The circuitboard may come out of its slot and there are a couple other cables that may become disconnected as you separate the halves, but don’t worry about that–I tell you how to re-assemble it later.

You will need to feed the positive and negative cables through the slot they feed through the lower case. They are located deep in the holes as follows:īe careful not to lose a screw as they will fall out and hide if you’re not careful. How to Replace the Battery in a APC Back-UPS ES 500 Battery Backup Step 3: Remove the 5 phillips-head screws from the case. I have detailed the steps to swap out the battery on the post below: Step 2: Flip the APC over and remove the battery. Replacement battery for APC Back-UPS ES 500 (optional).APC Back-UPS ES 500 (discontinued, but get the current 550 model here ).Soldering Iron, I used a high powered gun-style soldering iron.Phillips Screwdriver (If you don’t have one get a good set of them here ).Here’s how you do it: How to Permanently Disable the Beeping Alarm on an APC Back-UPS ES 500 Battery Backup When the power goes out (or the batteries go bad), these APC’s let off an obnoxious piezo-electric beep-beep-beep, which is not cool to your wife when it wakes up the napping kids!!! I’ve read that you can disable the alarm with the windows software but I’ve not had any luck linking it up with an APC and I’m a Mac user anyway so I just wanted to permanently disable the alarm. The problem is, I have small children whose rooms are right above this room.

I wanted to take a recently repaired APC Back-UPS ES 500 Battery backup (I replaced the battery) and have it provide backup power to my AT&T U-Verse modem and wireless access point. If the Back-UPS came with a PowerChute CD, insert the CD into your computer and follow the on-screen instructions If the Back-UPS did not come with a PowerChute CD, go to and download the software free of charge.An APC Back-UPS ES 500 that needs a little modification Installation Use a USB cable to connect the Data port on the rear panel of the UPS to the USB port on your computer. See the documentation provided with your computer. If you are using a Mac OSX, use the native shutdown feature to protect your system. Note: PowerChute is only co mpatible with a Windows operating system. Monitor the UPS for power usage and power events. Configure the UPS to use features su ch as power-saving outlets, shutdown configuration, and alarms. When power is restored, it will restart the computer. During a power outage, PowerChute will save any open f iles on your computer and safely shut it down. Protect your computer and ot her equipment during a power outage. ® Personal Ed ition Software Overview Use PowerChute Personal Edition software to configure the UPS settings.

Apc be 550g