Buying a DC fast charger is not just about kW rating. The right unit depends on vehicle types, dwell time, grid capacity, climate, connector standards, and total cost of ownership.
1. Match Power to Vehicle Acceptance
Check the maximum DC charge rate your vehicles accept. Installing a 360 kW charger for vehicles limited to 80 kW wastes capital. Match charger output to the fleet’s average and peak acceptance rate.
2. Consider Connector Standards
Choose connectors that match your market and fleet:
- Europe / Middle East / parts of Asia: CCS2
- North America: CCS1
- China / several Asian markets: GB/T
- Legacy Japanese EVs: CHAdeMO
3. Account for Climate and Cooling
In hot climates, air-cooled chargers derate after 15–30 minutes. Liquid-cooled chargers maintain continuous full output in 45°C+ ambient temperatures.
4. Check Software and Network Compatibility
Ensure the charger supports OCPP 1.6 or 2.0.1 for network roaming, load management, and remote diagnostics. ISO 15118 Plug & Charge is increasingly important for public networks.
5. Calculate Total Cost of Ownership
Include hardware, shipping, installation, grid upgrades, maintenance, cooling, and downtime. A cheaper charger that throttles in heat can cost more over five years than a liquid-cooled unit.
6. Plan for Future Growth
Choose modular or scalable systems if you expect to add ports. Group charging systems allow multiple vehicles to share available power dynamically.
Need help specifying? Explore KIWI EV DC fast chargers or request a technical consultation.