Type of EV charger for 2 Wheeler; A comprehensive Guide while buying 2 wheeler along with charger or buying charger Separately

 From an electrical-engineering and home-installation perspective, the most important point is that for a 2-wheeler EV, you should not select a charger only by looking at “kW” or charging speed. Vehicle compatibility, protection, wiring, earthing and the available sanctioned load are equally important.

India has the IS 17017 series covering EV conductive charging systems, including AC charge points for light electric vehicles and DC EVSE. BIS also references requirements covering protection against electric shock, overload/short circuit, connectors and cable assemblies. Bureau of Indian Standards

1. Types of EV chargers for electric 2-wheelers

A. Portable / Plug-in Charger — most common for homes

This is the charger supplied with many electric scooters.

Typical characteristics:

• Input: 230 V AC, single phase
• Output: commonly around 0.5–1.5 kW for many 2-wheelers
• Plugs into a suitable 16 A socket
• Portable
• Usually supplied with the vehicle

Example:

230 V AC → Charger → Scooter Battery/BMS

Advantages

• Low installation cost
• Portable
• Can be used at different locations
• Suitable for overnight charging

Disadvantages

• Slower charging
• Socket and wiring quality become very important
• Ordinary household extension boards should generally be avoided

My recommendation: For a normal home user who rides 30–60 km/day, this is often sufficient.

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B. Wall-mounted AC EV Charger

A dedicated wall-mounted EVSE can provide a more permanent installation.

Typical power levels may include:

Charger	Approx. current at 230 V	Approx. input power
1.0 kW	4–5 A	1.0 kW
1.5 kW	6–7 A	1.5 kW
2.0 kW	9 A	2.0 kW
3.3 kW	14–15 A	3.3 kW
7.2 kW	~32 A	7.2 kW

Important: Don't assume that a 7.2 kW charger will charge a scooter at 7.2 kW. The vehicle's onboard charger/BMS determines the maximum charging power.

For many electric scooters, installing a very high-power charger therefore provides little benefit.

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C. Smart EV Charger

A smart charger adds communication and monitoring.

Possible features:

• Wi-Fi/Bluetooth
• Mobile application
• Charging history
• Energy consumption
• Scheduled charging
• Current/power adjustment
• Remote start/stop
• Charging notifications
• RFID in some models

For a home, I particularly like scheduled charging because you can charge during a preferred time window.

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D. DC Fast Charger

DC chargers directly supply controlled DC power to the vehicle/battery system.

They can provide much higher charging power, but:

• They are more expensive.
• Installation is more complicated.
• They require compatible vehicle hardware.
• They are generally unnecessary for ordinary home charging of a 2-wheeler.

For most residential users, AC charging is the practical choice.

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E. Battery Swapping

This isn't technically a conventional charger installed beside your scooter.

The discharged battery is exchanged for a charged battery.

It can be useful for certain commercial/fleet applications, but it depends completely on the manufacturer's battery-swapping ecosystem.

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2. Charging modes — an important distinction

Don't confuse charger type with charging mode.

EV charging standards distinguish different modes of connection and control. BIS's IS 17017 framework covers charging modes, communications and protection requirements. BIS LIMS

For a home user, the practical distinction is:

Mode 2

Portable charging cable/charger connected to a normal AC supply with an in-cable control and protection device.

This is very common for electric scooters.

Mode 3

Dedicated EVSE/AC charging equipment with more sophisticated control and protection.

This is more common with dedicated wall-mounted charging installations.

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3. How should you install an EV charger at home?

As an electrical engineer, I would recommend the following arrangement:

          UTILITY SUPPLY

               │

               │

        MAIN DISTRIBUTION

             BOARD

               │

        ┌──────┴──────┐

        │             │

 Existing Loads    EV CIRCUIT

                      │

                MCB/RCBO

                      │

               RCCB/RCBO

                      │

               SPD (if required)

                      │

              ISOLATOR

                      │

                EV CHARGER

                      │

                 EV SCOOTER

The exact protection arrangement should be designed according to the charger manufacturer's instructions and the applicable electrical installation requirements.

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4. Separate circuit — VERY IMPORTANT

I strongly recommend that a dedicated EV charging point be provided rather than simply using an existing multi-purpose socket.

For example:

Bad arrangement

One socket

   │

   ├── Refrigerator

   ├── Washing Machine

   ├── Iron

   ├── Heater

   └── EV Charger

This can overload the circuit.

Better arrangement

Main DB

   │

   └── Dedicated EV MCB/RCBO

            │

            └── Dedicated cable

                    │

               EV Socket/EVSE

                    │

                  Scooter

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5. What size wiring?

This depends on:

• Charger current
• Cable length
• Installation method
• Ambient temperature
• Voltage drop
• Grouping of cables
• Local electrical code
• Manufacturer requirements

For a typical 16 A single-phase charging point, an electrician may consider a suitably sized copper circuit such as 3-core 2.5 mm², but this should not be treated as a universal specification.

For a long cable run or higher-power charger, the required cable size may need to be increased.

The correct approach is:

Load current → cable ampacity → voltage drop → protective device → installation method

rather than simply choosing a cable based on charger kW.

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6. Earthing is critical

This is one of the most important aspects of EV charging.

The charging point should have a reliable protective earth (PE).

Do not accept:

"Earth connection ki zaroorat nahi hai, charger mein protection hai."

That is not a good installation philosophy.

The electrician should verify:

• Earth continuity
• Earth conductor
• Protective-device operation
• Polarity
• Insulation condition
• Socket condition
• Appropriate RCD/RCCB/RCBO protection

IS 17017 requirements include protection against electric shock and other electrical safety requirements. BIS LIMS

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7. RCCB/RCBO — don't ignore this

EV charging involves equipment connected for several hours and therefore leakage protection deserves particular attention.

Depending on the charger design, the manufacturer's instructions may specify:

• Type A RCCB/RCBO
• Type B RCCB
• DC residual-current detection incorporated in the EVSE

Don't simply tell the electrician: "Put any RCCB."

Check the manufacturer's installation manual.

The protection arrangement should be coordinated with the charger's built-in DC leakage detection, if provided.

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8. MCB selection

Suppose your charger consumes approximately:

2 kW

At 230 V:

I = P/V

I = 2000/230= approx 8.7A

For a 3.3 kW charger:

I = 3300/230 =approx 14.3A

Therefore, the circuit protection and cable need to be selected considering the continuous nature of EV charging, not simply by matching the MCB rating to the calculated current.

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9. Check your home's sanctioned load

This is particularly important in Indian houses.

Suppose:

Existing sanctioned load = 5 kW

Existing simultaneous load:

• AC = 2 kW
• Refrigerator = 0.3 kW
• Washing machine = 0.5 kW
• Lighting = 0.3 kW
• Other loads = 1 kW

You could already be around:

4.1 kW

Adding a:

3.3 kW EV charger

could potentially take the demand beyond the available capacity.

Therefore, before installing a higher-power charger:

Check

Sanctioned load + existing demand + EV charger load

If necessary, discuss load enhancement with the electricity distribution company.

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10. Installation in an apartment

Apartment installation needs additional consideration.

Individual parking slot

If you have an allocated parking space, check:

1. Society/RWA permission
2. Electricity meter arrangement
3. Cable routing
4. Fire-safety requirements
5. Parking location
6. Earthing availability
7. Whether the electricity connection is individual or common

Do NOT

Run a cable casually from the apartment through:

• staircases
• common passages
• lift shafts
• fire exits
• areas where vehicles can damage the cable

The installation should be properly routed and mechanically protected.

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11. If the parking is far from the meter

Suppose:

Meter → Parking = 35 metres

Do not simply buy a long extension cable.

Instead:

Energy Meter

     │

Main DB

     │

Dedicated EV Circuit

     │

Properly sized cable

     │

Protection

     │

EVSE

     │

Scooter

Cable size should be checked for voltage drop and current-carrying capacity.

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12. What should you check before buying a 2-wheeler EV charger?

This is the most important part.

My 15-point buying checklist

1. Vehicle compatibility

First check:

"Does this charger support my exact scooter model?"

Don't buy based only on:

"It is a 3.3 kW charger."

The connector, voltage, communication and charging architecture must be compatible.

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2. Maximum charging power

Look at: kW

But don't buy unnecessarily high power.

If your scooter accepts only: 1.5 kW a 7.2 kW charger will not necessarily charge it faster.

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3. Output voltage

Check:

• Battery nominal voltage
• Charger output voltage range
• Vehicle charging specification

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4. Output current

For example: 72 V / 10 A is very different from: 72 V / 20 A

The battery/BMS must support the charging current.

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5. Connector

Check the exact charging connector required by your scooter.

Don't assume that all electric scooters use the same connector.

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6. Input supply

Check whether the charger requires: 230 V AC single phase or something different.

For normal residential 2-wheeler charging, 230 V single phase is generally the relevant supply.

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7. Safety protections

Look for protection against:

• Over-voltage
• Under-voltage
• Over-current
• Short circuit
• Over-temperature
• Surge
• Earth leakage/residual current, as applicable
• Overload
• Abnormal input conditions

BIS's EVSE framework explicitly includes areas such as protection against electric shock, overload and short circuit. BIS LIMS

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8. BIS/Indian-standard compliance

For India, I would give significant importance to products demonstrating appropriate compliance with applicable Indian standards.

IS 17017 is the key family of Indian standards for EV conductive charging systems. Bureau of Indian Standards

Don't rely only on a seller saying "BIS certified."

Ask:

"Which IS standard does this product comply with, and can you provide the test/compliance documentation?"

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9. IP rating

For a charger installed in a parking area, look for an appropriate IP rating.

For example: IP54 / IP55 / IP65

may be encountered, depending on product design.

Higher IP rating generally means greater protection against dust/water ingress, but the actual installation environment still matters.

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10. Cable quality

Check:

• Cable length
• Conductor quality
• Flexibility
• Insulation
• Connector quality
• Strain relief
• Heat resistance

A cheap charger with a poor cable can become a serious reliability issue.

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11. Temperature protection

This is particularly important in India's climate.

Look for:

Over-temperature protection + automatic reduction/shutdown

especially if the charger is installed in a hot parking area.

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12. Warranty

Prefer: 2–3 year warranty, where available.

More importantly, check:

Who will actually service it?

A 3-year warranty is not very useful if the manufacturer has no service network in your city.

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13. Spare parts/service

Ask:

• Who repairs it?
• Where is the service centre?
• Availability of replacement cable?
• Replacement connector?
• Control board?
• Warranty turnaround time?

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14. Smart features

For home use, useful features include:

• Timer
• Energy consumption
• Mobile monitoring
• Charging history
• Current adjustment
• Remote start/stop

But don't pay a large premium for features you won't use.

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15. Total installation cost

Don't compare only:

Charger = ₹ X

Calculate:

Charger + cable + MCB/RCBO + RCCB/RCBO + DB + isolator + earthing + installation + mounting + cable tray/conduit + taxes

That's the real cost.

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13. Which charger would I recommend for different users?

User	Recommended solution
Daily 20–30 km	Manufacturer portable charger
Daily 30–60 km	Portable/1–2 kW AC charger
Daily 60–100 km	Higher-power compatible AC charger
Apartment user	Dedicated protected AC point
Independent house	Dedicated EV circuit + wall/portable charger
Commercial/fleet use	Dedicated AC/DC charging infrastructure
Need rapid turnaround	Compatible higher-power/DC solution
Occasional charging	Portable charger

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14. A very important calculation before buying

Suppose: Battery = 4 kWh and charger input power is approximately: 2 kW

The theoretical charging time is:

Time = 4/ 2=2 hours

But actual charging won't normally be exactly 2 hours because of:

• Charging losses
• Battery temperature
• BMS limitations
• Charging taper near full charge
• Charger efficiency

So actual time might be somewhat higher.

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15. Don't charge to 100% every day unnecessarily

For lithium-ion batteries, battery life is influenced by:

• Depth of discharge
• Temperature
• Charging rate
• Time spent at very high state of charge
• Battery chemistry
• BMS strategy

Follow the scooter manufacturer's recommended charging practice rather than assuming:

"Fastest charger = best charger."

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16. My preferred home installation

For a normal independent house, I would prefer:

              ELECTRICITY METER

                     │

                     ▼

               MAIN DB

                     │

              Dedicated EV

               Protection

                     │

          ┌──────────┴──────────┐

          │                     │

        RCBO/RCCB             SPD*

          │

         MCB

          │

       Isolator

          │

    Dedicated Cable

          │

    ┌──────────────┐

    │    EVSE      │

    │  1–3.3 kW    │

    └──────┬───────┘

           │

        SCOOTER

* SPD requirements depend on the installation and applicable electrical design.

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17. My "Buy / Don't Buy" rule

✅ BUY if:

• Exact scooter compatibility confirmed
• Correct connector
• Correct voltage/current
• Suitable power
• Applicable Indian-standard compliance/documentation
• Good electrical protection
• Good earthing
• Suitable IP rating
• Temperature protection
• Good warranty
• Local service support
• Proper installation possible

❌ DON'T BUY if:

• Seller cannot specify output voltage/current
• Connector compatibility is unclear
• No proper protection information
• No documentation
• Very thin/poor-quality cable
• No earthing provision
• Charger becomes excessively hot
• Seller says "all scooters are compatible"
• No meaningful warranty/service
• You are planning to operate it through a cheap extension board

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One simple recommendation

For most Indian homes with one electric scooter, I would not start by buying the highest-kW charger.

I would first establish:

Scooter model → battery voltage → maximum permitted charging current → manufacturer's charger specification → home sanctioned load → distance from DB/meter to parking → protection/earthing → then select the charger.

That sequence prevents most purchasing and installation mistakes.