ElectrifiedExperts
The most useful thing in any ChargePoint Home Flex review is a correction, so here it is up front: the Home Flex’s top 50 A setting requires a 70 A circuit, not the 60 A almost everyone assumes. NEC 625 treats EV charging as a continuous load, 50 × 1.25 = 62.5 A, and the next standard overcurrent device in NEC 240.6(A) is 70 A. ChargePoint’s own datasheet says only “125% of maximum load,” which people read as 60 A and get wrong. Beyond that, the Home Flex is the best-connected unit in the class, with dual-band 2.4/5 GHz Wi-Fi and 90 days of session data stored on the device itself, and the weakest on enclosure rating.
If you’re installing on a 60 A circuit, run the unit at 48 A and you are compliant, fast, and done. The 50 A setting exists mostly to give ChargePoint a bigger number on the box.
The short version
- Dual-band Wi-Fi is the real differentiator. 802.11 a/b/g/n on both 2.4 and 5 GHz. Almost nothing else in this class has a 5 GHz radio, and a garage at the far end of a house on a saturated 2.4 GHz band is a common, annoying situation.
- 90 days of session data lives on the charger. If ChargePoint’s cloud has a bad day, or your ISP does, your energy log survives. Most competitors lose the record.
- 16 to 50 A adjustable in the app. Six steps, so you can fit the unit to whatever circuit your panel can actually spare instead of the other way around.
- 50 A needs a 70 A breaker. 50 × 1.25 = 62.5 A, next standard OCPD is 70 A. Set it to 48 A on a 60 A circuit and stop worrying.
- Type 3R, not Type 4. Weather-resistant, not watertight. Emporia and Grizzl-E both claim the higher rating, and on an exposed outdoor wall that is a genuine difference.
- The Wi-Fi drops off, repeatedly, for a lot of owners. ChargePoint maintains a dedicated Home Flex troubleshooting page, which tells you something about the volume.
- No OCPP. Same walled garden as Emporia and Tesla. The JuiceBox shutdown made that a real risk rather than a theoretical one.
The 70 A correction, worked through
This is worth doing slowly because the arithmetic is easy and the conclusion is counterintuitive.
NEC 625.42 classifies EV supply equipment load as continuous. NEC 625.41 requires the overcurrent device to be rated at not less than 125% of the equipment’s maximum load. So a 40 A charger needs 40 × 1.25 = 50 A, which is a standard breaker, clean. A 48 A charger needs 48 × 1.25 = 60 A, also standard, also clean. That is exactly why the whole industry settled on 48 A as the top setting.
ChargePoint went one step further to 50 A, and 50 × 1.25 = 62.5 A. There is no 62.5 A breaker. NEC 240.6(A) lists the standard sizes, and the next one up is 70 A.
So the Home Flex’s headline 12 kW is real, and it is also the only mainstream home charger whose top setting pushes you into a 70 A circuit with 4 AWG copper. Compare that to Emporia’s 48 A on 60 A with 6 AWG. You are buying 0.5 kW, roughly 4%, for a wire size step and a breaker that a lot of residential panels will not accept without a subpanel conversation.
My advice is unambiguous. Install on a 60 A circuit, set the app to 48 A, and you have 11.5 kW, full code compliance, and the same charge times as every 48 A unit on the market. If an electrician tells you 50 A on a 60 A breaker is fine, ask them to point at 240.6(A).
What the adjustable range is actually for
The Home Flex steps through 16, 24, 32, 40, 48 and 50 A in the app. That flexibility gets marketed as future-proofing, which is mostly nonsense, because your car’s onboard charger sets the real ceiling and it isn’t changing. The genuine use is the opposite direction: fitting the charger to a panel that can’t spare 60 A.
A 32 A setting needs a 40 A circuit and delivers 7.7 kW, which adds something like 25 to 30 miles per hour of charging to a typical sedan. Overnight, that is a full battery from nearly empty. Plenty of people install 48 A hardware, plug in at 8 pm with 40% remaining, and finish by 10:30, then leave the car sitting on a completed session for eight hours. The amperage bought them nothing.
| Setting | Required circuit | Output at 240 V | Typical copper | When it makes sense |
|---|---|---|---|---|
| 16 A | 20 A | 3.8 kW | 12 AWG | A plug-in hybrid, or a panel with nothing left. |
| 24 A | 30 A | 5.8 kW | 10 AWG | Short commutes and a garage circuit you can reuse. |
| 32 A | 40 A | 7.7 kW | 8 AWG | The sensible default for most single-EV households. |
| 40 A | 50 A | 9.6 kW | 8 AWG | Same as any NEMA 14-50 charger. The volume setting. |
| 48 A | 60 A | 11.5 kW | 6 AWG | Worth it if your car accepts 11.5 kW or more. |
| 50 A | 70 A | 12.0 kW | 4 AWG | Rarely. 4% more power for a wire size step and an unusual breaker. |
Circuit sizes derived from NEC 625.41 at 125% of continuous load, rounded up per NEC 240.6(A). Conductor sizes are typical for short runs at 75 °C terminations and are not a substitute for your electrician’s calculation.
Cable length, voltage drop, and the number nobody publishes
The Home Flex ships with a 23 ft cable. That’s two feet shorter than Emporia’s 25 ft and considerably longer than Grizzl-E’s standard 18 ft. In practice 23 ft reaches both bays of a two-car garage from a single mounting point, which is the threshold that matters.
Length is not free, though, and this is where the branch circuit deserves attention.
Voltage drop scales with run length and inversely with conductor area. At 40 A on a 50 ft run, 10 AWG loses over 5 V while 6 AWG loses about 2 V. Lower voltage at the same current is less power delivered, and nothing on the charger’s display will tell you it’s happening. NEC 210.19(A) recommends holding branch-circuit drop to 3%, which is 7.2 V at 240 V, and it’s informational rather than mandatory. Worth designing to anyway.
What that chart cannot cover is the charger’s own output cable. ChargePoint does not publish the conductor gauge inside the 23 ft cord. Neither does Emporia, Grizzl-E, Wallbox, Tesla or anyone else we checked. It is the most consistent information gap in this category, and it means the last 23 feet of your circuit is a black box you cannot calculate.
The data story: dual-band Wi-Fi and the local session buffer
Two specs here are genuinely uncommon, and both are about the charger’s relationship with your network rather than with your car.
First, the radio. The Home Flex runs 802.11 a/b/g/n on 2.4 and 5 GHz. Nearly every competitor, Emporia included, is 2.4 GHz only. If your garage is attached and your router is nearby, that difference is academic. If your garage is detached, or your neighbourhood’s 2.4 GHz spectrum is a mess of overlapping networks, 5 GHz gives you a shot at a usable link that a 2.4-only charger cannot. Not many people check this before buying, and it’s one of the few specs in the category where the answer is clearly better rather than a trade.
Second, the buffer. The Home Flex stores 90 days of session data on the unit itself. That sounds like a footnote until you consider what a cloud-only charger does during an outage: it charges the car fine, and the energy record for those sessions simply never exists. If you’re claiming a utility EV rate, tracking cost-per-mile, or splitting charging costs with an employer, a gap in the log is a real problem. A 90-day local buffer means a week-long outage costs you nothing.
ChargePoint Home Flex, hardwired, J1772
The hardwired SKU is the one to buy, because the plug-in versions are capped below it and hardwiring removes the receptacle as a failure point. Set it to 48 A on a 60 A circuit unless you have specifically run a 70 A feeder. ChargePoint also sells NACS versions of each configuration on Amazon, so check the connector before you order.
Check price on Amazon(paid link)
Hardwired versus plug-in, and why the plug-in versions are slower
ChargePoint sells the Home Flex in three configurations: hardwired, NEMA 14-50 and NEMA 6-50. The hardwired unit does the full 50 A. The plug-in units are capped at 32 or 40 A depending on SKU. That is not a different charger inside. It’s NEC 210.21(B)(1), which limits continuous load through a single receptacle. A 14-50 on a 50 A circuit gives you 40 A continuous, and no firmware setting changes that.
If you want a plug-in install, the NEMA 14-50 J1772 version is the common one and the NEMA 6-50 J1772 version suits a garage already wired for a welder. Both are on Amazon. One warning that applies to every plug-in charger, not just this one: 40 A continuous through a molded plug is exactly the duty cycle that destroys residential-grade receptacles. Contact springs relax under sustained load, contact resistance climbs, the face heats and eventually melts. Use an industrial-grade 14-50 and have your electrician torque it properly.
What it does well
- Dual-band 2.4/5 GHz Wi-Fi, effectively unique in this class
- 90 days of session history stored on the device, not only in the cloud
- Six amperage settings from 16 A to 50 A, so it fits almost any panel
- The widest SKU matrix available: hardwired, 14-50 and 6-50, each in J1772 and NACS
- UL and cUL listed, Energy Star certified, CSA for Canada
- −30 °C to 50 °C operating range, and 95% humidity at 50 °C
- 20 mA CCID ground fault with auto-retry, which reduces nuisance lockouts
Where it falls short
- Type 3R enclosure, weather-resistant rather than watertight
- Recurring, well-documented Wi-Fi drop-off requiring re-provisioning
- The 50 A setting needs a 70 A circuit that most homes will not have
- Plug-in SKUs are capped at 32 or 40 A
- No OCPP, so the unit is tied to ChargePoint’s cloud for its whole life
- 23 ft cable is fine but shorter than Emporia’s, and its gauge is unpublished
The two problems worth taking seriously
The enclosure first. ChargePoint rates the Home Flex Type 3R per UL 50E. Type 3R is rain, sleet and snow resistant. Type 4, which Emporia and Grizzl-E both claim, adds hose-directed water and is the rating you want on a wall that gets weather driven at it sideways. Under an eave or inside a garage, 3R is entirely adequate and this distinction doesn’t matter. On an exposed exterior wall in the Pacific Northwest, I’d take the Type 4 unit.
The connectivity second, and this one is harder to dismiss. Home Flex units dropping off Wi-Fi and needing full re-provisioning is a recurring complaint across owner forums, documented on Mach-E and Blazer EV communities among others. ChargePoint runs a dedicated Home Flex troubleshooting page for it. A charger with a bad radio still charges your car, because the pilot signal and the contactor don’t need the internet, but you lose scheduling, rate tracking and remote start until you fix it. The irony of the best radio hardware in the class having the most reported connectivity complaints is not lost on me, and it points at firmware rather than silicon.
Third thing, less a problem than a structural bet: no OCPP. ChargePoint has not claimed OCPP support for the home unit, so it speaks to ChargePoint’s cloud and nothing else. Enel X Way shut down its North American operations in October 2024 and stranded the cloud features on roughly 180,000 JuiceBox chargers, and NHTSA opened preliminary evaluation PE24028 on those same units, a docket that explicitly examines what happens when a manufacturer stops operating. ChargePoint is a large, established company with a commercial network behind it, so the risk is lower here than almost anywhere else in the category. It is not zero.
The honest verdict
Buy the Home Flex if your garage network is marginal or you actually use the charging data. The 5 GHz radio and the 90-day local buffer are the two things nothing else in this class offers, and both matter more day to day than the amperage argument does.
Look elsewhere if the unit is going on an exposed outdoor wall, where Type 4 beats Type 3R, or if you want an open protocol. And ignore the 50 A setting unless you have run a 70 A feeder on purpose.
Frequently asked questions
What size breaker does the ChargePoint Home Flex need?
It depends on the amperage you set. At 48 A you need a 60 A breaker. At 40 A you need 50 A. At the maximum 50 A setting you need a 70 A breaker, because 50 × 1.25 = 62.5 A and NEC 240.6(A) has no 62.5 A device. Most installs should use a 60 A circuit and the 48 A setting.
Is the ChargePoint Home Flex weatherproof?
It’s rated Type 3R per UL 50E, which is weather-resistant, covering rain, sleet and snow. That’s a step below the Type 4 watertight rating Emporia and Grizzl-E claim. It’s fine under an eave or in a garage, and it’s the weaker choice for a fully exposed exterior wall.
Why does my Home Flex keep losing Wi-Fi?
It’s a documented pattern rather than a fault in your unit specifically. Owners across several forums report the charger dropping off the network and needing re-provisioning, and ChargePoint maintains a troubleshooting page for it. The charger still delivers power without a network connection, so you lose scheduling and logging rather than charging.
Can I plug the Home Flex into a NEMA 14-50 and get 50 A?
No. The plug-in SKUs are capped at 32 or 40 A. NEC 210.21(B)(1) limits continuous load through a single receptacle, so a 14-50 on a 50 A circuit tops out at 40 A continuous. Only the hardwired version reaches the higher settings.
ChargePoint Home Flex or Emporia?
ChargePoint for the dual-band Wi-Fi, the on-device session history and the SKU choice. Emporia for the Type 4 enclosure, the longer cable and the CT-clamp load management that can keep you off a service upgrade. We compare them directly in the post linked below.
Where to go next
The direct rival gets the same spec treatment in the Emporia Level 2 analysis, which covers the CT-clamp load management and a documented end-of-session fault you should know about. If you want them side by side, we did that in Emporia vs ChargePoint Home Flex. For the category as a whole, including Grizzl-E, Wallbox and Tesla, start with the best Level 2 EV chargers. And if you are deciding between the J1772 and NACS versions of the same unit, the NACS and J1772 adapter guide explains why that choice matters less than it looks.
