When performing PM services, how you you guys load test sealed lead acid batteries?
I'm seeing two schools of thought around here:
Some say to disconnect the AC from the panel and let it sit for one minute, then check to ensure the battery has dropped less than 1 volt.
Some say to disconnect the battery from the panel check the voltage the battery holds at, connect a 1 amp load for a minute, remove the load and ensure the voltage has dropped less than 1 volt.
For the most part I am talking about household systems generally using FA162's-168's or commercial situations using fire rated vista's or first alerts.
Thoughts?