[time-nuts] HP-105B Battery Replacement?

Scott McGrath scmcgrath at gmail.com
Fri Sep 16 04:56:35 EDT 2016

Actually the larger SmartUPS series can run for hours providing a large enough battery string is available     I have a SmartUPS RM3000 running data rack this has 2 external battery boxes and will run everything for 6 hours.

For TimeNuts applications though I'd recommend a Liebert UPS as this is a 'online' UPS as in input is converted to DC and used to float batteries and drive a power oscillator for a true sine output and in a power interruption there is no transfer time or transients on the output

Content by Scott
Typos by Siri

> On Sep 16, 2016, at 3:50 AM, Hal Murray <hmurray at megapathdsl.net> wrote:
> gem at rellim.com said:
>> APC UPS can't handle the longer runtime, but never had a problem with any
>> version of CyberPower.
> There are two parameters for UPS boxes.  One is the power the electronics can 
> handle.  The other is the amount of energy the batteries can hold.
> I think some of the smaller units have inadequate cooling to run at rated 
> power for long, but their batteries are small enough so that they run out of 
> power before the electronics overheats.
> -- 
> These are my opinions.  I hate spam.
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