| Features | 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  |  | 
  
  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 LED’s. 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 LED’s. 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 UPS’ 
    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. 
  
     
      | Model | Output 
          power capacity  | Typical 
          recharge time  | Back-UP 
          Time (*) | Price 
        ($USD) | 
     
      | Back-UPS 
          PRO 650 | 420W | 6 
          Hours | 44Min, 
          53Sec | $299 | 
     
      | Back-UPS 
          650  | 400W | 11 
          Hours | 35Min, 
          27Sec | $199 | 
  
  *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 
    load. 