As households increasingly adopt multiple electric vehicles, a common question arises: can you charge two EVs from one home charger? Here's how to make it work.
The Short Answer
Yes, but not simultaneously at full speed from a single charger. You have several options:
Option 1: Sequential Charging (One Charger, Take Turns)
How It Works
Charge one car, then manually swap to the other:
Pros and Cons
| Pros | Cons |
|---|---|
| No additional hardware cost | Requires manual intervention |
| Uses existing single charger | Someone has to swap cables |
| Full charging speed for each car | Can't "set and forget" both cars |
Making It Work
Smart charger scheduling:
Practical for: Households where someone is home in the evening to swap cables.
Option 2: Dual Charger / Load Sharing
How It Works
Some charger brands offer dual-output units or load-sharing systems:
Available Products
| Product | Type | Power Sharing | Price |
|---|---|---|---|
| Zappi Dual | Two separate units, linked | Yes | £1,800–2,200 |
| Ohme Home Pro (paired) | Two units, load balanced | Yes | £1,400–1,800 |
| Pod Point Twin | Dual output | Yes | £1,200–1,600 |
| Wallbox Pulsar Plus (paired) | Two units, linked | Yes | £1,400–1,800 |
Power Sharing Explained
Your electrical supply has limits. A typical home has:
With two cars charging:
Example Scenario
| Time | Car 1 | Car 2 | Total |
|---|---|---|---|
| 8pm–10pm | 3.5kW | 3.5kW | 7kW |
| 10pm–12am | 7kW (alone) | Finished | 7kW |
| 12am–6am | Finished | Charging if needed | 7kW |
Result: Both cars charge overnight, no manual intervention needed.
Option 3: Two Separate Chargers with Load Management
How It Works
Install two independent chargers, but with a system that manages total power draw:
Requirements
Cost
| Item | Cost |
|---|---|
| Two chargers | £1,000–1,800 |
| Installation (combined) | £600–1,000 |
| Load management | Often included in smart chargers |
| Total | £1,600–2,800 |
Electrical Considerations
60A supply:
80–100A supply:
Option 4: Upgrade Your Electrical Supply
If You Need More Power
Single phase to three phase:
Cost: £3,000–7,000 for three-phase installation
When it's worth it:
For most households: Load sharing on single phase is sufficient.
Practical Considerations
How Much Charging Do You Actually Need?
Before investing in dual charging, calculate your actual needs:
| Daily Mileage | Nightly Charging Needed | Time on 7kW |
|---|---|---|
| 30 miles | ~10kWh | 1.5 hours |
| 50 miles | ~15kWh | 2 hours |
| 80 miles | ~25kWh | 3.5 hours |
Two cars, 50 miles each:
Reality: Most two-EV households can manage with sequential charging or light load sharing.
Overnight Charging Window
Typical off-peak tariff: 11pm–5am (6 hours) or 12am–5am (5 hours)
Available charging:
For two average EVs: 42kWh covers ~150 miles of driving — plenty for most households.
When You Need Simultaneous Charging
Consider dual/load-sharing if:
Installation Options
Adding a Second Charger
| Approach | Pros | Cons |
|---|---|---|
| Same brand, paired | Easy load sharing | Limited to one brand |
| Different brands, CT clamp | Flexibility | May need extra equipment |
| Independent chargers | Simplest | Must manage manually or risk overload |
Installation Costs
| Setup | Typical Cost |
|---|---|
| Single charger (baseline) | £800–1,200 |
| Second charger added later | £600–1,000 |
| Dual installation (together) | £1,400–2,200 |
| Load management system | Often included or £100–200 |
Tip: Installing two chargers at once is cheaper than adding one later.
What About a Three-Pin Plug for the Second Car?
The Option
Use the home charger for one car and a three-pin "granny charger" for the other.
| Charger | Speed | Overnight (8 hours) |
|---|---|---|
| 7kW dedicated | 25 miles/hour | 200 miles |
| 2.3kW three-pin | 8 miles/hour | 64 miles |
When This Works
Limitations
Recommendations by Situation
Two Low-Mileage EVs (Under 30 miles/day each)
Best option: Single 7kW charger, sequential charging
Why: Both cars easily charge overnight, no extra cost needed.
Two Moderate-Mileage EVs (30–60 miles/day each)
Best option: Single smart charger with scheduling OR dual charger with load sharing
Why: May need both to charge, but load sharing keeps things simple.
Two High-Mileage EVs (60+ miles/day each)
Best option: Dual charger setup with load sharing, or supply upgrade + two independent chargers
Why: Need maximum charging capacity to keep both cars ready.
One EV Now, Likely Two Later
Best option: Install one charger now, plan cabling for second
Why: Future-proofing saves money on installation later.
Summary
| Approach | Cost | Best For |
|---|---|---|
| Single charger, swap cables | £0 extra | Low mileage, someone home evenings |
| Smart scheduling | £0 extra | Different departure times |
| Dual charger with load sharing | £600–1,200 extra | Convenience, no manual intervention |
| Two independent chargers | £800–1,400 extra | Maximum flexibility |
| Three-pin backup | £100–200 | Very low mileage second car |
The bottom line: Most two-EV households manage fine with a single charger and smart scheduling. If you want set-and-forget convenience for both cars, a dual charger or load-sharing setup is worth the investment — but it's a convenience purchase, not usually a necessity.