Table: Zap Insurance

MANUFACTURER MODEL RETAIL BATTERY PRICE RUN TIME*

AMERICAN POWER CONVERSION Back-UPS Office 350 $ 75 7 min. www.apcc.com Back-UPS CS 500 $130 18 min. Back-UPS Pro 500 $160 21 min.

OPTI-UPS OPTI-UPS PowerES 420 $130 11 min. www.opti-ups.com OPTI-UPS BackUp-Time 525bt $100 15 min.

TRIPP LITE Internet Office 500 $100 22 min. www.tripplite.com

* Running a Dell OptiPlex GX110 with Pentium III processor (2.0 amp) and NEC AccuSync 90 19" monitor (2.2 amp)

Data: BusinessWeek

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