It means the charger carries its own electricity meter inside the case. That meter counts the energy that passes through the charger — session by session and as a running total — and shows the figures on its screen, in its app or in its session records. It is a separate counter from the utility meter that bills your property, and the two numbers do different jobs.
Key Takeaways
- A built-in meter counts only the energy that passes through that charger.
- It is separate from the utility meter, which counts the whole property and carries the bill.
- “Energy monitoring” means the display class unless a listing states a billing approval.
- Billing third parties needs the evaluated class — a written-confirmation item on any order.
Two Meters, Two Jobs
Most charging homes now have two meters counting electricity. They are easy to confuse and never interchangeable.
| Built-in meter in the charger | Utility meter | |
|---|---|---|
| What it counts | Only the energy this charger delivers | Everything the property uses |
| Who reads it | You — on the screen, in the app or in records | The utility, for billing |
| What its number settles | Your own tracking and informal cost splits | The electricity bill itself |
Because the two counters cover different loads, their figures will not match — the built-in meter never sees the rest of the house. The utility side of the picture, including whether you need a smart meter at all, is covered in our guide to smart meters for EV chargers.
One Phrase, Two Classes of Meter
“Built-in meter” covers two very different things, and the listing’s wording tells you which one you are looking at. The first is a display and records meter: a functional internal meter whose figures inform you. Its accuracy is a quality point, but nothing certifies the number for billing. The second is an evaluated meter: a meter design that has been examined and approved for billing use in that market, under that market’s metrology system. A product page that says “energy monitoring” is describing the first class unless it also states an approval. The markings on the unit itself are part of the evidence, as our guide to rating labels and required markings explains. Where a bill will rest on the number, the class — and the certificate behind it — is a question to settle in writing before ordering.
What the Built-In Figure Is Good For — and Where It Stops
Used for its own job, the built-in count is genuinely useful:
- Tracking your charging cost. Session figures turn into a monthly charging total in your own records.
- Spotting odd sessions. A session that ran far longer, or delivered far more, than expected shows up immediately.
- Informal cost splits. A housemate or family member can settle up by agreement from the charger’s own figures.
- Choosing a tariff. Your real session pattern is better evidence than a guess when comparing tariffs.
It stops at three lines. It cannot bill the public or tenants as a business — that needs the evaluated class and whatever the local rules require. It cannot dispute the utility bill, because the utility meter is the billing instrument and the two counters measure different things. And it cannot satisfy a programme that names the meter it accepts; that programme’s document decides.
Built-In Meters on EVDANCE Chargers
The EV-ACS3210E 32A Type 2 portable charger is described with an app and energy monitoring — display-class records you can read in the app. The EV-AC03201T dual-connector AC station runs its session records to the operator’s platform over OCPP 1.6J. No EVDANCE page states a meter approval or accuracy class for these models, so if billing use is the plan, treat the meter class and its certificate as a written-confirmation item — contact us before ordering.
Frequently Asked Questions
Is a built-in meter the same as a smart meter?
No. A smart meter is the utility’s meter for the whole property. A built-in meter is the charger’s own counter and counts only the energy that charger delivers.
Can I charge a tenant from the built-in figure?
An informal split by agreement between you is your own arrangement. Selling electricity by the kilowatt-hour as a business falls under local rules and needs an evaluated, billing-approved meter.
Why is the charger’s total lower than the EV share of my bill?
The built-in meter counts only the charger. The bill counts the whole home, and the car counts only what its battery kept — three counters, three different jobs, so three different numbers.
Related Reading
- Do You Need a Smart Meter for an EV Charger?
- Rating Labels and Required Markings on EV Chargers
- EV Charger Certifications Explained: CE, UKCA, UL, ETL, CB and What Buyers Should Ask For
