[rescue] Any recommendations on rack-mount UPS?
Joshua D. Boyd
jdboyd at jdboyd.net
Mon Oct 12 14:28:55 CDT 2009
Patrick Finnegan wrote:
> On Monday 12 October 2009, Robert Darlington wrote:
>> Consider Liebert. In my circle, APC sells junk. No matter what, if
>> you care about it, I'd go with AGM batteries in the very least.
>> You'll wish you did when the day comes and you need to get the old
>> gel cells out, but you can't because they swelled up and are
>> permanently locked inside the equipment.
> The swollen battery problem seems to be caused by the UPS overcharging
> the batteries. The beige APC units seem to be bad about this, but I
> haven't seen it happen with the newer black units yet.
> I second Liebert, and add Powerware/Eaton. They both seem to have nice
> rackmount units. The only problem I have with the Liebert units that we
> had at work were that replacing the batteries wasn't trivial - you had
> to take the unit 1/2 apart to do it, which involves removing a couple
> dozen screws, and reaching around live battery parts (a 96VDC battery
> string) to disconnect the batteries. Other units probably aren't quite
> as bad.
The Liebert that I removed batteries from was pretty simple. It was
open door, turn a doohickey (not a thumb screw, but something with a tag
to twist, no tool required), and pull the battery out. Nothing to fear
in terms of personal damage, and no tools required.
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