Battery type: Li-Ion - no memory-effect Capacity: 2500 mAh Voltage: 18 V Energy: 45 Wh Number of cells: 5 Weight: 261 g Compatible with the following device models: Flymo Robotic Lawn Mower 2018 Replaces the following original accessories: Gardena 505 69 73-20 Gardena 574 47 68-01 Gardena 574 47 68-02 Gardena 574 47 68-03 Gardena 586 57 62-01 Gardena 586 57 62-03 Gardena 586 57 62-04 Gardena 589 58 61-01 Husqvarna 574476801 (5744768-01) Husqvarna 586576201 (5865762-01) Husqvarna 589586101 (5895861-01) .