⚖️ Comparison · Updated for 2026

Slow/Fast home charging vs Rapid/Ultra-rapid public charging

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: 7 kW home fast charger: adds ~35-40 miles/hour, charges a typical EV (75 kWh battery) overnight (10-11h). 50 kW public rapid: adds ~150 miles/hour, 80% charge in 35-45 minutes. 150-350 kW ultra-rapid: 80% charge in 15-25 minutes. Most daily drivers never need public rapid charging if they charge at home.
Decision guide — when to use which
Use Slow/Fast home charging when…

All daily driving: home overnight charging is the most convenient and cheapest.

Use Rapid/Ultra-rapid public charging when…

Long journeys, no home charging, urgent top-up needed.

📊 Side-by-side comparison
Aspect Slow/Fast home charging Rapid/Ultra-rapid public charging
Power 3.6 kW (slow) / 7.4 kW (fast home) 50 kW (rapid) / 150-350 kW (ultra-rapid)
Miles per hour added ~18 (3.6 kW) / ~35 (7 kW) ~150 (50 kW) / 450+ (350 kW)
Typical charge time (75 kWh) Overnight 35-45 min (50 kW) / 15-25 min (350 kW)
UK cost (2026) ~26p/kWh (home tariff, price cap) ~65-80p/kWh (public rapid)
Connector (UK) Type 2 (home) CCS / CHAdeMO (rapid)

Frequently asked

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Should I charge to 100% every night?

No — most EV manufacturers recommend charging to 80% daily to preserve battery life, with 100% reserved for long journeys. Lithium batteries degrade faster at sustained high charge levels. Some EVs have a 'target charge' setting for this.

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How much does an EV really cost per mile to run?

At about 26p/kWh (the Ofgem price cap rate from October 2026), a typical EV uses 3-4 miles/kWh, costing roughly 6.5-9p/mile. Vs petrol at an example 140p/litre and 40 mpg (check current pump prices): 15.9p/mile. EVs are roughly half the fuel cost of a petrol car for home-charged miles.

Reviewed for 2026. This comparison is general guidance based on publicly available information. Prices, rates, rules and specifications change, so check current details with the provider or an official source before making a decision. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

Should I charge to 100% every night?

No — most EV manufacturers recommend charging to 80% daily to preserve battery life, with 100% reserved for long journeys. Lithium batteries degrade faster at sustained high charge levels. Some EVs have a 'target charge' setting for this.

How much does an EV really cost per mile to run?

At about 26p/kWh (the Ofgem price cap rate from October 2026), a typical EV uses 3-4 miles/kWh, costing roughly 6.5-9p/mile. Vs petrol at an example 140p/litre and 40 mpg (check current pump prices): 15.9p/mile. EVs are roughly half the fuel cost of a petrol car for home-charged miles.