JuiceBox 40 review

Overview

The JuiceBox 40 is a 9.6kW (40A) home charge point with a J1772 connector, sold tethered with a 7.6m built-in cable. It costs around $549 for the unit before installation and carries a 3-year warranty. On paper it suits anyone on a time-of-use electricity tariff who wants charging to follow the cheapest hours.

Its headline specification point is straightforward: a 25ft cable and wide participation in utility demand-response rebate programs. The sections below break the published figures down and set them against the other home chargers sold in the United States.

Specs & installation

Output is 9.6kW (40A), which adds roughly 34 miles of range per hour on a typical EV and puts it among the weakest for speed in this market. J1772 is the universal AC connector in North America. Every non-Tesla EV takes it directly, and Teslas use the adapter supplied with the car.

It is tethered: the 7.6m cable is permanently attached, which is more convenient day to day but fixes your reach — above average for cable length here. Measure the distance from your intended wall position to where the car's charge port sits when parked.

Installation is a job for a qualified electrician, not a DIY task. Expect a dedicated 240V circuit and breaker sized for the unit's amperage, an isolator, earthing checks and, in many homes, some load assessment on the main supply. The unit is rated NEMA 4, outdoor rated. Fitting typically adds a few hundred USD on top of the unit price, more if a long cable run or a consumer-unit upgrade is needed.

Smart features

Published smart capability covers app control, scheduled charging, energy tariff integration — below average against the rest of the United States field.

Scheduling lets you set charging windows so the car fills up overnight. Utility-plan integration means it can shift charging into off-peak rate windows and, on many networks, qualify for demand-response rebates.

Price & value

At about $549 for the unit, it sits at the upper-middle of the home chargers we list for the United States. Add installation on top; that cost depends far more on your property than on which unit you pick.

The 3-year warranty is among the weakest for this market. A charger is a fixed appliance that lives outdoors for a decade or more, so warranty length and the manufacturer's track record matter more than a small difference in purchase price.