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The Unit
  • Output power capacity 650 VA
  • Output power capacity 410 Watts
  • Nominal output voltage 120 V
  • Waveform type Stepped approximation to a sinewave
  • Typical backup time at half load 13.9 minutes
  • Surge energy rating (Joules) 480
  • Audible noise at 1 meter from surface of unit
  • Approvals CSA;FCC B;UL 1778


(+,-) $299USD

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The APC Back-UPS PRO 650

Just a few weeks ago we looked APC's Back-UPS 650 unit. It ended winning our editor's choice award for its features and affordability. However, the UPS 650 was not perfect in all ways: the biggest complaint was lying in its recharge times. A typical 11 hours was required to fully charge the battery. Another of our complaints to APC was for not including the computer interface in the kit; you had to fill out a form and send it to APC in order to obtain the kit. However, these little negatives were not enough for not recommending the UPS 650, its affordable price was really where it shined.

In this article we look at APC's new and improved Back-UPS 650 Solution, its the new brother of the previous reviewed UPS 650. Both units are very similar in technical terms and designs, however the PRO version comes with more features, like an LED message center on the front side.

A study by IBM has shown that a typical computer is subject to more than 120 power problems per month. The effects of power problem range from the subtle keyboard lockups, hardware degradation to the dramatic complete data loss or burnt motherboards.

According to a survey by the Yankee Group, almost half of the corporations researched put their down time costs at upwards of $1.000(US) per hour, with nine percent estimating costs up to or more than $50.000(US) per hour. Clearly, businesses are becoming increasingly reliant on utility power supplies that are pushed beyond their capacity. Of-course these realities do not only concern companies or big corporations. They are also touching a very big portion of home users: a slight power problem could result in anything from losing your precious work to serious hardware damage to your PC.

A Technical Overview

The first noticeable thing about the Back-UPS PRO 650 is its improved design. The PRO versions (650 and lower) are painted black (
Charcoal) and have a very attractive appearance. APC decided to use some of their fashion talents and completely redesign the main face of the unit; they eliminated the old styled switches featured on its older units, with a single power button and four messages LEDís. For the final touches, they have bumped some corners to get a futuristic look.

As already stated earlier, the front side of the unit features a message center powered by LEDís. First is the on-line LED, it illuminates when the UPS is supplying utility power to the battery load. Second, is the Overload LED, it illuminates when loads exceed the UPSí capacity. Third is the On-Battery LED, it illuminates when the UPS is operating using the battery, fourth and last is the Replace-Battery LED, when the battery fails a self test, the replace-battery LED illuminates.

Output power capacity
Typical recharge time
Back-UP Time (*)
Price ($USD)
Back-UPS PRO 650
6 Hours
44Min, 53Sec
Back-UPS 650
11 Hours
35Min, 27Sec
*Varies PC to PC

The PRO 650 has an identical set of features in the back as the earlier reviewed Back-UPS 650. It includes a FAX/Modem surge protection that will guard your PC from "back-door" surges. You can only use one telephone line on it as it only features a line in and a line out. It also features two surge protection outlets that are designed for equipment that needs surge protection and not power back up during an outage. The PRO model also features two BlockSafe outlets; they are corded sockets that can at the same time accept block type plugs without covering other outlets.

The PRO 650 version features a total output power capacity of 410Watts compared to the Standard 650 version that offers 400Watts, not a very big deal, but should be of concern when investing the 100$ extra for the PRO version. Another technical feature that is definitely worth mentioning is the use of a newer and improved battery. The older brother (650) required over 11 hours in order to fully charge the battery; the PRO version requires anything from five to hours for a full

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