Description Our most powerful 12V Pro Lithium battery, engineered for demanding applications with multiple power adders and full aftermarket ECU support. Alternator-friendly and built to deliver exceptional cranking performance and deep reserve capacity. Comes With Pro Lithium 12V Battery Charger 4a (We Highly Recommend using the charger provided to avoid battery issues or failure) *Note the battery will only work with lithium battery chargers. Specifications: Voltage: 12V Capacity: 40Ah Cranking Amps (CA): 1400 Cold Cranking Amps (CCA): 1100 Max Charge Voltage: 14.6 ± 0.1V Chemistry: LiFePO₄ Terminals: 3/8" thread posts Group Size: 25 Weight: 14 lbs Dimensions (L × W × H): 9.1″ × 6.9″ × 7.5″ Warranty: 5 Years (We are not responsible for battery failure or issues caused by not using the recommended charger)