8 amp hour (AH) battery upgrade kit comes with battery, cover, and strap to replace original 5 AH battery. 
 
Click HERE to watch our video showing how to replace the battery in a 435X or 535AWD Automower
 
**WARNING!!! We will NOT provide support or answers as to why the battery you purchased somewhere else will NOT work with your Automower. This is an OEM battery upgrade kit, but we can not help you if you purchase this same kit elsewhere and your Automower refuses to recognize it. We can only stand behind what we sell. This product is currently only available for customers in the 48 contiguous states. If you have questions pertaining to this battery kit and if it will work for your 435X or 535AWD please send an email to techsupport@RoboticMowerServices.com along with your mowers SKU, serial number, and date of purchase. Please do not contact us just to as k why the kits purchased from us work and the same kits purchased elsewhere do not. Thank you!**
 
Previous part numbers:
593247101