On this site, most "best charger for X EV" roundups divide by trim, since amperage differs and sometimes the connector changes between generations. The BMW i4 is the easiest case so far: all trims built to date have the same onboard charger and the same connector, with no exceptions.
| # | Charger | Key Spec | Score | Price |
|---|
| 1 | WenStorm Level 2 Portable EV Charger
Best Portable Pick (No Install) | It supplies up to 32A / 7.7 kW from an existing NEMA 14-50 outlet through a 25-foot cable, and … | 9.6/10 | — |
| 2 | ChargePoint Home Flex
Best All-Around Pick | It fits the 11kW/48A onboard charger found on every current i4 trim, so no capacity is wasted a… | 9.2/10 | — |
| 3 | Autel MaxiCharger AC Wallbox
Best Budget Pick | It reaches the same 48A ceiling as the Home Flex for less money, so you give up no charging spe… | 8.8/10 | — |
| 4 | Grizzl-E Classic 40A
Cheapest Option | The cast-aluminum body is rated NEMA 4 for outdoor use, and at the lowest price of the three it… | 8.4/10 | — |
On this site, most "best charger for X EV" roundups divide by trim, since amperage differs and sometimes the connector changes between generations. The BMW i4 is the easiest case so far: all trims built to date have the same onboard charger and the same connector, with no exceptions.
BMW i4 onboard charger and connector, by trim
| Trim | Onboard charger | Home AC connector | Breaker needed |
|---|
| i4 eDrive35 | 11 kW / 48A | J1772 (CCS1 port) | 60A |
| i4 eDrive40 | 11 kW / 48A | J1772 (CCS1 port) | 60A |
| i4 M50 | 11 kW / 48A | J1772 (CCS1 port) | 60A |
BMW USA's own home-charging and NACS FAQ pages say every 2022-2026 i4 comes standard with a "Flexible Fast Charger" and a NEMA 14-50 adapter, and the car's CCS1 port takes J1772-pin AC charging directly, without an adapter. BMW states that native NACS ports arrive with the 2027 model year and not on the current i4, and that the 2026 i5 M60 is the first BMW with one, on that single trim only. So don't buy a NACS charger for a current i4 hoping to skip an adapter down the road. For Tesla Supercharger access on a 2022-2026 i4, you need a separate Remote Software Upgrade plus a DC adapter, which has nothing to do with the Level 2 home charger you choose.
1. WenStorm Level 2 Portable EV Charger — Best Portable Pick (No Install)
WenStorm Level 2 Portable EV Charger
Best Portable Pick (No Install)
- It supplies up to 32A / 7.7 kW from an existing NEMA 14-50 outlet through a 25-foot cable, and if the outlet is already installed you need no electrician.
- The J1772 version, priced at $219.99 with a 2-year warranty, fits the i4's CCS1 port for AC charging.
- It is plug-in only, requires a NEMA 14-50 outlet, stops at 32A / 7.7 kW, and offers no app or Wi-Fi scheduling. That is below the i4's 11 kW onboard ceiling, so overnight charging is slower than a 48A wall unit.
Check Price →2. ChargePoint Home Flex — Best All-Around Pick
ChargePoint Home Flex
Best All-Around Pick
- It fits the 11kW/48A onboard charger found on every current i4 trim, so no capacity is wasted and nothing bottlenecks.
- You buy just one connector, because every i4 through 2026 takes J1772, and there's no risk of picking the wrong version as with brands midway through the NACS shift.
- Our full ChargePoint Home Flex review covers all three configurations, hardwired and plug-in.
- If you're equipping a business fleet or a multi-unit property, a free Amazon Business account brings quantity discounts and tax-exempt purchasing, covering the Home Flex and the NEMA parts both.
Check Price →3. Autel MaxiCharger AC Wallbox — Best Budget Pick
Autel MaxiCharger AC Wallbox
Best Budget Pick
- It reaches the same 48A ceiling as the Home Flex for less money, so you give up no charging speed for an i4's 11kW charger.
- Our full Autel MaxiCharger lineup review explains how this tier measures up against the step-up AC Pro.
Check Price →4. Grizzl-E Classic 40A — Cheapest Option
Grizzl-E Classic 40A
Cheapest Option
- A cast-aluminum, NEMA 4 outdoor-rated build at the lowest price of the three, with no smart features and no app, just a plug and a cable.
- Its 40A limit falls short of the full 48A that an i4's onboard charger can use, which means somewhat slower overnight charging. It makes sense only if the price difference matters more than recovering that last bit of range.
- Our full Grizzl-E lineup review covers the tiers that reach 48A and beyond.
Check Price →The bottom line
All current BMW i4 trims have the same 11kW/48A onboard charger and the same J1772/CCS1 port, making this one of the few brand-capture picks on this site with no connector choice to make. The ChargePoint Home Flex matches that 48A ceiling exactly and is the safest overall purchase. Go with the Autel MaxiCharger if budget outweighs extra configurability, or the Grizzl-E Classic if you only want the cheapest box that works. Our NACS vs J1772 guide covers when BMW's broader NACS transition actually happens, and our EV charger installation cost guide covers the usual price of installing the 60A circuit this charger needs. The WenStorm Level 2 Portable ($219.99) is the alternative worth knowing if you want a plug-in, no-install setup: it runs 32A / 7.7 kW from an existing NEMA 14-50 outlet with a 25-foot cable and a J1772 connector that fits the i4's CCS1 port. It is slower than the i4's 11 kW onboard ceiling and has no app or Wi-Fi scheduling, but WenStorm costs far less than the 48A units.
Shopping for a business?
Equipping a company with chargers? Opening a free Amazon Business account gets you volume discounts and tax-exempt buying.
Frequently Asked Questions
Which home charger works best for a BMW i4?
For any BMW i4, the best overall pick is the ChargePoint Home Flex (~$549, configurable 16-50A, J1772), which fits the 11kW/48A onboard charger shared by every current i4 trim. Unlike some other brand-capture roundups on this site, you need not choose a connector version, since every i4 through the 2026 model year uses J1772/CCS1. A lower-cost plug-in alternative is the WenStorm Level 2 Portable, at 32A / 7.7 kW for $219.99.
Is there a NACS charging port on the BMW i4?
Not yet. All BMW i4 models built through the 2026 model year, whether eDrive35, eDrive40, or M50, charge AC through the CCS1 port, which has the same physical pins as J1772, so a standard J1772 home charger plugs in directly with no adapter. BMW's website says native NACS ports are due with 2027-model-year vehicles, not the present i4 lineup. The first BMW with a native NACS port is the 2026 i5 M60, and only that one i5 trim has it.
What kW does the onboard charger in a BMW i4 support?
The same 11kW onboard AC charger sits in all three current i4 trims, eDrive35, eDrive40, and M50, and it limits home charging to 48A no matter how much you spend on a charger. At 11kW, charging from 10-80% at home takes about 5.5 hours, and BMW's home-charging page estimates roughly 35-40 miles of range added per hour on a matching 48A charger.
Is it possible to use a Tesla Supercharger with a BMW i4?
It can, but through DC fast charging and not a home charger. A 2022-2026 i4 requires a Remote Software Upgrade plus a NACS DC adapter for non-Magic-Dock Superchargers, or it can use Magic Dock-equipped stations without an adapter. This doesn't change which Level 2 home charger to choose, since home AC charging on every current i4 goes through the J1772/CCS1 port.
Which breaker size does a BMW i4 home charger need?
A 48A-rated charger needs a 60A breaker, which covers the 11kW onboard charger found on every current i4 trim. The basis is NEC 625.41 and 210.20(A), requiring continuous-load EV circuits to be sized at 125% of the charger's rated output. A WenStorm Level 2 Portable runs at 32A, so it needs a 40A circuit and a NEMA 14-50 outlet instead.
Is the WenStorm Level 2 Portable good for a BMW i4?
It does the job when a NEMA 14-50 outlet is already in place and you accept slower charging. The WenStorm Level 2 Portable delivers 32A / 7.7 kW with a J1772 connector that fits the i4's CCS1 port, at $219.99 with a 2-year warranty. That is below the i4's 11 kW onboard ceiling, and it has no app or Wi-Fi scheduling.