The 12Ah battery can be used on all EGO products*. It enables operators extra runtime without the need for multiple batteries. The BA6720T is ideal for use by professionals in conjunction with the backpack harness BHX1000, optimising user comfort. All new EGO batteries have a gauge indicating the remaining battery capacity. Each segment represents 20% charge meaning that users can now plan their work based on the charge required to finish the task.The 12Ah battery builds on EGO’s market leading battery technology while maintaining great user benefits. The technology used in the EGO Power+ system breaks the mould. It begins with the industry's first 56 volt lithium-ion powered battery. Unlike other battery packs, which are shaped like bricks, EGO follows a patented 'arc' design which helps to dissipate heat. Inside, EGO has developed an advanced power management system and its proprietary 'Keep Cool' cell technology works with each battery to maintain long-term power and unmatched performance. The EGO Power+ system also boasts a class-leading charging system. In just 30 minutes, an empty 4.0Ah battery can be fully recharged using the Rapid Charger - another first in the lawn and garden world. Power Beyond Belief starts with better technology. That's what puts EGO's power, performance and durability on a whole new level. * Not compatible with LM2000E.