I'd assume what they are referring to is a safety measure of the battery itself. In hot climates (like here in FL), it can get upwards of 140 degrees in your car if left in the sun... thus the windshield covers and tinting are used.
If you choose not to A/C your vehicle, and sometimes even if you do, the battery will stop recharging, or minimize it to a trickle charge, regardless of your regenerative braking or the sort... the reason is to stop the risk of overheating the batteries and damaging the system... because charging/discharging give off heat, and when used heavily (many lights, short distances), coupled with natural heat from the summer sun, it is easy to get into 'thermal cut back'.
I haven't had it this summer, but I did last summer... tinting was added in the interim.
If you choose not to A/C your vehicle, and sometimes even if you do, the battery will stop recharging, or minimize it to a trickle charge, regardless of your regenerative braking or the sort... the reason is to stop the risk of overheating the batteries and damaging the system... because charging/discharging give off heat, and when used heavily (many lights, short distances), coupled with natural heat from the summer sun, it is easy to get into 'thermal cut back'.
I haven't had it this summer, but I did last summer... tinting was added in the interim.
