APC UPS question

[imported_Salamander]

I just bought an APC UPS (Uninteruptible Power Supply) - the Back-UPS XS-900). I got the battery out on the compartment and then connected the one wire that came unhooked - per the directions. When I first started to connect it, it gave off a small electrical spark. Then I connected it without any further discharges. Is this anything I need to worry about?

Also, the directions say to charge it 18 hours prior to use. Does it really take that long?

 

[mh47g]

Have you ever installed a new battery in a car? Same thing. ...And incase you havn't, yes... it's perfectly normal to spark a little. When it says charge 18 hours prior to use, i'm pretty sure it means before using it during a power outtage.

 

[imported_Salamander]

Thanks!