[Elecraft] OT-SLA Battery advice

[Dan Barker]

I have a bunch of 1,200 VA UPSs for my computers. These run two batteries
each. 3 of them have bad batteries. I ordered a case (6 units) of BB7-12 to
fix the bad ones.

The bad UPSs each appear to have one good battery and one bad battery. I
hate to take 3 apparently good batteries to the dump, but I hate to have my
computers crash during the 60 seconds it takes my generator to come on line.

Should I try to match up (How?) the used-good batteries with each other,
discard them, test them (How?) or just dump them in the "Battery" bucket
down at the local Recycling Center?

Dan / WG4S / K2 #2456