Grizzl-E Ultimate 48A vs 80A

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The verdict: buy the 48-amp Ultimate. It is the same charger in every respect you will touch -- same metal case, same 25-foot cable, same cold rating, same app, same OCPP -- on a 60-amp circuit that a normal 200-amp panel can usually spare, for roughly half the money. The 80-amp model is the right buy for a narrow set of houses: a 19.2 kW vehicle and a service with 100 amps of continuous capacity going spare. If you are not sure you are in that set, you are not.

Side by side

The circuit is the whole decision

Run a load calculation before you shop, not after. Electrical panel load calculation is the method, and panel upgrade for an EV charger covers what it costs if the answer is no. In practice a service upgrade to feed an 80-amp charger costs more than the difference between these two units several times over.

And the car has to want it

The charger offers power; the car decides how much to take. If your car's onboard charger accepts 11.5 kW, the 80-amp Ultimate will charge it at 11.5 kW -- identically to the 48-amp model, on a circuit twice the size. The EPA makes this unusually easy to check on GM's EVs, because it rates the 11 kW and 19 kW onboard-charger versions as separate trims and names the charger in the trim title. For other makes, read the car's charging screen.

Two smaller differences worth knowing

• ENERGY STAR. The 80 A model's page lists it; the 48 A model's does not. ENERGY STAR certification for chargers is specifically about idle energy use, tested by a recognized laboratory -- see do EV chargers use power when idle. It is a tiebreaker, not a headline.
• The published adjustable steps. The 80 A model lists eight steps down to 16 A, including 48 A. The 48 A model lists four, topping out at 40 A -- so its own 48 A rating is not in its published step list. If you specifically need a setting between 40 and 48 A, ask United Chargers which model gives it to you.

Who should buy which

If you are weighing the tiers rather than these two SKUs, 48 amps vs 80 amps does it across brands, and best 80 amp EV charger ranks the three units that reach 19.2 kW.

Both Ultimates

The 48 A for almost everyone, the 80 A for the houses that can feed it. Live Amazon prices with the date they were read.

1. Ultimate build quality on a 60 A circuit

Grizzl-E Ultimate 48A

United Chargers · J1772 + NACS · 48 A / 11.5 kW · 25 ft cable

The Ultimate's hardware at the amperage most houses can feed: 48 A and 11.5 kW, hardwired, Wi-Fi and OCPP, in the same cast-aluminum Type 4 case. The catch is what United Chargers publishes about dialing it down -- the adjustable steps stop at 40 A.

What is good

• +48 A on a 60 A circuit, which a normal 200 A panel can usually spare
• +Same cast-aluminum UL Type 4 case and -22 F rating as the 80 A Ultimate
• +25 ft cable, the long end of the range
• +Wi-Fi, a mobile app and OCPP, so it is not locked to one vendor's cloud
• +Offered with either a J1772 or a NACS connector

What is not

• −Hardwire only -- there is no plug-in version of the Ultimate
• −United Chargers publishes adjustable steps of 40/32/24/16 A, so the published step list does not include 48 A itself
• −No ENERGY STAR certification listed, unlike the 80 A Ultimate
• −A J1772 unit needs an adapter on every charge if you drive a NACS car
• −Costs more than the 40 A Grizzl-E Classic for speed many owners will not use

Published specifications for the Grizzl-E Ultimate 48A

Maximum output	48 A / 11.5 kW
Adjustable current	40 A, 32 A, 24 A, 16 A (as published)
Connector	J1772 or NACS, chosen at purchase
Cable	25 ft (7.6 m)
Installation	Hardwire only
Enclosure	Aluminum, UL Type 4 indoor/outdoor rating
Operating temperature	-30 C to +50 C (-22 F to 122 F)
Connectivity	Wi-Fi (2.4 GHz), mobile app, OCPP
Certification	UL, file E510712
Weight	11.00 kg / 24.25 lb, shipped
Enclosure size	10.25 x 6.25 x 3.75 in
Country of origin	Canada, per United Chargers
Model number	GRS-077-W-HW-25N48-A-GB
Warranty	3 years, or 5 years

Skip this if: Skip it if your car accepts more than 11.5 kW and your panel can carry a 100 A circuit -- that is what the 80 A model is for. Skip it too if you want a plug-in unit; this is hardwire only.

Specifications above are the manufacturer’s published figures. Source: United Chargers. We have not tested this unit — see how we pick.

$479.99 · View on Amazon#ad how we are funded · price as of October 17, 2026

2. A 19.2 kW car and a large service

Grizzl-E Ultimate 80A

United Chargers · J1772 · 80 A / 19.2 kW · 25 ft cable

The top of AC Level 2: 80 A and 19.2 kW, hardwired, adjustable down through eight settings. The catch is the circuit -- 80 A continuous asks for a 100 A circuit, which most houses cannot spare.

What is good

• +80 A / 19.2 kW is the ceiling of AC Level 2 charging
• +Eight current settings, from 80 A right down to 16 A, so one unit fits almost any circuit
• +25 ft cable and a cast-aluminum UL Type 4 enclosure rated -22 F to 122 F
• +UL listed with a published file number, plus Energy Star certification
• +OCPP support alongside the maker's own app, which is rare at this price

What is not

• −80 A continuous needs a 100 A circuit, which most homes cannot spare
• −Very few cars accept more than 11.5 kW on AC, so the headline figure is unusable for most buyers
• −Hardwired only -- there is no plug-in version
• −Costs far more than the 48 A tier that most households will actually use
• −2.4 GHz Wi-Fi only, like the rest of the Grizzl-E Connect range

Published specifications for the Grizzl-E Ultimate 80A

Maximum output	80 A / 19.2 kW
Adjustable	80, 64, 56, 48, 40, 32, 24 or 16 A
Connector	SAE J1772 or NACS, chosen at purchase
Cable	25 ft (7.6 m)
Installation	Hardwired only
Enclosure	Cast aluminum, UL Type 4 indoor/outdoor
Operating temperature	-30 C to +50 C (-22 F to 122 F)
Enclosure size	10.25 x 6.25 x 3.75 in
Weight	26.46 lb (12 kg), shipped
Connectivity	Wi-Fi (2.4 GHz), the Grizzl-E Connect app, and OCPP
Country of origin	Canada, per United Chargers
Certification	UL, file E510712; Energy Star
In the box	Charger, hardwire kit, mounting cradle, EasyEvPlug
Warranty	3 years, or 5 years chosen at purchase

Skip this if: Skip it unless your car actually accepts more than 11.5 kW and your panel can carry a 100 A circuit. Both have to be true, and for most homes neither is.

Specifications above are the manufacturer’s published figures. Source: United Chargers. We have not tested this unit — see how we pick.

$899.00 · View on Amazon#ad how we are funded · price as of October 17, 2026