Filling the gap between mid-range and flagship capacity in XS Power's 12V lithium lineup, the Li-S1200 lithium car audio battery is engineered for builders who demand substantial reserve without the weight penalty of lead-acid technology. Its LFP battery chemistry delivers high max amps with a flat discharge curve, meaning voltage stays strong from the first bass hit to the last.At under 14 lbs for its impressive capacity rating, the Li-S1200 is the kind of lightweight lithium battery that makes weight-conscious competitors rethink what is possible. Use it as a primary or supplemental battery in systems powered by high-output alternators, and appreciate the low voltage drop advantage every time you push the amplifiers to their limits.This Listing Includes: (1) XS Power Li-S1200 12V Lithium LFP Car Audio BatterySpecifications Model Li-S1200 Product Type Lithium Car Audio Batteries Voltage 12V Maximum Amps 4100A Energy 594Wh Lead-Equivalent Cranking Amps 3600A Lead-Equivalent Amp Hours 135Ah Cranking Amps 2400A Amp Hours 45Ah Rated Power 10000W Polarity R Warranty 1 year UPC 692209053446 Package Length 8.94 in. Package Width 7.68 in. Package Height 8.98 in. Package Weight 14.8 lbs. Available from JS Alternators.PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.For more information, visit www.P65Warnings.ca.gov.