The battery is protected by a sophisticated battery management system (BMS) that constantly monitors every cell to ensure the battery is always optimized for the best performance and life. It is supplied complete with battery lead and a protective neoprene case.
You will note that the lithium battery is supplied with blue/black connectors, whereas your trolley may be fitted with red/black connectors. This change has been made to emphasize the importance of using the correct battery charger with this battery - using the wrong charger could damage the battery.