Why choose an EarthX lithium battery? S.P.E.E.D. SPEEDY CHARGING- EarthX ETX batteries will charge 2-3X faster than a lead acid battery. P=POWERFUL and LONG LASTING- EarthX ETX batteries crank your engine over easily and will improve your starting performance as their nominal voltage is 13.3V compared to a lead acid which is only 12.6V. Also EarthX ETX batteries life span is much longer than a lead acid battery and can last years longer! E=EXTREMELY LIGHT WEIGHT- EarthX ETX batteries are up to 80 percent lighter than their lead acid equivalents. Lighter weight = better performance! This saves an average of 2-3 lbs. for dirt bikes, 6-8 lbs. for street bikes and 10-20 lbs. for touring and cruiser bikes. E=ENVIRONMENTALLY FRIENDLY- EarthX ETX batteries are environmentally and user friendly. Nonhazardous, nontoxic, nonpoisonous. Will not sulfate, will not corrode, will not freeze, will not boil over, will never need water added and will not spill acid EVER! D=DISCHARGE RATE- EarthX ETX batteries have a much slower discharge rate than a lead acid and the need to charge them is greatly reduced.