Ultimate 48A specs
| Brand | Grizzl-E |
|---|---|
| Released | 2023 |
| Max amperage | 48 A (16–48 A adjustable) |
| Max power | 11.5 kW at 240 V |
| Cable length | 25 ft |
| Connector | J1772 |
| Connector note | Ships in J1772 or native-NACS variants — choose the connector at purchase. (An 80 A / 19.2 kW Ultimate also exists; this review covers the 48 A.) |
| Install | Hardwired |
| Smart features | Wi-Fi with Grizzl-E Connect app (scheduling, energy stats, remote control, diagnostics), load-balancing across multiple units, works with or without internet |
| Outdoor rating | NEMA 4X / IP67 cast-aluminum enclosure, UL tested |
| Warranty | 3 years |
| Price tier | $$ Mid-range ($350–$550). See Amazon for today's price. |
- J1772 hardwired ASIN B0D9HV151X — NACS/color variants are separate listings, confirm connector before buying.
- 25 ft cable is among the longest in the class.
Specs are compiled from manufacturer listings and may change between production runs. Confirm on the retailer page before buying.
The Grizzl-E Ultimate 48A is the enthusiast’s pick: Grizzl-E’s famously tank-like cast-aluminum build with a real smart app, your choice of J1772 or native-NACS connector, and a full 48 amps — for ~$480–$650, undercutting Tesla and ChargePoint on price. One-line verdict: if you want the toughest 48-amp smart charger and don’t need the Tesla app’s polish or a plug-in install, this is the sweet spot of the whole roundup.
Key specs in context
48 amps / 11.5 kW — the full home-charging ceiling. Roughly 35–44 miles of range per hour depending on the vehicle, which means any EV charges empty-to-full overnight with hours to spare. At this power level the differences between brands are single-digit percentages; what you’re choosing is build quality, software, and connector — and that’s where the Ultimate’s case is strongest. Sanity-check your car with our charge time calculator.
J1772 or native NACS — your choice at purchase. Unlike the Tesla Universal’s integrated Magic Dock, the Ultimate makes you pick one connector. That’s a genuine limitation in a transitional market: choose wrong and you’re buying an adapter later. Match the connector to the cars you’ll own for the next five-plus years, and read our NACS vs J1772 explainer if the garage’s future is uncertain.
25-foot cable — the longest in the class. One of those specs that matters more than it sounds: an extra foot or two is the difference between reaching the far bay of a two-car garage and not. The honest caveat from owner feedback is that the cable runs stiffer in cold weather than the Classic’s — a minor annoyance, not a flaw. If your winters are brutal, plan the mount point to minimize how much cable you handle daily.
NEMA 4X / IP67 cast aluminum, UL tested. This is the toughest enclosure rating here — dust-tight, hose-down-proof, corrosion-resistant. If the charger lives on an exposed exterior wall through winters and storms, the Ultimate is built for exactly that.
A word on the 80-amp sibling. Grizzl-E also sells an 80 A / 19.2 kW Ultimate for ~$899, and it’s worth knowing why you almost certainly don’t want it: it needs a 100-amp circuit, and almost no EV on the road can accept 80 amps of AC charging anyway. The 48-amp version is the full practical ceiling — the 80-amp exists for commercial duty cycles and bragging rights, not homes.
Installation
Hardwired only — the hardwire kit (terminal lugs, heat-shrink) is included in the box, but you still need a licensed electrician to land it on a dedicated circuit. Full 48 amps needs a 60-amp breaker; the amperage adjusts from 16 to 48 amps, so it can be commissioned lower for tighter panels — our panel capacity checker will tell you where you stand before you call the electrician. Budget the install labor on top of the unit price with our installation cost guide (federal tax credit included), and weigh the approach against our hardwired vs plug-in guide — if you need plug-in, the Ultimate isn’t your charger.
Smart features & app
The Grizzl-E Connect app covers scheduling, energy statistics, remote control, and diagnostics, plus intelligent load distribution across multiple Ultimates (equal or priority sharing for two-EV garages). It works with or without an internet connection, and the external Wi-Fi antenna gives it better range than most — a thoughtful touch for detached garages. The honest assessment: the app is good and genuinely useful, but it’s not the Tesla or ChargePoint app — less polished, a smaller ecosystem, no public-charging network attached. What you get instead is the metal box and the price.
How it compares
Versus the Tesla Universal Wall Connector: similar money, a tougher enclosure, and a native-NACS option — but no integrated dual connector and a thinner app ecosystem. If your garage will see both connector types, the Tesla’s Magic Dock wins; if it’s one connector and harsh weather, the Grizzl-E wins.
Versus the Grizzl-E Classic: the Classic is the same toughness philosophy for ~$200 less, but it’s 40 amps, J1772-only, and deliberately app-free. The Ultimate is the “I want the tank and the app” upgrade — worth it if you’ll actually use scheduling and energy stats.
Versus the Emporia Pro: the Emporia’s whole-home load management is unique and can avoid a panel upgrade entirely; the Grizzl-E’s build is tougher and it typically costs less. Full panel? Take the Grizzl-E. Constrained panel? Take the Emporia. Our Tesla vs ChargePoint vs Grizzl-E comparison frames the premium tier.
Bottom line
The Ultimate 48A is the charger for buyers who distrust plastic boxes and subscription-feeling apps: a metal, weatherproof, UL-tested unit with honest smart features and your choice of connector, for less than the big names. Hardwired-only install and a single-connector choice are the trade-offs. Check the current price — it floats in the ~$480–$650 band — and make sure you’re looking at the 48A version, not the pricier 80A.
Accessories for the Ultimate 48A
Useful add-ons for your install, sold on Amazon. An adapter in the frunk covers you for mixed-connector situations.
- Connector adapterTesla SAE J1772 charging adapterOfficial Tesla
Tesla's official J1772-to-NACS adapter lets any Tesla charge from a J1772 charger like the Grizzl-E or ChargePoint J1772. Small, and it lives in the frunk.
- NEMA 14-50 outletHubbell HBL9450A NEMA 14-50 receptacleUniversal fit
The industrial-grade 14-50 outlet electricians recommend for EV charging: solid brass contacts that won't overheat under a continuous 40A load, unlike cheap dryer outlets.
- NEMA 14-50 outletBryant 9450FR NEMA 14-50 receptacleUniversal fit
Hubbell's sister brand at a lower price with the same heavy-duty internals. A solid second choice for a plug-in install.
- Connector adapterLectron J1772 to Tesla NACS adapterUniversal fit
A popular third-party J1772-to-NACS adapter rated for 48A/60A, handy if your J1772 charger didn't come with one. Match the adapter's amp rating to your charger.
Compatibility checked October 2026. More in our accessories guide.
