New to the forum. I own a new 2020 Winnebago Boldt on a 2019 Sprinter chassis. I have been using the Sprinter ATT Hotspot in the Mercedes infotainment system which is great. It is powered by the chassis battery so it only works when the engine is on. The hotspot does not work when the sprinter engine is off. Is there any way I can configure the chassis battery to stay on to power the ATT hotspot when the engine is off?