Longer runtime - ability      to hold voltage higher for longer allows you to get extended use of      advanced features such as spot lock, autopilot and much more. Why use two      when 1 will do! Lightweight - Less than      half the weight of a comparable Lead based battery Longer Lifetime - more      cycles means cost effective  cost per cycle breakdown Faster charging - get up      and going faster with latest in Lithium technology Charge on the go or on      the tow with the latest in charging technology from Sterling Power B2B Charger allows you      to charge on the go from your engines alternator and top up when moving      between spot - Draws less than tuna tube pump!  Due to the nature of      lithium batteries it is not recommended to run the motor above 80% for      extended periods  or  follow manufacturers guidelines for use      with lithium