Update: I replaced the batteries today, and indeed, several of the old
ones (mostly in the first pack) were split and some had popped a couple of
their "sealed" tops.
I left for several hours and came back to the house stinking like burning
rubber. The new batteries are apparently melting the terminal rubber
insulation. I had to throw it back into bypass mode and unplug that pack
(the only one with new batteries!)
Any ideas to the cause? The status screens looked ok. ("no bad batteries"
again)
James Smallacombe PlantageNet, Inc. CEO and Janitor
up@3.am http://3.am
I left for several hours and came back to the house stinking like burning
rubber. The new batteries are apparently melting the terminal rubber
insulation. I had to throw it back into bypass mode and unplug that pack
(the only one with new batteries!)
By "terminal rubber insulation" do you mean the insulation on the lugs
that bolt to the terminals on the batteries? If so, this is a sign
that you either didn't clean the contacts or didn't bolt them together
firmly. Those batteries need to be initially charged, and they draw a
lot of current when doing that... which heats up any kind of high
resistance connection in the chain.
Any ideas to the cause? The status screens looked ok. ("no bad batteries"
again)
By the way, you probably ought to replace all the batteries in all
your packs regardless of what the battery status monitor says.
Yeah my other thought here was that one or more of the other packs had totally dead shorted cells, that'd cause excessive heating on the other batteries too.
Update: I replaced the batteries today, and indeed, several of the old
ones (mostly in the first pack) were split and some had popped a couple of
their "sealed" tops.
I left for several hours and came back to the house stinking like burning
rubber. The new batteries are apparently melting the terminal rubber
insulation. I had to throw it back into bypass mode and unplug that pack
(the only one with new batteries!)
Any ideas to the cause? The status screens looked ok. ("no bad batteries"
again)
Tip: Except where a newly supplied battery is faulty, replace all or none - across all your packs connected to the same UPS.
Understood...that's why I unplugged the other 2 XR packs from the UPS.
APC rejected the notion that there was a controller problem, until they
had me perform the battery test, when it not only cut power (batteries
were fried anyway), it stayed in test mode until bypassed. According to
them, even with dead batteries, it should come out within 5-10 seconds.
James Smallacombe PlantageNet, Inc. CEO and Janitor
up@3.am http://3.am