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Hi
replaced car battery with an AA Calcium battery, 3552, for our Smart ForFour, approximately a year or less ago. went to check battery and found fully discharged . Had used car about 1 week before. Could have not noticed inside light on when parked. Unable to confirm as no charge in battery. Projecta, 250B maintenance charger would not start. Assume have deep discharge. Can battery be recoved? Will we need to purchase another one ?
Ray