FLO Home X3 Review: 50 A, Type 4X, and a 3-Year Warranty

A black wall-mounted EV charger with a small display, its cable plugged in — Illustrative photo, not the FLO Home X3.

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The X3 is the simplest charger in FLO's home range, and the only one of the three with a fixed holster and no daisy-chain option. We have not tested one; this review is built from FLO's published pages and the ENERGY STAR dataset, linked at the foot of this page.

The specs

Published specifications
	FLO Home X3
Maximum output	50 A / 12 kW
Adjustable	6 A to 50 A
Connector	J1772 or NACS, chosen at purchase
Cable	25 ft, commercial grade
Holster	Fixed
Installation	Hardwired, or NEMA 14-50 plug on a 24-inch cord
Enclosure	Type 4X, industrial-grade thermoplastic
Operating temperature	-40 F to 122 F
Connectivity	2.4 GHz Wi-Fi; cellular LTE-M listed as in development
Weight	12.5 lb hardwired, 13.6 lb plug-in
Size	15 x 7.25 x 7.19 in
ENERGY STAR	Listed
Warranty	3 years

From FLO's specification table and spec sheet, and the ENERGY STAR dataset.

What 50 amps asks of your house

The arithmetic

50 A x 240 V = 12,000 W = 12 kW

At 3.5 mi/kWh: about 42 miles of range per hour

Required circuit: 50 x 1.25 = 62.5 A, so a 70 A breaker

On a NEMA 14-50, which sits on a 50 A circuit: 40 A continuous, 9.6 kW

Full output needs the hardwired version and a 70 A circuit. Your car then charges at the lower of 12 kW and its own onboard charger's AC rate, so check the manual before paying for the bigger circuit. How many amps you need.

The app

Schedules, to charge inside cheaper off-peak hours.
Virtual lock mode, FLO's name for restricting who can charge -- useful on an open driveway.
Remote start and stop, real-time status, charging history and notifications.
Cellular connectivity is listed, but FLO says it is a feature in development and may not be enabled at purchase.

Who should buy it

A car that can take more than 40 A, and a panel that can spare a 70 A circuit. The 50-amp picks.
An exposed wall in a cold climate. FLO rates the Type 4X enclosure down to -40 F. Cold-weather chargers.
A Tesla household that wants a NACS connector without buying Tesla's own unit. FLO vs Tesla Wall Connector.

Who should skip it

You want no app at all. Chargers without an app.
Two EVs on one circuit. FLO lists daisy-chaining for the X6 and X8, not the X3. Two-EV households.
A plug-in install where the outlet is not right beside the charger. The plug-in version's cord is 24 inches.

The FLO Home X3 in full

Full published specifications, and the case against it.

1. 50 A with an app

FLO Home X3

FLO · J1772 · 50 A / 12 kW · 25 ft cable

A 50-amp, Type 4X home charger adjustable from 6 A, sold with a J1772 or NACS connector and a 25 ft cable, hardwired or on a NEMA 14-50 plug. ENERGY STAR listed.

What is good

Adjustable from 6 A to 50 A
Type 4X enclosure -- waterproof and corrosion-resistant
Heat sensors in the plug and the connector
J1772 or NACS, and hardwire terminals that accept copper or aluminum wiring

What is not

Three-year warranty on the X3; FLO's five-year term is for the X6 and X8
The plug-in version's cord is 24 inches, so the receptacle must sit right beside it
Needs a 70 A circuit to run at the full 50 A

Published specifications for the FLO Home X3
Maximum output	50 A / 12 kW at 240 V
Adjustable	6 A to 50 A
Connector	J1772 or NACS, chosen at purchase
Cable	25 ft
Enclosure	Type 4X, industrial-grade thermoplastic
Installation	Hardwired, or NEMA 14-50 plug on a 24-inch cord
Heat sensors	In the NEMA plug and the connector
App	Schedules, access restriction, charging history
ENERGY STAR	Listed
Operating temperature	-40 F to 122 F
Warranty	3 years

Skip this if: Skip it if you want a charger with no app at all, or if you want the full 50 A but your panel cannot carry a 70 A circuit.

Specifications above are the manufacturer’s published figures. Source: FLO, FLO, X3 spec sheet, US EPA, ENERGY STAR. We have not tested this unit — see how we pick.

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Alternatives

Head to head: FLO vs ChargePoint Home Flex, FLO vs Autel, FLO vs Grizzl-E and FLO vs Tesla Wall Connector.

FAQ

Questions people actually ask

Is the FLO Home X3 worth it?

If you want 50 A, a NACS option or an enclosure rated to -40 F, it is a strong fit. If your car or panel limits you to 40 A, a simpler 40 A unit charges just as fast.

What warranty does the FLO Home X3 have?

Three years, per FLO's specification table. The five-year term FLO advertises applies to the X6 and X8.

Can the FLO Home X3 charge a Tesla?

Yes. Buy it with the NACS connector, or buy the J1772 version and use the Tesla's J1772 adapter.

What circuit does the FLO Home X3 need?

At the full 50 A, a hardwired install on a 70 A circuit. Plugged into a NEMA 14-50 on a 50 A circuit, it can use 40 A continuously. The installation manual governs.

Sources

Where these numbers come from

FLO Home Level 2 chargers — FLOX3 column of FLO's specification table: 6-50 A, 12 kW, 25 ft cable, fixed holster, Type 4X industrial-grade thermoplastic, -40 F to 122 F, 2.4 GHz Wi-Fi (cellular LTE-M in development), no daisy chain, 12.5 lb hardwired or 13.6 lb plug-in, 3-year warranty (5 years on the X6 and X8). Fetched 2026-09-10.
FLO Home X3 spec sheet — FLOJ1772 or NACS connector and the 25 ft cable. Fetched 2026-09-10.
ENERGY STAR Certified Electric Vehicle Supply Equipment -- AC-Output (dataset) — US EPA, ENERGY STARListings and maximum current for the FLO Home and the other units named. Queried 2026-09-10.
NEC Article 625: EV charging equipment — WireRefContinuous-load rule behind every circuit figure on this page.