Battery capacity: 15 batteries 98000H Product motor: high-power brushless motor No-load speed: 0~1800r/min Guide plate length: 24.5cm~30.1cm Chain length: 29.21cm~39.21cm Fuel injection system: push-type quick fuel delivery Chain adjustment: quick adjustment without tools Cutting diameter: 0~39cm Press type oil lubrication Use high-concentration engine oil to flow smoothly to reduce wear of parts Upgrade aluminum alloy box Increased thicker aluminum alloy is safer to use Stainless steel chain--body guide Cold-rolled one-piece forged guide plate has long service life and the chain will not break, sharp and more durable