![]() Simply put, Ferrari needs its cars to reliably perform at high levels for owners who care about driving their Ferraris. Here's an excerpt from the "Battery University" webpage on AGM batteries. It's primarily the ability of AGM batteries to supply ACCURATE voltage at a high constant rate of current matched by an equally rapid recharge rate that justifies its extra cost over standard lead-acid batteries. IMO, it is the constant draw on the battery from the high-revving engine and sensitive electronics (that otherwise throw many spurious fault codes) which warranted the use of AGM batteries in the FF (and the F12). Ferrari and other car manufacturers also provide battery tenders so the use AGM batteries obviously did not obviate the need for Ferrari to spend money on battery tenders to avoid discharged batteries from lack of vehicle use. Starting the engine is a very brief 1-time event over a multi-minute or multi-hour use of the FF so unless it is a HELE car, used in heavy traffic, the current draw from starting the engine is not significant. However, I would note the Interstate Battery text I highlighted in PURPLE in the screenshot I attached above, where it says "Recommended for.high accessory load vehicles.". ^ thank you for your additional insights and comments.
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