The product is a new in box lithium-ion battery pack designed to replace the original battery in the Gardena Robotic Lawn Mower R40Li. It has a capacity of 2500mAh and a voltage of 18V, making it compatible with models R38li, R45 Li, R50 Li, R70 Li, R75 Li, and R80 Li. The battery is green in color and measures 3 inches in height and 2.5 inches in width. It is an original replacement part with the model number 505 69 73-20 and is manufactured in China by the brand FGJDFD.