On 4/14/2011 2:13 PM, m.roth at 5-cent.us wrote: > >> Keep in mind that pretty much all of them that don't have multiple >> battery/control modules and auto-switching (like the big APC Symmetra's) >> will have their own failure modes 3 or 4 years out if you just plug >> them in and forget them. That is, they will cause downtime even if you >> don't have a power failure. > > *shrug* You run the self-test every so often, or have apcupsd do it. In > any case, when the "replace battery" light *first* goes on, order new > ones, and replace 'em when they come in. I think we've had many where the "replace battery" light never came on until after they had dropped power. -- Les Mikesell lesmikesell at gmail.com