I purchased this brand new battery this week. I realized it was the wrong battery for my plane only after I had added the acid and charged the battery. The battery was charged with a Gill Battery Charger in accordance with Gill's instructions. My loss is your gain. I paid $406.21 for this battery at Aero Alaska on 4-14-17 and will take $300 for it. Can deliver anywhere between Talkeetna and Homer as I will be driving down and back.