( 2 reviews )
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Posted: Jul 20 2008
This unit works well, of course. What really sets it apart from lesser brands is that you can buy an external battery for it which increases the hold up time at max load from a few minutes to well over half an hour. APC has a "hold up time" chart on their web site that shows hold up time vs load for the base unit, with one external battery, and with two external batteries. Amazon didn't carry the external battery, so we bought that directly from APC. We really needed the hold up time, so the ability to connect an external battery was required. Works exactly as we hoped.
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( 7 of 7 found this review helpful ) Posted: Dec 19 2006
This product is woefully under-appreciated, and often overshadowed by APC's "non-XL" Smart-UPS models. (For example, the popular Smart-UPS 1500VA, model SUA1500.) The non-XL Smart-UPS models are great products, but they lack one key feature of the XLs: expandable battery capacity. Said expandability allows one to daisy-chain up to 10 (!!!) external battery packs -- model SUA24XLBP, product name "Battery Pack for Smart-ups 24v Black" -- providing an amazing amount of potential runtime! Beyond the expandable battery capacity, the Smart-UPS XL series has all of the same features -- and the same outstanding power filtering/protection -- as the non-XL Smart-UPS models. That includes "line-interactive" operation, which provides true Sine Wave output -- and virtually no delay when switching to backup power. Another notable feature: the Smart-UPS XL series can be used when running on power provided by a backup generator. Inexpensive UPS models cannot! And finally, there is an important thing to know relative to the load capacity of the Smart-UPS XL 1000VA. While this product is rated as providing 1,000 VA (volt-amps) of output power, the "real" capacity is 800 Watts. By comparison, the non-XL-series Smart-UPS 1500VA has a capacity of 980 Watts. The point? The Smart-UPS 1500VA does not have 50% more load capacity as you might expect. And the Smart-UPS XL 1000VA is darn close! The bottom line? You cannot get better power protection -- or more expandability -- without paying significantly more!
