EV Charger Buying Checklist: 10 Things to Check Before You Buy
Before buying a home EV charger in Australia, check 10 things: (1) your power supply type (single or three-phase), (2) cable run distance, (3) switchboard age and capacity, (4) charger power level needed, (5) solar integration if applicable, (6) smart features and app quality, (7) warranty (minimum 3 years), (8) OCPP compliance for future-proofing, (9) installer credentials and license, (10) always get 3 itemised quotes before committing.
Key Takeaways
- •Check your power supply type (single or three-phase) before choosing a charger.
- •Measure the cable run from switchboard to charger location. Every metre adds $10-$20 to installation cost.
- •If you have solar, choose a charger with solar diversion (Zappi, Evnex, Fronius, ZJ Beny).
- •OCPP compliance future-proofs your charger for smart grid and energy management integration.
- •Always get 3 quotes from licensed electricians. Installation quality matters more than the cheapest price.
In this guide
The 10-Point Checklist
1. Check your power supply type. Single-phase (most homes) supports up to 7.4kW. Three-phase supports up to 22kW. Full guide on single vs three-phase.
2. Measure the cable run. Walk from your switchboard to where you want the charger mounted. Every metre of cable run adds $10-$20 to installation cost. Under 10m is standard; 10-20m adds moderate cost; 20m+ may need a sub-board.
3. Check your switchboard age and capacity. Open your switchboard. Ceramic fuses = upgrade needed. Circuit breakers with spare slots = probably fine. Full switchboard guide.
4. Choose your power level. 7.4kW (single-phase) is enough for overnight charging for most drivers. Only invest in 22kW if you drive 100+ km/day or have two EVs.
5. Check your EV's onboard charger. Your wall charger cannot charge faster than your EV's onboard charger allows. A 22kW wall charger on a car with a 7kW onboard charger still only charges at 7kW.
6. Decide on solar integration. If you have rooftop solar, a charger with solar diversion (Zappi, Evnex, Fronius, ZJ Beny, Autel) can charge your EV for free. Solar charging guide.
7. Consider OCPP compliance. OCPP (Open Charge Point Protocol) means your charger can integrate with future energy management platforms. Evnex and Autel have OCPP 2.0.1 (latest); Wallbox, Ocular, ABB, ZJ Beny, Ohme, CTEK have OCPP 1.6.
8. Check the IP rating for outdoor installation. IP65 is fully weatherproof (outdoor rated). IP54 is splash-proof (best under cover). If your charger will be exposed to rain, choose IP65.
9. Compare warranty terms. Ranges from 2 years (ZJ Beny) to 5 years (Ocular). Longer warranty = less risk. Some brands offer extended warranty for an additional fee.
10. Get 3 quotes from licensed electricians. Prices vary significantly between installers. Ensure each quote includes: charger unit, dedicated circuit, RCD protection, switchboard assessment, and any necessary upgrades. Get free quotes here.
Red Flags to Watch For
Avoid installers who:
- Quote without inspecting your switchboard (in person or via detailed photos)
- Cannot show a current electrical contractor licence (REC)
- Suggest installing without a dedicated circuit or RCD protection
- Offer unbranded or uncertified chargers at suspiciously low prices
- Pressure you to decide immediately without a written quote
A quality installation by a licensed electrician protects your home, your EV, and your warranty. The cheapest quote is not always the best value.
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