Ok now, I just picked up my new EGO 21" self propelled mower tonight from the Home Depot. I purchased it as a kit, mower, charger, and the 7.5 Ah battery. Well, when we opened up the box, everything was there except the battery. There was a note taped to the side of the box saying the battery was not shipped. The store I picked it up from is aware of the problem, but I was wondering if the battery is shipped separately due to being made of lithium?