Second battery can be used on both Segway ES1 and ES2 models. It will expand the range to 45 km for the ES2 and will increase the speed to a maximum 30 km/h. On the ES1 the speed will be increased to 25 km/h. The battery can easily be attached to the stem of the product.

Please note that ES1/ES2 controllers tend to break down with extended battery. To avoid this you need to make sure you do not charge your batteries all the way up to 100%. We recommend keeping them around 90%. Additionally, make sure your battery regeneration setting in the app is set to 'Weak'. Also avoid riding downhill when your battery is nearly full. This will make sure you do not provide more energy to the controller than it can handle.