Vehicles.Update.Heater function drains battery when engine running

[Raath]

Poking about in server/vehicles/vehicles.lua I noticed that int he Vehicles.Update.Heater function at line 503 it states : 

 

	if part:getModData().active and vehicle:isEngineRunning() then
		VehicleUtils.chargeBattery(vehicle, -0.000035 * elapsedMinutes)
	end

Should it not be and not vehicle:isEngineRunning() to drain the battery?