The battery technology of the 24 eCitaro – eleven solo and 13 articulated buses – is based on the second-generation nickel manganese cobalt cells (NMC). The advantage here is that they are suitable for both depot and high-performance charging. All of the electric buses are fitted with all the very best safety equipment Daimler Buses has to offer. This includes Sideguard Assist which assists the driver when turning and the new Preventive Brake Assist which is the first active braking assistance system for city buses in the world. The driver cockpit also provides preventive protection: a driver's cab with a large pane of safety glass protects the driver from viral infections and violence. The air in the bus is kept clean using active filters with an anti-viral function. Video monitoring is another safety system on-board. In the articulated buses six cameras monitor the bus interior while the solo vehicles are fitted with four cameras.