A 3.6kW EV charging cable is the entry-level Mode 3 cable, 16A single-phase, charging at about 13-14 miles of range per hour. It's slower than the 7.4kW cables most UK home wallboxes use, but there are real reasons buyers choose it: low-current public chargers, caravan-park hook-ups, older cars that cap their AC at 3.6kW, and budget-conscious second cables.
What "3.6kW" really means
EV cables don't generate power: they carry it from the source to the car. A 3.6kW (16A) rating describes the cable's maximum current capacity. The actual charging speed is determined by the lowest of three things: the source's output, the cable's rating, the car's onboard AC charger limit. So:
- 16A wallbox + 16A cable + 7kW car = charges at 16A (3.6kW). Cable is the bottleneck.
- 32A wallbox + 16A cable + 7kW car = charges at 16A (3.6kW). Cable is the bottleneck.
- 32A wallbox + 32A cable + 16A car = charges at 16A (3.6kW). Car is the bottleneck.
When 3.6kW is the right choice
- Caravan and motorhome charging: sites typically offer 16A blue Commando hook-ups; a 3.6kW Type 2 cable matches the supply.
- Older EVs with a 3.6kW onboard limit: first-gen Nissan Leaf, original Outlander PHEV, some early Renault Zoes. A 7.4kW cable is wasted on these cars.
- Backup / second cable: kept in the boot at lower cost than a full 7.4kW cable. Light, compact, fits in a small bag.
- Some workplace and apartment AC chargers are 16A only, especially older Pod Point and BP Pulse public installs from 2017-2019.
When 3.6kW is the wrong choice
If you're buying a primary cable for daily home charging on a 7kW wallbox, a 7.4kW cable doubles your charging speed and only costs marginally more. The maths: 7.4kW adds 25-30 miles per hour; 3.6kW adds 13-14. For a typical 60kWh battery, 3.6kW takes 16 hours from empty; 7.4kW takes 8 hours. If you charge daily at home, 7.4kW is almost always the right answer.
Connector type and length
Most 3.6kW cables are Type 2 to Type 2 (UK and European standard). Type 1 to Type 2 3.6kW cables exist for older Leafs and similar, see the Type 1 to Type 2 collection. Lengths from 5m through to 15m are widely available; 5m is most common, 7m or 10m offers more flexibility.
3.6kW vs granny charger: what's the difference?
Both deliver about 3kW. The difference is the source-end connector:
- Granny charger: UK 3-pin domestic plug → Type 2. For household sockets only.
- 3.6kW Mode 3 cable: Type 2 → Type 2. For wallboxes and public AC chargers only.
A granny charger plugs into the wall; a 3.6kW Mode 3 cable plugs into a Type 2 socket. They're not interchangeable.
Build quality at the budget end
3.6kW cables are often the cheapest in the catalogue, but cheap doesn't have to mean unsafe. Hold the line on:
- IEC 62196-2 certified Type 2 connectors: non-negotiable for any UK Mode 3 cable.
- IP44 weatherproofing minimum.
- OFC copper, not CCA: copper-clad aluminium cables run hot and degrade.
- 2-year UK warranty minimum from a UK retailer.
Related
- 7.4kW cables: the UK home standard.
- Granny chargers: for UK 3-pin sockets.
- Type 2 to Commando: for caravan and industrial sockets.