Shipment contains 2 Raion Power 12V 35Ah Group U1 replacement batteries for Stand-Aid Power Lift electric wheelchair. Valve regulated spill proof technology enables the batteries to be installed in various different positions. Absorbed Glass Mat Technology (AGM) is maintenance free. We VOLTAGE MATCH your batteries at NO ADDITIONAL COST in addition to shipping batteries from the same manufacturing batch. Voltage matching increases longevity and performance. Specs(per battery): 12V 35Ah , LXWXH = 7.70 X 5.16 X 6.10 Inches, Weight = 23.20 lbs. Our centrally located warehouse enables us to offer fast shipping on all of our products in the United States. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.