New APC UPS battery charging yet drops charge %

Jul 28, 2006 6 Replies
E

I have had an APC 500 UPS for years. The battery started giving warnings that it needed replaced. I didn't listen right away and eventually the old battery caused problems. I ended up loosing two PSU's and having flaky results on my WIFI AP until I realized the problem was the UPS. So I removed the UPS.



I replaced the APC 500 UPS battery with a battery direct from APC. I let it charge for a day before putting it back in. It is now back in place and running. The APC software asked me if I replaced the battery and I selected that I had.



Now the battery is going from 100% charged down. Right now it is at



78% and dropping slowly. Is this normal calibration? I can't find anything about this on the web. I am worried that this is not normal and there are additional problems with the UPS.
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M

If I remember correctly, APC units do tend to do this during a calibration test, and it takes a while too, although I cant remember exactly how long. I noticed this problem too when I installed an apc unit and spent a few hours trying to get hold of apc to find out that this was indeed normal calibration. It should recharge again after it hits 0%. I wouldnt count on it for backup power purposes until it finishes its calibration though.

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M

Oh and by the way, if you disconnect the power to the UPS during the calibration, I seem to recall it will charge the battery to full and restart the calibration.

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E

Your right. That's what it did. It's now back to 100% and running normal. Thanks.

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^

Good, glad I could shed some light on the matter :)

p.s. please do not respond to this g-mail account - I never read it, probably have 54839589380 spam messages waiting for me.

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E

Same here. That's about all I use this gMail account for - posting here. And signups with things that I thing will result in spam.

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M

May aeons ago I did actualy pride myself in having a gMail account at one time, and then the novelty wore off (within about a week). It's just whilst I was away from home yesterday I had little choice but to use google groups (although I supposed I could have used outlook express

*shudder*)

Mark

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