Volume IV · Issue 02 · Spring 2026
The Journal
Engineering notes, material studies, field reports and essays on the slow domestication of the kilowatt-hour. Published when we have something worth saying.
Design · 6 min
The quiet revolution of the home wallbox
When we set out to design the Arc Wallbox, the brief was almost embarrassingly simple: a customer should be able to forget it exists.Designing for absenceMos...
Field Notes · 9 min
Field notes: 4,000 km across Norway in a Polestar 3
Our team took a winter expedition north of the Arctic Circle, stress-testing portable chargers in -20°C. Here's what survived.
Engineering · 6 min
Why we chose liquid cooling over thicker copper
Pushing 500 amps through a hand-held connector is, on paper, an unreasonable thing to ask a piece of consumer hardware to do.The mass problemA passively cool...
Essay · 7 min
The grid is the product
Bidirectional charging is finally arriving in the UK. We argue it changes everything about what a wallbox is for.
Buying Guide · 6 min
Octopus Intelligent, explained — and which chargers actually work with it
The cheapest tariff in Britain only works with a handful of wallboxes. Here's the list, and how to choose between them.
Field notes · 6 min
Field notes: charging across the Alps in February
We left Stuttgart at first light with a Taycan, an Ioniq 6, an EV9 and a Model Y, the boot of each loaded with a single Voyage Portable kit. The plan was to ...
Comparison · 8 min
Andersen A2 vs Zappi: which is right for you?
Two beloved British wallboxes, two very different philosophies. We unpick the differences with our buying team.
Design · 6 min
The grammar of a good connector
A connector is a sentence the user reads with their hands. The shape of the grip, the resistance of the latch, the click that confirms a good seat — each is ...
Technology · 8 min
OCPP, demystified — and why it matters at home
An open protocol you've never heard of is quietly reshaping the home charging market. Here's what it means for your next purchase.
Essay · 5 min
Why we only stock products with 3-year warranties
Our buying policy explained: a quiet promise to our customers about durability, repairability, and the products that don't make our shelves.
Essay · 10 min
The quiet revolution in domestic energy
Time-of-use tariffs, V2H, and the slow domestication of the kilowatt-hour.