Okaya Power is the best place to buy EV charger for EV charging stations. While almost all electric vehicles come equipped with a basic Level 1 (120-volt) portable charger, most EV drivers find the time it takes to get a full charge with this method impractical. The typical Level 1 charger adds approximately 3 to 5 miles of driving range per hour (RPH) of charge, which for most vehicles today means 2 or 3 days to fully charge.