Amazon.com: Battery 12 Volt 35AH Marine Deep Cycle HI Performance Battery Ideal for Boats and 18-35lb Minn Kota, Minnkota, Cobra, Sevylor and Other Trolling Motor (12V 35AH, Group U1) Beiter DC Power :
Deka 12-Volt 410-Amp Mower Battery in the Power Equipment Batteries department at Lowes.com