[Apcupsd-users] help with apcupsd message

[Rich P. <pai...@gm...>]

I replaced an APC Back-UPS ES 650G1 battery in November. I used a 
Duracell 12-9F2 from Batteries Plus. It seems to be an exact 
replacement. I tested it with a high-end tester and it reported 
excellent properties.

I was notified prior to this that the old (original APC battery that 
came with the unit) was in need of replacement. I tested this and found 
it was about half capacity with a pretty high internal impedance.

Recently, I have started to get the following messages from apcupsd:

2026-02-16T03:42:31.494405-07:00 ras2 apcupsd[410]: Battery disconnected.
2026-02-16T03:42:40.495040-07:00 ras2 apcupsd[410]: Battery reattached.

and the log file shows (all of these disconnect messages):

2026-02-16 14:14:36 -0700  Battery reattached.

2026-02-16 14:14:27 -0700  Battery disconnected.

2026-02-16 14:10:29 -0700  Battery reattached.

2026-02-16 14:10:20 -0700  Battery disconnected.

2026-02-16 03:42:40 -0700  Battery reattached.

2026-02-16 03:42:31 -0700  Battery disconnected.

2026-02-15 18:18:51 -0700  Battery reattached.

2026-02-15 18:18:42 -0700  Battery disconnected.

2026-02-10 23:28:18 -0700  Battery reattached.

2026-02-10 23:28:09 -0700  Battery disconnected.

Notice the reattached message is always 9 seconds later! Very Strange!!

The current apcupsd status is

Monitoring: ras2
  UPS Model: Back-UPS ES 650G1
   UPS Name: BE650G1
    APCUPSD: Version 3.14.14
     Status: ONLINE
Capacity 100%
Runtime 705 minutes           (note this is the typical runtime for the load that has existed for many years)

Does anyone have any ideas on why I'm getting this "battery 
disconnected" message? I've checked the leads...

thanks

rich