Moddesc:
	<specializations>
        <specialization name="solarBatteryScript" className="solarBatteryScript" filename="scripts/solarBatteryScript.lua"/>
    </specializations>
	
	<vehicleTypes>
		<type name="your vehicleType name" className="Vehicle" filename="$dataS/scripts/vehicles/Vehicle.lua"  parent="xxxxxx">
			...
			...
			...
			...
			<specialization name="solarBatteryScript" />
		</type>
	</vehicleTypes>
	
	<l10n>
		<text name="Battery"><en>Battery</en><de>Batterie</de></text>
	</l10n>
	
XML (optional):
	<solarBatteryScript batteryTime="0.25" showInHud="true" warnSoundFile="$data/sounds/vehicles/reverse_beep/komatsu_reverse_beep_loop.ogg"/>
	
	
	batteryTime (optional) = time in hours battery will last --> default: 0.25
	showInHud (optional) = if true, you get battery status in F1-hud --> default: true
	dieselFillUnitIndex = index of fillUnit which has "DIESEL" as fillType --> default: true
	warnSoundFile (optional) = custom warn sound --> default: "$data/sounds/vehicles/reverse_beep/komatsu_reverse_beep_loop.ogg"