Two sizes available, 4kwh is the standard size and is what comes with the SP140 by default, and is the 1hr flight time pack (The recommended size for high thrust setup, or heavy tandem flights). The 2.2kwh battery is the half-size option. The 2kwh battery is 15lbs lighter and 1/2 hour flight times.
Current shipping time 160 days
Get a $400 discount if you are buying an Sp140 or currently own one. Please contact use for the coupon just please attach your order number.