Gardena Robotgräsklippare Sileno Minimo 500

At first it was brilliant, but now 2 years on it won’t start, even after replacing the battery

Working as expected, but could not connect to iPhone, connected only to Samsung. The bluetooth connection is absolute rubbish, aways disconnects, need to enter pincode on the machine itself. Doesn't climb even a small hill (10 degree is a challenge for it). Otherwise it does its job well.