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HUB 05 · Guides & Buying Advice

Charging a BMW i4 at Home

The i4's 11 kW onboard charger makes a 48-amp unit the right pick — here's the setup, through BMW's move to NACS.

By Stephen V.Updated How we research
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The BMW i4 charges at home over AC with an 11 kW onboard charger, so a 48-amp Level 2 chargerlets it draw its full rate — roughly 35 miles of range per hour. Home charging is standard; the connector is the part that changed with BMW's move to NACS in 2025.

The i4 is a straightforward car to live with at home: a generous onboard charger, a normal 240-volt circuit, and a clear match to a good 48-amp unit. Get the connector right for your model year and the rest is simple.

The connector: CCS1 before 2025, native NACS after

Pre-2025 i4s use a CCS1 inlet, which accepts a J1772 Level 2 connector natively — any standard J1772 home charger works with no adapter. 2025 and newer i4s have a native NACS port; those charge at home with a NACS home charger, or a J1772 charger plus a J1772-to-NACS adapter. The shape of your charge inlet tells you which you have.

What amperage to buy

Because the i4 accepts 11 kW, a 48-amp chargerlets it pull the full AC rate. That needs a 60-amp circuit — confirm your panel via the wire size and breaker guide. A 40-amp charger such as the Emporia Level 2 still refills the i4 overnight for any normal driving if a 60-amp circuit is not available.

Hardwire or plug in?

A plug-in charger on a NEMA 14-50 outlet caps at 40 amps; hardwiring unlocks the full 48. For an i4 kept long-term, hardwiring a 48-amp unit uses all 11 kW. If you value the flexibility of a plug, a 40-amp portable is only modestly slower and moves with you.

The gear

Recommended gear for this guide

The products this guide refers to, with prices pulled live from Amazon and dated on each card.

  • Emporia Emporia Level 2 (48A)

    Most people who want the smart features too

    Emporia Level 2 (48A)

    The smart charger that does not charge a smart-charger premium — 48-amp capability and real energy monitoring for the price of a dumb one.

    $449.00Amazon
  • LENZ LENZ J1772 → NACS Adapter

    A Tesla / NACS car using J1772 chargers

    LENZ J1772 → NACS Adapter

    A UL-2251-certified J1772-to-NACS adapter — the one a Tesla or a 2026+ NACS-port EV needs to use the huge installed base of J1772 chargers.

    $29.99Amazon

#ad · As an Amazon Associate we earn from qualifying purchases.

Questions

Frequently asked

What amp charger is best for a BMW i4?
A 48-amp charger lets the i4 use its full 11 kW onboard rate, which needs a 60-amp circuit. If your panel can't spare that, a 40-amp charger still fills the car overnight for normal driving.
Does my BMW i4 have a J1772 or NACS port?
Pre-2025 i4s use CCS1, which accepts a J1772 charger natively at home. 2025 and newer i4s have a native NACS port — those use a NACS home charger or a J1772 charger with a J1772-to-NACS adapter. Check your inlet shape.
How fast does a BMW i4 charge at home?
On a 48-amp Level 2 charger pulling the full 11 kW, the i4 adds roughly 35 miles of range per hour — an overnight charge easily covers a large top-up. A 40-amp unit is only slightly slower.
Can a BMW i4 use a Tesla Supercharger?
A 2025+ NACS-port i4 uses Superchargers natively; a pre-2025 CCS1 i4 needs a NACS-to-CCS DC adapter at compatible sites. That is DC road-trip charging, separate from the AC charger in your garage.

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