Back-UPS ES 750

[Anonymous user]

My 4 year 2 month old APC Back-UPS ES 750 using Powerchute 2.0 Firmware revision: 841.I2 .D will only charge to 98% and after being on for about 30 mins goes down to 91% and always says charging (see attached). Windows 7 Home Premium. I have un/reinstalled the software but I did not let the battery run down. Can this be a false reading? or Do I need a new battery? I have read in other posts that I may have to recalibrate the unit, I will do this if I have to but if a false reading I will probably just ignore. Also if it's always saying charging is that affecting my electric bill with it using more? THE APC website says my model # is invalid, I do see other APC 750's but is the Back-UPS ES 750 just a old model? I can get an entire new unit for $80 on Amazon.

Message was edited by: Animal5150

[BillP]

The BE750G is the replacement for the BE750BB. We have not made the "bb" in a while so we would of course recommend the "G" version.

[Anonymous user]

I have not yet replaced the battery and I do realize that I may need to after 4 years. I am going to try the updated software (thanks for that link) will it install OVER the older version or should I uninstall the old first? THE website says my exact model # is invalid, will any 750 model battery fit? such as:
http://www.apc.com/tools/upgrade_selector/index.cfm OR is my model# old? I am asking because as I stated I can get a brand new unit for $80. in the link above enter: BE750BB as the model #, will THAT one fit?

Message was edited by: Animal5150

[BillP]

Have you replaced the battery since you've had the ups? Our batteries do have a lifetime of 3-5 years so you may just need a new battery.
I'd also recommend using the latest software in case the software is reporting it wrong.

http://www.apc.com/tools/download/index.cfm

[Anonymous user]

Well I installed the latest PowerChute software. I do like the new features and it finally disabled the native Windows power alerts. It IS still reading 98% charging and does not seem to go above that. It passes the self test. Although I do plan to get a new battery or entire unit this year some time IF it's saying 98% charging is this actually charging all the time and running up my power bill?

[Anonymous user]

One last bump if anyone can answer

[BillP]

You need to replace the battery

[Anonymous user]

Ok thanks will do. In the mean time IS it ACTUALLY charging all the time running up my electric bill? It does say 98% Charging. (see attachments below) Will any 750 Battery fit my model listed OR am I better off just getting a new unit since mine is older? APC web site lists a battery for Unit APC Model #: BE750BB for $69 but I can get a APC BE750G New for $85. Is the APC BE750G a newer/better unit?

Message was edited by: Animal5150

[BillP · Accepted solution]

The Ups Uses A 12volt 12 ah battery

Message was edited by: Wwallender