Lucky you in Qatar, here in USA,my dealer would have charged atleast $750 as storage fee for a month..

 

just connect one of those float chargers to the battery. they're meant to maintain the battery but can't charge a dead one. they're real cheap so look around.

or you can pay a little bit more and use a regular battery charger. i have one that i paid twenty something bucks for and it switches to float mode after the battery is fully charged.