Amazon.com: PS-12180NB 12v 18Ah Lead Acid Battery 12VOLT - PACK OF 2 : Automotive
Amazon.com: DS18 INF-18 18 AH 750 Watt AGM Power Cell 12 Volt Battery - Maintenance Free - Great Compact High Performance Battery for Car Audio, Motorsports, Motorcycle, Jet Ski, ATV and UTV -