Hi all. Went out in the garage this morning. Saw my Schumacher Tender/Charger (SP6) flashing. States "Bad battery" Unplugged and reconnected. Same message. This happened once before. But cleared up when I reset the charger. Guess when it warms up a bit, Have to start the Street and see what happens. I have an old battery. I could try connected it to the charger and see what happens. Its a 5-6 year old battery. Might still be good.