Check the listing for details. Vibration Audio 90ah CMAX- READ DESCRIPTION!. Condition: New. Listed at 1710.00 USD. PLEASE SEE OUT WEBPAGE FOR CHEAPER PRICING! SAVE $300 ordering direct❗️❗️❗️❗️ financing available. Vibrationaudio . Net Vibration Audio “CMAX” Panasonic Banks Thank you for choosing the Vibration Audio “CMAX” banks! This is a high quality, completely assembled in USA lithium battery using high energy dense Panasonic cells. 90ah Rating: 20,000 watts with 600 amps of charging. Dimensions: 23” x 14.5” Our ratings are tested at 15.5 volts with a musical test tone. Dropping from 15.5v to 15.3v. You can consider them underrated because you can pull well over rated power out of them but would drop to lower voltage. Requirements: Working voltage 14.8v-16.6v (the battery will preform better at higher voltage) DO NOT MOUNT ON METAL SURFACE. Always mount on wood or acrylic. You must “delete” the OEM battery from the vehicle when installing. DO NOT JUMP BATTERY. What is a battery delete? It’s as simple as said. Most people build a simple box, the size of the OEM battery. Put a positive and negative terminal on it. Then hook it up as if it was your OEM car battery. Pretty easy! We offer a 1 year manufacture warranty on all batteries!