I wonder if you are correct? what if they totally changed the way the battery was fitted to the frame with no need for a bash guard? Maybe like an updated version of the Trek rail perhaps?Jus had a look & the current 36 volt levo 700 watt/hrBattery looks to weigh 3.977kg
The Brose 48 Volt 814 watt/hr battery weights 4.0kg
Not sure if the 700 battery weight includes bash guard etc but it looks like the new 48volt 814 battery only weighs 23grams more