Samsung SCH-i600 / SP-i600

I have one question about my new i600 and maybe someone can help. I'm using the slimline battery and the battery meter goes down to 1 bar when there is still about half the juice left in the battery. I can live with that, but the thing that's driving me crazy is the damn alarm that keeps going off every 10 minutes or so telling me the battery is low and needs to be charged. I've been through every setting the phone has to offer and turned off all the sounds and alarms, but still got no luck in preventing the alarm from sounding. Can anyone help here?

Thanks in advance.