E3.404 - 135 CCA LiFePO4 Lithium BatteryDollar for dollar E3 Lithium is the lightest, most powerful, most economical battery on the market today. E3. 404 delivers 220 Pulse Cranking Amps with a capacity of 4 amp hours but weighs in at a scant 1. 3 pounds! Some of the performance benefits include: 80% Lighter than traditional batteries 3x Longer life than traditional batteries Charges faster than traditional batteries Delivers much quicker starts than traditional batteries IP 66