DC Charging Basics

DC charging is all about fast turnaround. If you have a fleet of EV's and you know there are use cases where:

  • staff are travelling more than the range of the vehicle in a day

  • staff can pop into the office during the day for an hour to recharge

Then a DC charger could be required for your fleet.

There are a few things to bear in mind with DC chargers:

  • Installation costs: these can vary dependant on:

    • amount of energy available at your site (capacity)​

    • distance to the meter board from the charger location (further means more cost)

  • NZ has a mixed fleet so ideally you should choose a DC charger with both CHAdeMO and CCS cables.

  • You can only charge one vehicle with DC at a time

  • Think about purchasing one with an additional AC socket (22-43kW). This enables you to charge two cars (one on DC and one on AC) simultaneously.

  • Location. aside from installation costs ideally you want maximum use from the charger. Dependant on your fleets needs you could for example open the charger to the public, or to other staff at a cost

  • Monetisation: if you do open the charger up for others to use you need to think about cost recovery. The key features here to look for are OCPP (open charge point protocol) enabled chargers with a modem and user identification (RFID/NFC)

  • Energy output: DC chargers start at 20kW and go all the way to 350kW. Matching output to your fleet is critical so you don't over-invest or buy something that's not future proofed.

Recommended Workplace DC Chargers

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919 Victoria Street, HAMILTON

021448107

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