Electric vehicle drivers are being charged more to top up their batteries on long journeys than people behind the wheel of petrol cars pay for fuel, according to new analysis.  The RAC said the average price of using rapid chargers on a pay as you go basis has increased by nearly 26p per kilowatt hour (kWh) since May, reaching 70.3p per kWh this month.  This rise – caused by the soaring wholesale costs of gas and electricity – means drivers pay around 20p per mile for their electricity when using the chargers.