the vx125 has been sitting around in the garage for a good 6 months without starting. now a buyer has come (because im selling) and i was looking to make the sale today but couldnt even charge the battery and start the bike. i think the batterys too badly discharged or its ded-out. the buyer's coming back in the morning to collect it. what do you recommend i do? buy a new battery or try an alternative? also which battery fits the gilera runner vx125 05 reg.