I have a 2007 platinum.  It has 2 batteries that continually go dead after about a week or 10 days even with the switch to off in the battery compartment.  Is this just bad batteries or is there something else I can do to maintain the charge without plugging it in.  It has always done this..

Thanks...

Are the batteries original equipment?  2012-2007 means they are 5 years old.  They may be in the last stages of their productive life.

Check for a leaky current as mention above. But at that age, I would be thinking of new batteries

These are easy to install and prevent a dead battery, caused by parasitic loads during extended storage:

http://www.amazon.com/gp/product/B001HSBW74/ref=pd_lpo_k2_dp_sr_3?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B00099YOV8&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=15J0SEDPH2B4ZAFW0ANX