Replacement battery for 430XH, 450XH, 550H Automower models. And for 430X, 450X, & 550 models from serial number 191409786.
 
NOT FOR 520 or 520H!
 
If your 430X, 450X, or 550H came equipped with "blue batteries" please watch this video about upgrading your mower to use this style battery. https://youtu.be/ec9bVqYNU44
 
For more information about the difference between batteries click HERE