At the time I picked up my new 721 I didn't know about Mercury requiring AGM batteries for the new 4 stroke. After reading my manual and doing some digging I now know they do and why. The dealer didn't equip the boat with an AGM, they just put a standard 27 series wet cell battery. After contacting them and explaining what I read in the manual and found out they still act as if the battery they put is suffice. I don't agree with this and will ultimately buy an AGM in order to run what is best for motor. Am I wrong to feel that they should supply me with a new appropriate battery in your opinion?