Electronically test battery and charging system performance. Battery must be installed in vehicle for test. Valid on most vehicles with battery positioned under hood in engine compartment. Offer valid on most vehicles. See store for complete service details. No cash value. Valid only at AAA – The Auto Club Group owned and operated Car Care locations. Applies to most vehicles. Must present coupon at time of purchase. One coupon per customer. Not valid with any sale price or other discounts on same service.