180 kW DC Charger: What It Really Delivers and When It Beats 120 kW

Direct answer: A 180 kW DC charger can supply up to 180 kW in total, but each car also depends on connector current and battery voltage. The HG Power Genesis 180 kW unit allows 250 A per connector, so a 400 V car peaks near 100 kW and a 697 V car near 174 kW.

That changes why you buy this charger. On one car with a 400 V battery, a 180 kW unit and a 120 kW unit with the same 250 A limit reach about the same peak. The gain appears when two cars charge together, or when your vehicles run on 800 V platforms.

What does a 180 kW charger actually deliver?

It delivers the lowest of three limits: the power budget available to that connector, the connector current multiplied by battery voltage, and what the vehicle requests. The 180 kW figure is the cabinet maximum, not the power every driver will see on the screen.

DC power is voltage multiplied by current. Our Genesis 180 kW sheet lists 200–1000 Vdc output and 250 A per connector, so the connector limit moves with the battery voltage:

One manufacturer’s guide says a 180 kW charger can charge most 400 V cars at their maximum rate. That is only true when the connector can carry enough current. Reaching 170 kW at 357 V needs about 476 A, almost twice our 250 A connector limit, so always read the current figure next to the power figure.

The same logic explains 150 kW units. If a 150 kW unit also has 250 A connectors, it needs 600 V to reach its rating, so a 400 V car sees no difference between a 150 kW and a 180 kW rating. The gap appears on 800 V cars and when two cars share.

The Port Power Test

Use the worst case of your fleet, not the best. If your vehicles are mixed, run the test for the lowest-voltage model you plan to serve, because that car feels the current limit first.

Real output on three common EVs

On our 250 A connector, a Tesla Model Y Long Range tops out near 89 kW, a BYD Atto 3 near 101 kW, and a Hyundai Ioniq 5 near 174 kW. These are estimates at nominal voltage, the battery’s typical voltage. Battery voltage changes during a session, so the real limit moves around these numbers.

Here is what that does to a 10–80% charge:

• Tesla Model Y: EV Database lists 27 minutes at an average of 124 kW. At about 89 kW, its 52.5 kWh takes about 35 minutes.
• Hyundai Ioniq 5: EV Database lists 17 minutes. At about 174 kW, its 51.8 kWh takes about 18 minutes at best, and likely longer.
• BYD Atto 3: It averages 75 kW, below the limit near 101 kW, so its listed 36 minutes should not change.

Some guides, and Google’s AI summary for this search, say a 180 kW charger takes a car from 10% to 80% in 20 to 30 minutes. That can hold for 800 V cars, or where the connector carries more current. On our 250 A connector, a 357 V car needs about 35 minutes.

These are estimates, not test results. A car sits below nominal voltage at low charge and above it at high charge, so a 400 V car can briefly pass these limits. The figures also assume one connector can use the whole cabinet when it is alone. Temperature and battery condition can also reduce power. Test your own vehicle before you plan a fleet schedule around a number.

120 kW vs 180 kW: the second-car test

Choose 180 kW over 120 kW when two cars often charge at the same time. If power splits equally, each car gets 90 kW instead of 60 kW. With one car on a 400 V battery, both units have the same 250 A limit and reach about the same peak.

Each time is the energy divided by the lowest of three figures: the car’s listed 10–80% average, its connector limit and its share of the cabinet. That sum can differ slightly from listed times. Real sessions take longer, because no car holds steady power from 10% to 80%.

The key result is the Model Y. On a shared 180 kW unit it loses almost nothing, because 90 kW is already above its 89 kW connector limit. On a shared 120 kW unit the same car needs about 18 more minutes. That is the main reason to choose 180 kW for a busy 400 V site.

Why 90 kW each? We assume an equal split. The module layout in our CCS1-edition user manual shows six 30 kW power modules in the 180 kW cabinet and four in the 120 kW cabinet, and each connector has its own charging session and output meter reading. The manual does not say how modules are assigned to connectors. So two assumptions in this guide need confirming for your order: the equal split, and one connector using the whole cabinet when it is alone. Our guide to dual-gun power allocation explains the common rules.

How much power does a 180 kW charger need?

The HG Power Genesis 180 kW unit draws 290 A at 380 Vac, which works out to about 191 kVA of supply capacity. That is about 63 kVA more than the 120 kW unit, so check spare site capacity before you choose the larger charger.

The sum is √3 × 380 V × 290 A ÷ 1000 = 190.9 kVA. Supply must stay within 380 Vac ±15%, or 323–437 V, at 50/60 Hz, wired as L1+L2+L3+N+PE. A site on 220 V three-phase needs a transformer or a different product, so raise it early.

One 180 kW unit serves two 400 V cars almost as well as two 120 kW units and needs about 64 kVA less supply. Choose two units when you need four parking bays, or a backup if one unit stops. A higher input can also raise your bill where the tariff includes demand charges, so ask your utility. Where a 125% continuous-load rule applies, as in Article 625 of the US National Electrical Code (2017 edition, shown as an example), the breaker for 290 A must be at least about 363 A. The final size is the next standard size allowed by local rules, so have your electrician confirm it.

To check spare capacity step by step, use our EV charging transformer sizing guide.

Which charger should you choose?

Choose by vehicle voltage and how often both connectors are busy, not by the label. A 180 kW unit suits busy 400 V sites and 800 V vehicles. A 120 kW unit suits single-car use on limited supply. Faster single-car charging on 400 V needs more connector current.

Our advice: do not buy 180 kW to make one 400 V car faster. Buy it to keep two cars moving, or because your fleet runs on 800 V. If neither applies, a 120 kW unit costs less supply capacity. You can compare the wider range on our DC EV chargers page.

HG Power 180 kW specifications

These figures come from the Genesis 180 kW CCS2 specification sheet, with module and drawing details from our user manual. The product is sold with our 120–180 kW commercial DC fast charger. Other connector types are available by order, so check the sheet for your exact configuration.

For orders, stock units start from one unit, lead time is 30–35 days after full payment, and warranty is two years. Custom configurations, samples and their timing are agreed directly with our sales team. See our certifications and ask for the documents that match your model.

How much does a 180 kW charger cost?

In a Google check on 5 November 2026, we saw three listings on China marketplaces at about US$8,000 to US$17,000, and eight US listings at about US$25,000 to US$90,000. These are listed unit prices from a small sample, not delivered or installed project costs.

We did not open each vendor page, so we cannot say what each price includes, or whether each unit is new or has two connectors. We left out one US$200 used listing and one diesel trailer unit. When you compare offers, check connectors, payment terminal, certification, freight, duty, commissioning and after-sales support. Budget separately for installation and supply work.

Prices depend on connectors, payment options, network, cable and shipping terms, so we quote each project rather than publish a list price. Our commercial charging cost guide shows how to build a full project budget.

What to confirm in a quote

Two 180 kW quotes can behave very differently on site. Ask every supplier for these points in writing, whichever brand you choose:

• Current per connector. Without it, you cannot work out power on a 400 V car.
• Split rule. Is it equal, stepped or dynamic, and what is the smallest step?
• Input current and kVA. Use the rated figures, not the output kW, for supply design.
• Output at high temperature. Our manual says power is derated above 55 °C ambient but gives no curve, so ask for it in writing.
• Exact certificate scope. The model on the certificate should match the model in the quote.

If you are building in the US with federal NEVI funding, check the rule first. On designated corridors it asks for up to 150 kW from each port at the same time, which one 180 kW unit shared by two cars cannot supply. Stations there also need at least four ports. This 380 Vac CCS2 unit is not a US configuration, so US projects need a US-voltage model.

Five questions buyers ask

Can a 180 kW charger charge two cars at once?

Yes. The HG Power Genesis 180 kW unit has two CCS2 connectors, each with its own charging session. The sheet lists 180 kW in total, so an equal split would give up to 90 kW each. Confirm the split rule for your order.

How long does a 180 kW charger take to charge an EV?

It depends on the car more than the charger. On a 250 A connector, we estimate about 18 minutes for a Hyundai Ioniq 5 from 10–80%, and about 35 minutes for a Tesla Model Y. Real sessions usually take longer than these steady-power estimates.

Is a 180 kW charger faster than a 120 kW charger?

Sometimes. With one 400 V car and the same 250 A limit, peak power is about the same. A 180 kW unit is faster for 800 V cars, which can pass 120 kW. It is also faster when two cars share, at 90 kW each instead of 60 kW if split equally.

What electrical supply does a 180 kW charger need?

The HG Power Genesis 180 kW unit needs a three-phase 380 Vac supply with neutral and earth, at 290 A or about 191 kVA. Your electrician then sizes cables and protection to local rules, and the utility confirms that spare capacity is available.

How much does a 180 kW EV charger cost?

A small Google check on 5 November 2026 showed about US$8,000 to US$17,000 on China marketplaces and about US$25,000 to US$90,000 from US listings. Those are listed unit prices. Freight, duty, installation and software change the final cost, so compare complete quotes.

Sources

• EV Database: Tesla Model Y Long Range AWD (2022–2025)
• EV Database: Hyundai IONIQ 5 Long Range 2WD (MY22)
• EV Database: BYD ATTO 3 (MY25)
• Google Search results and shopping listings for “180kw ev charger price”, viewed 5 November 2026 (listings not archived)
• Cornell LII: 23 CFR 680.106, EV charging infrastructure requirements
• Ekoenergetyka: choosing between 180 kW and 400 kW DC fast chargers
• EC&M: The Apprentice’s Guide to Article 625 (2017 NEC)
• HG Power Genesis 120, 180 and 360 kW CCS2 specification sheets; HG Power 120–480 kW DC charger user manual

Technical review: Marvin Zhou. Reviewed 5 November 2026.