2004 Sprinter FKMS battery over ride ?

[arwenmark]

Does anyone here know if the 2004 Sprinter FKMS has any kind of battery over ride or disconnect?

I know it's a long shot but thought maybe someone has one now or has had that model in the past?

We just brought it home this weekend finally and I think the battery is shot, I have tried charging without any success. If I try to switch on anything battery operated I get a loud beep like a fire alarm, but nothing comes on or works.

So I thought maybe I am missing something that needs to be on or connected or something.

I will be ordering a new battery today as well.

Thanks for any info. you guys can give.