STIHL recommend the AK 10 battery however

Chassis: Disc with Swing back blades

454-kg load limit with dump angle of 35/40 degrees via a spring-loaded dump latch

Weight: 710 kg

Powerful STIHL 2

Masport President 1500 ST S18 Combo Accessory-Type_Battery STIHL recommend the AK 10This versatile cut, catch and mulch mower featuring a 575EX Briggs & Stratton engine with ReadyStart, removes the need to prime the engine making it simple and easy to start. Cut, Catch or Mulch Powered by Briggs & Stratton Series 575EX OHV 140cc ReadyStart 4 stroke engine ReadyStart no priming required and easy starting 460mm (18") steel chassis Masport 4 Blade Disc System for superior catching due to increased airflow Front 200mm (8") and Rear 200mm