The batteries are integrated in such a way that their weight has no noticeable effect on handling.Related ArticlesHow many watt-hours does the Bosch DualBattery have?How does the Bosch DualBattery work while riding?With the Bosch DualBattery technology, is it possible to ride with just one battery?What do I have to consider when riding with Bosch DualBattery?Can I ride twice as far with Bosch DualBattery?