Question 1

Is this a good replacement battery for my APC back ups pro650?

Accepted Answer

You can find the appropriate replacement battery for your UPS at APC's website (Do a web search for "American Power Conversion" to find their website).  You should double-check the following, but the correct battery for a Back-UPS Pro 650 appears to be a RBC4.  The RBC110 is a different, smaller battery.

Question 2

Approximately what is the lifespan of this battery with everyday use, with an average PC and 23 inch LCD monitor?

Accepted Answer

The battery that came with it lasted about 3 and a half years. The replacement has been in there over two years with no problem. (Desktop PC and 17 inch monitor which I changed to a 23 inch monitor about three years ago.) I'm satisfied with the battery life. I have a bigger battery backup on my 61 inch HDTV, and the batteries in it last about the same amount of time.

Question 3

Does this battery have an F1 or F2 terminal?

Accepted Answer

According to one website: "Your APC BACK-UPS ES BE550G requires 1 replacement 12V 9AH UPS battery with an F2 terminal."  I don't recall from memory, but you can double check this online by search for the terminal type for that battery.

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