd September 2015
I'm not aware of any UPS that we carry with this feature unfortunately. -Danlevan
0 customers found this answer helpful.
Post Answer