Look at almost any EV charger spec sheet and you will see an “IP” number. It is one of the most useful specs on the page, because portable chargers in particular spend their lives on driveways, in garages and out in the weather.
How to read an IP rating
IP stands for Ingress Protection. The two digits rate protection against solids and against water:
- First digit (0–6): solids and dust. A 6 means dust-tight.
- Second digit (0–9): water. Higher generally means tougher conditions.
IP65 vs IP66 vs IP67
- IP65: dust-tight, protected against water jets from a nozzle
- IP66: dust-tight, protected against powerful water jets
- IP67: dust-tight, protected against temporary immersion in water (tested to 1 metre for 30 minutes)
For a control box that may sit in a puddle during a downpour, IP67 is the one to look for. Our Pro Series portable chargers are rated IP67.
What the rating does not cover
The IP rating applies to the part that was tested, usually the control box. It does not make every connection waterproof:
- The wall outlet and plug should be weatherproof and sheltered, or under cover.
- Keep plug-to-adapter connections off wet ground.
- Never charge through damaged cables or a cracked enclosure, whatever the rating.
- When the Type 2 connector is unplugged, put its cap back on to keep water and dirt out of the pins.
Charging in the rain: a quick checklist
- Use a weatherproof outlet with its cover, or one under a carport or eave.
- Lay the control box where water drains away.
- Keep the plug end and any adapter off the ground.
- Plug into the outlet first, then the car. Unplug in reverse.
EVs and their charging connectors are designed to be used in the rain. The car will not start charging until it confirms a safe connection through the control pilot handshake.
Why we chose IP67
Because portable chargers really do get rained on. Combined with our other protections, including earth leakage, over-temperature and a self-test at every power-up, it means one less thing to worry about. Read more in RCDs, earth leakage and the protection inside your charger.
Frequently asked questions
Can I leave a portable charger outside?
An IP67 control box handles rain, but the plug and wall outlet still need to be weatherproof or sheltered. Store the charger in its case when not in use to extend its life.
Is IP67 better than IP66?
For immersion, yes. IP66 is tested against strong jets, while IP67 is tested for temporary submersion, which is closer to a control box sitting in a puddle.
Is it safe to charge an EV in the rain?
Yes, with certified equipment and a weatherproof or sheltered outlet.
Key takeaways
- IP ratings cover dust (first digit) and water (second digit)
- IP67 means dust-tight and protected against temporary immersion
- The outlet and plug connections still need shelter
- Cap the connector and check cables for damage