New APC UPS battery charging yet drops charge %

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.

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.

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

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.

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.

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

Mark