On 1/29/2010 2:53 PM, m.roth at 5-cent.us wrote: > Idiot "change battery" led stays on. By chance, I just did an RBC 23 change the other day. The docs I got with it said to let it charge for 8 hours, then do the self-test. On my UPS, that means holding the On button for a few seconds. (A single regular press does nothing but make it beep, if it's already on.) You might also want to write the battery change date to the UPS. I don't know if it will affect the light, but it'll help you figure battery life when it comes time to change them again years from now: # upsrw -uadmin -s battery.date=01/29/10 apcrm at localhost Adjust names as appropriate.