Grizzl-E Ultimate 48A: specs, charging speed and standby power
11.52 kW max output · 48 A · 24 ft cord · 1.7 W standby (ENERGY STAR)
Certified specs
| Type | Level 2 |
|---|---|
| Maximum output power | 11.52 kW |
| Max nameplate output current | 48 A |
| Input voltage | 240 V |
| Number of outputs | 1 |
| Output cord length | 24 ft |
| Cord gauge | 8 AWG |
| Network capable | Yes |
| Network protocol | Wi-Fi or Gigabit Ethernet |
| No-vehicle-mode power (standby) | 1.7 W |
| Partial-on-mode power | 1.68 W |
| Idle-mode power (car connected, not charging) | 2.4 W |
| Total loss at full current (test) | 130.99 W |
| Markets | United States, Canada |
| Date available on market | 2026-06-30 |
| Date certified | 2026-06-30 |
| ENERGY STAR partner | United Chargers Inc. |
| Model number(s) as listed | GRS-077-W-HW-25J48-A-GB |
| Source | ENERGY STAR record 4661474 · Product Finder page |
How much range does it add per hour?
Estimate: miles per hour of charging = charger kW ÷ the car's EPA electricity use (kWh per 100 miles, measured at the wall) × 100. Only valid if the car's onboard charger accepts 11.52 kW; many EVs accept 7–11.5 kW on AC, so a bigger charger won't charge them faster.
| EV (median-efficiency trim) | Range added per hour | Est. hours, empty to full EPA range |
|---|---|---|
| Tesla Model Y (Model Y Standard AWD, 26.5 kWh/100 mi) | 43 mi | 6.8 h |
| Tesla Model 3 (Model 3 Performance, 29.6 kWh/100 mi) | 39 mi | 7.9 h |
| Chevrolet Equinox EV (Equinox EV AWD (11 kW Charger), 32.6 kWh/100 mi) | 35 mi | 8.7 h |
| Ford F-150 Lightning (F-150 Lightning 4WD PRO ER1, 47.9 kWh/100 mi) | 24 mi | 13.3 h |
| Hyundai Ioniq 5 (Ioniq 5 AWD (20inch Wheels), 34.5 kWh/100 mi) | 33 mi | 8.1 h |
| Ford Mustang Mach-E (Mustang Mach-E AWD, 33.6 kWh/100 mi) | 34 mi | 7.0 h |
| Kia EV9 (EV9 Long Range AWD GT-Line, 41 kWh/100 mi) | 28 mi | 10.0 h |
| Rivian R1S (R1S Premium Long Range (20in AT), 43.2 kWh/100 mi) | 27 mi | 13.9 h |
Vehicle figures: fueleconomy.gov. Real charging slows near 100% and in cold weather. Try your own car and battery level.
Circuit and breaker
At 48 A continuous, the circuit typically needs to be rated for at least 125% of the charger's load: 60 A, which usually means a 60 A breaker (estimate based on the NEC continuous-load rule; your electrician and local code decide). Many chargers can be set to a lower current for smaller circuits.
Standby electricity
With no car connected it draws 1.7 W; with a car connected but not charging, 2.4 W. If left in no-vehicle mode all year, that is at most about 15 kWh/yr ≈ $2.73 at the U.S. average rate (estimate).
Other brands with the same 11.52 kW output, lowest standby first
| Charger | Max output | Max current | Cord | Wi-Fi/network | Standby (no vehicle) | Max standby cost/yr* |
|---|---|---|---|---|---|---|
| Wallbox PULSAR PLUS NA | 11.52 kW | 48 A | 24 ft | Yes | 0.96 W | $1.54 |
| Tesla Universal Wall Connector (1734412-##*) | 11.52 kW | 48 A | 22 ft | Yes | 1.36 W | $2.18 |
| Tesla Wall Connector (1457768-##*) | 11.52 kW | 48 A | 22 ft | Yes | 1.36 W | $2.18 |
| Lectron LECHGNexusHWJ1772 | 11.52 kW | 48 A | 22 ft | No | 1.86 W | $2.98 |
| EVIQO EVIPOWER248J | 11.52 kW | 48 A | 25 ft | Yes | 2.43 W | $3.90 |
| EVIQO EVIPOWER248N | 11.52 kW | 48 A | 25 ft | Yes | 2.43 W | $3.90 |
| DeWalt DXPAEV0##CP-*** | 11.52 kW | 48 A | 20 ft | Yes | 2.68 W | $4.30 |
| Leviton EV48G | 11.52 kW | 48 A | 25 ft | Yes | 2.71 W | $4.35 |
*Estimate: ENERGY STAR "no vehicle mode" input power × 8,760 h, i.e. the most it could use in a year if no car were ever plugged in, × U.S. average residential rate 18.31¢/kWh (EIA, July 2026 (preliminary)).
Compare this charger side by side with any other · All Grizzl-E chargers
See Grizzl-E EV chargers on the manufacturer's site (plain link, not an affiliate link)
We have not tested this product. Figures are as listed in ENERGY STAR data retrieved 2026-10-17.