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Date: Fri, 28 Nov 2014 10:28:54 -0800
From: Darren Pilgrim <list_freebsd@bluerosetech.com>
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On 11/28/2014 10:22 AM, Paul Pathiakis via freebsd-questions wrote:
> I agree with Warren on this, I've done the same.
>
> The only issue with this is the proper disposal of the old batteries.

Lead-acid batteries are recyclable.

> from their web site, under the SMT750 Features page:
>
>    * Pure sine wave output on battery:Simulates utility power to provide
>      the highest degree of compatibility for active PFC (power factor
>      corrected) servers and sensitive electronics.
>
> "Simulates" utility power.  This is the sneaky little bit of marketing.
> Saying it's sine output....  It is, but it's simulated.  I've been roped
> in by the APC marketing machine previously.

Rather than trying to read between the lines and conjecturing, hook one 
up to an oscilloscope.  It's a sine wave.  The waveform I get out of 
mine (I have whole lot of SMT-series units) is actually *cleaner* than 
the mains power.