BEV’s have to have onboard chargers to convert AC to DC voltage when charging from your home charger (EVCP, there proper name). These onbord chargers rang from 7kW to 22kW. Even though most vehicles today come with 22kW on board chargers, it means nothing to the large majority of us. Thats because nearly all homes in the UK have a single phase (1pn) electricty supply, meaning the theoretically maximum of having a 7.4kW home charger. So why do European spec vehicles now come with 22kW on board chargers – simple really as the majority homes in th EU have three phase (3pn) electricity supplies, meaning they can charge 57-75% faster than us.
If your DNO requires you need what is called “minor works” carried out before having a home charger fitted, depending on the works needed it could be worthwhile requesting they install a three phase supply, to future proof your home and take advantage of the faster charging speeds (If the DNO only require your cut out changed from 60a to 100a, its very unlikely they will do it). I ntioned earlier that theoretically the maximum home charger will be a maximum of 7.4kW, however it is possible to have a 11kW home charger installed but, will be subject on your DNO to a harmonic test on your incoming electricity (very rare)
Just to clear up a little bit of confusion on the Hyundai Ionic 5 77kW…
The useable battery size is is 72.4kW, regardless of the said 800V battery the Ionic 5 has a short maximum peak charge rate of 225kW at just below 50% SOC dependant on battery temperature and external influencies. Whils’t you can use 350Kw DC rapid charger it will throttle and the time difference using a 150kW charger is minimal.
The battery conditioning feature used by Hyundai/Kia in the 77kW battery has 50% faster charge time, bringing charging down from 35 minutes to 18 minutes, providing the SOC is 25% and the battery temperature doesn’t drop below 21c.
The Ionic 5 also has bidirectional charging allowing you to charge external device up to 3.6k ( V2H)