We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact black UPS tower with six IEC outlets and front panel controls

APC

APC Back-UPS BK650EI 650VA 400W UPS

SKU CH-6AVM-66HQ8 MPN BK650EI

A 650 VA, 400 W battery backup with six IEC outlets, three providing battery power and three surge-only, plus USB and RS-232 management ports

  • Voltage version230 V
  • AC input voltage180–266 V Adjustable range: 160–286 V
  • Input line frequency50 / 60 Hz +/- 3 Hz (auto sensing)
  • Power inputIEC-320 C14
  • Volt-ampere rating650 VA
  • Power rating400 W
  • 400 W output keeps a desktop and monitor running during outages
  • 650 VA rating handles typical home-office power loads
  • Six IEC outlets provide three battery-backed and three surge-only sockets
  • USB and RS-232 ports enable automatic shutdown via management software
  • 310 J surge rating protects connected equipment from voltage spikes

Right-size power protection

The APC Back-UPS BK650EI delivers 650 VA and 400 W of battery backup for desktop PCs, networking gear and peripherals. Six IEC 320 C13 outlets provide three battery-backed sockets and three surge-only sockets plus two IEC jumpers for protected devices. International 230 V input and output suit office and home environments.

Verify your mains and plugs

Confirm your wall supply sits between 180 V and 266 V, with an adjustable range of 160 V to 286 V. The unit accepts 50 Hz or 60 Hz within ±3 Hz and connects via an IEC-320 C14 inlet. Ensure attached equipment draws no more than 400 W total and that each device uses an IEC C13 plug.

Integrate into a workstation

The UPS occupies 6.50" x 3.58" x 11.18" and weighs approximately 13 lb, fitting under or beside most desks. RS-232 and USB ports enable management software, while an RJ-45 jack protects analogue phone, fax, modem or DSL lines. Battery recharge takes 8 hours; replacement cartridges include BX1100LI-MS, BX800U-LM and RBC17.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $149.99
Cheaper than about 85% of the 1,153 comparable items (median $948.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAPC
Product lineBack-UPS
Model nameBK650EI
Ports & slots
Communication portsRS-232, USB
Protected data linesAnalog phone line for phone/fax/modem/DSL (RJ-45 connector)
Power
Voltage version230 V
AC input voltage180–266 V
Adjustable range: 160–286 V
Input line frequency50 / 60 Hz +/- 3 Hz (auto sensing)
Power inputIEC-320 C14
Volt-ampere rating650 VA
Power rating400 W
Voltage output230 V
AC output frequency47–63 Hz
Power outlets6
Battery charge time8 hour(s)
Replacement batteryBX1100LI-MS, BX800U-LM, RBC17
AlertsAlarm when on battery: distinctive low battery alarm: overload continuous tone alarm
Surge protection rating310 Joules
Size & build
Product dimensions6.5 in × 3.58 in × 11.18 in (H × W × D)
Product weight13.29 lb (6.03 kg)
Shipping weight7.30 kg
Package size494 × 415 × 185 mm

Questions about this item

What comes in the box and what must I purchase separately?

The package includes the Back-UPS CS 650VA 230V unit, a CD with software, a USB cable and a user manual. The optional Simple Signalling RS-232 cable is not included and must be bought separately.

How do I choose between the listed outlet types for my equipment?

Connect critical devices such as a PC or router to the three IEC 320 C13 outlets marked Battery Backup so they stay powered during an outage. Use the single IEC 320 C13 surge-only outlet and the two IEC Jumpers for peripherals that only need surge protection.

What does the 650 VA / 400 W rating mean for actual runtime?

At full 400 W load the unit provides approximately 11.40 minutes of backup power; lighter loads will extend that time. The battery recharges in about 8 hours after a discharge.

More in Uninterruptible Power Supplies (UPS)

Similar items