For two-EV households with only one 50 A circuit: it shares 40 A between two cables, so both cars are full by morning without a panel upgrade.
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
| Model number | GRD-077-W-14-25J40-25J40-A-GB |
|---|---|
| Charging | |
| Maximum power | 40 A (9.6 kW) |
| Adjustable current | Yes |
| Vehicle plug | J1772 or Tesla (NACS) |
| Cable length | 25 ft |
| Installation | Plug-in or hardwired (NEMA 14-50) |
| Smart features | |
| Wi-Fi | Yes |
| App | Yes |
| Off-peak scheduling | Yes |
| Load sharing | Yes |
| OCPP (third-party networks) | Yes |
| Safety and build | |
| Safety listing | UL certified (UL file E510712) |
| ENERGY STAR | No |
| Weather rating | NEMA 4 |
| Lowest operating temperature | -22 °F |
| Dimensions | 10.25 x 6.25 x 3.75 in |
| Weight | 21 lb |
| Warranty | 3 years |
The cheapest way to get 40 A from a NEMA 14-50 outlet, with a timer and adjustable current. Best for budget buyers who accept an unlisted charger and a one-year warranty.
Amazon $176.98Tesla’s travel charger, for Tesla owners who want a backup or road-trip cord that also works at home on a 14-50 outlet. Check which adapters come in the box.
Tesla $300A compact, well-featured smart charger for owners who want solar or panel-aware charging later. The 40 A plug-in version costs a lot for its power.
Amazon $749.99Compare the Grizzl-E Duo Connect 40A with any other level 2 EV charger →
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