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The Charge Curve

HUB 04 · Charging Costs

Mercedes EQB, EQE & EQS: Home Charging Time and Cost

Mercedes specs a conservative ~9.6 kW across its US EQ range - fine for the EQB, worth planning around on the EQS's big pack.

By Stephen V.Updated How we compare
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Mercedes' US EQ models - EQB, EQE, EQS - spec a conservative onboard charger of about 9.6 kW (40 amps) through a J1772port. On the EQB's ~66 kWh pack that is unremarkable; on the EQS's ~108 kWh flagship battery it makes the overnight window worth actually planning, because the big pack at the modest rate uses most of it.

How long it takes and what it costs

At 9.6 kW, a 10-to-80-percent top-up runs about 4.5 hours on the EQB, ~6.5 on the EQE, and about 8 hours on the EQS - still an overnight, but one that wants the car plugged in by evening rather than midnight. Costs at the US average rate: about $7, $10 and $12 respectively; the calculator below runs your pack and rate.

Run it for your car

Cost-to-charge calculator

Put in your electricity rate, your battery size and your car's efficiency. The math is the same one shown above, with a 10% charging loss included so the number is realistic.

$8.09
A 10% to 80% charge
$11.56
A full (empty to 100%) charge
$0.05
Cost per mile
$5.08
Cost per 100 miles

Estimate only. Actual cost depends on your exact utility rate (including any time-of-use pricing and fees), your car's real efficiency, temperature, and charging losses. Check your electric bill for your true rate.

The charger to use

A 40-amp chargermatches the 9.6 kW rate exactly - a 48-amp unit adds headroom the car won't use today, worth it only if the garage's next EV might. Nightly plug-in discipline (and off-peak scheduling) suits the EQS pattern especially well, and a NACS-to-J1772 adapter opens Tesla-style equipment.

Questions

Frequently asked

How long does a Mercedes EQS take to charge at home?

About 8 hours for a 10-80% top-up at its ~9.6 kW onboard rate - the ~108 kWh pack is the largest thing the modest rate has to fill. Plugged in by evening, it's a non-issue; the habit matters more here than on smaller-pack EVs.

Do I need a 48-amp charger for a Mercedes EQ?

No - the US EQ range accepts ~9.6 kW (40 amps), so a 40-amp charger delivers the full rate and a 48-amp unit adds nothing these cars can use. Size up only if a future EV in the household will take the extra.

Keep reading

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Receipts

Sources

We do not run a testing lab, and we do not pretend to. Where a measured number came from someone else's lab, we name them and link them. Where we could not verify something, we say so on the page rather than quietly leaving it out. Read our full method.