Internal temperature is 50C?

[Anonymous user]

Hi,

I have a smart ups 750. on battery it's internal temperature is 50c or 120F. is it okay or should i worried about it?

[BillP]

Hello,

50ºC is a touch high but not concerning if the UPS is running on battery with a load. I would just make sure you do your best to make sure the UPS is well ventilated and the ambient temperature around it is somewhere around 20-25ºC ideally. This will also help the longevity of the battery itself. If the battery is older, I would do a visual check on it to make sure nothing is going on.

You can also review your PowerChute or Network Management Card data log to see the history of this figure to see if it has risen sharply recently.

[Terry_Kennedy_apc]

How old is the UPS? The 3rd and 4th characters in the serial number are the year of manufacture.

If it is running this hot and is not either running on batteries (utility power failure) or recharging the batteries after a recent power failure, I'd be suspicious that something is going on that may cause trouble down the line. I agree with Angela that it would be a good idea to visually inspect the batteries (normally there's an access plate behind the front panel, but consult the manual for your specific model). Take caution as they may be quite hot. If there is any sign of swelling:

you will want to replace the batteries (if you can get them out of the UPS). This sort of swelling can be caused by a problem in the battery or by the UPS drifting out of calibration (which is different from the "runtime calibration" and requires doing things not recommended or supported by APC to adjust). But before we get to that, take a look at your batteries.

[Anonymous user · Accepted solution]

Thank you for your reply.

The model is SUA750. Ambient temperature is around 25-30ºC. I have visually checked the batteries these are cool but only ups is touch high. On battery and On line temperature is almost same around 48 to 49, please see bellow image: