Thanks much, tomplum!
They (LS) likely assume everyone takes their tractor to the dealer to do any battery maintenance, or store for winter etc? My tractor shed is 165 feet from the house and no power there. I talked to my dealer, and he said those tractors were "too new" for them to have service manuals. He "thought" you loosen partway maybe six bolts, and the grill piece is slotted, and slides out. Don't know about the two big bolts at the top. Guess I will find out in early winter when the battery gets taken into my basement garage so it doesn't go dead and freeze, unless I get power out there. I need to bury a 12-2G UF cable to the shed sometime.