DS> I think I have 3 of the BK-1500's...but don't know the exact model   
   DS> number offhand. But, as expensive as they were, I hope to just replace   
   DS> the batteries when the time comes.   
      
   If you want to save some money and still get quality replacement UPS   
   batteries, check out www.chromebattery.com.  Made in the USA and they do   
   last.  I have used them in all my APC UPS units for many years.   
      
   I typically pay around $55 for replacement batteries for my APC-1000 unit   
   which includes free fast shipping.   
      
   - Mark   
      
   --- WWIVToss v.1.51    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)