APC ES 700 - New Battery / Overloaded

[Anonymous user]

Hi there,

Is anyone able to help me? I've owned an APC ES 700 for over four years and it has been brilliant! Saving my Synology from several powerspikes and power outages at home. I'd to keep it going if I can.

A few months ago, it seemed to die a death, with a long continuous squeal. So I shutdown everything and diagnosed that I probably needed a new battery; it didn't seem to hold charge.

I purchased a new battery, from what I believe is a genuine supplier and plugged it in yesterday. Allowing it all to charge up (its been 24hrs).

If I press on a single time, I see or hear nothing. No light, no sound. However, if I hold the on button down for a few seconds. I get a double beep, a green light (for a second) and then a continuous noise. Further to this, Powerchute then reports the backup device is overloaded.... but there is nothing plugged in.

In the powerchute software, it states that i have 100% battery, but it is discharging!

Is there any hope for the device? Given I need to get this up and running to protect my NAS and I'm now self-employed, I'm tempted to go out and buy another. However, before I potentially waste money, is there anything else I can do?

Thanks and appreciation to anyone willing to try to help.

Kind regards

Dan Truong

[Anonymous user · Accepted solution]

You can try what APC calls a "braindead" to try and reset your UPS. Unplug it from the wall, disconnect the battery and hold down the power button for a few seconds. The UPS may react briefly.

Wait about a minute and reconnect the battery. Plug the unit back into wall power and try turning it on.

If this fixes the problem, everything will probably be fine for years to come. Unfortunately, I don't expect that it will. There probably has been a failure within the UPS itself. You could also try taking the UPS to another location, in case it's trying to tell you of a possible problem with the AC line power at your current location.

You can also check the battery with a DC voltmeter if you happen to have one. I would expect a "good" battery to read at least 12 volts DC and ideally a bit more than that. (Also note that this test doesn't put the battery under any appreciable load. Weak batteries can sometimes pass it.)

Genuine APC batteries have a serial number that includes a date code. The four digits after the first two letters of the code indicate year and week of manufacture.