EFB Tech
In addition to AGM technology, there is another type of battery: the EFB (or AFB) series, the acronym of the definition Enhanced (or Advanced) Flooded Battery, a free acid battery with lead-calcium plates reinforced and resistant to the continuous starting required.
In queues or at traffic lights, EFB batteries supply power to all electrical components when the engine is off and reliably ensure the vehicle can be restarted.
N.B. = EFB batteries for Start & Stop applications must be replaced with batteries of the same technology (EFB) or higher (AGM).