eV Home Charging Setup: Charger, Meter and Real Costs

My setup at a glance

Ninety-plus percent of my e Vitara's charging happens at home, overnight, while I sleep. Here's the complete setup, what it costs me to run, and what I'd tell anyone planning their own.

Part	What I use
Car	Maruti Suzuki e Vitara, 61 kWh battery
Charger	UNO Minda 7.4 kW AC wall charger, Type 2
Supply	Single-phase 230 V, 32 A
Protection	40 A double-pole MCB, proper earthing
Meter	Separate MSEDCL LT-VI "green" EV meter, ₹9.25 per unit
Parking	My housing society's parking spot

The charger is a 7.4 kW AC wall box from UNO Minda. Here are the specs that matter, from its user manual:

Spec	Value
Output	7.4 kW AC, single phase
Input	230 V, 32 A
Connector	Type 2 (fits the e Vitara directly)
Weather rating	IP65, dust-tight and protected against water jets
Mounting	Wall or pole
Connectivity	4G, Wi-Fi, Ethernet, Bluetooth
Smart charging protocol	OCPP 1.6J
Start modes	RFID card, mobile app, or free-vending (plug and charge)
Warranty	2 years

Why 7.4 kW? It's the most a normal single-phase home connection can comfortably deliver. On my car it adds roughly 7 kWh to the battery per hour, which is plenty for an overnight top-up.

Why IP65 matters: my charger is in an open parking area, so it gets dust and monsoon rain. IP65 means that isn't a worry.

Installation: what goes into the wall

A 7.4 kW charger draws 32 A continuously for hours, so the wiring has to be done properly. As a mechanical engineer I insisted on these, and you should too:

1. A dedicated circuit. The charger gets its own line from the meter, never shared with home sockets.
2. A 40 A double-pole MCB. It protects both live and neutral, sized above the 32 A charging current.
3. Correct wiring: live (L), neutral (N) and protective earth (PE), with cable thick enough for 32 A over the full run length.
4. Good earthing. This is non-negotiable for safety. Get the earth checked, not just assumed.
5. Solid mounting at a sensible height, close enough that the cable reaches the car's charge port without stretching.
6. A licensed electrician for the work, and a test charge before they leave.

The Suzuki third party does the installation. You can download e for me app from Suzuki, it will have all the updates regarding your charger installation process until it gets activated. 

Maruti Suzuki's current offer on the e Vitara includes the charger and installation. Check what your dealer covers before paying for anything extra.

The meter: why I got a separate green EV meter

This was the single best money decision in my whole setup. MSEDCL offers a separate LT-VI EV connection, called the green meter, just for charging.

	Residential meter	Green EV meter
Rate	Slab-based: ₹3.96, ₹10.80, ₹15.03, up to ₹17.53 per unit	Flat ₹9.25 per unit
Effect of EV charging	Pushes the whole household into higher slabs	No effect on the home bill
Tracking	Mixed with home use	Shows exactly what the car uses

My home already uses around 336 units a month on average. Adding EV charging to that meter would push a big share of units into the ₹15–17.53 slabs. On the green meter, every unit the car uses costs a flat ₹9.25, and I can see exactly what the car costs me each month.

I've covered the green meter application process in a separate video. 

Using it day to day

Starting a charge: the charger supports three ways to start, which is handy:

• Free-vending: plug in and charging starts automatically. This is what I use at home.
• RFID card: tap a card to start. Useful in shared society parking, so nobody else can use your charger.
• Mobile app: start, stop and schedule from your phone, and see how much energy went in.

Reading the lights: the LED on the charger shows its status, such as ready, charging, complete or fault. If it shows a fault, the manual's troubleshooting section lists the usual causes, like an earthing issue or a cable that isn't fully seated.

How long it takes: at about 7 kWh per hour, a typical overnight top-up from 30% to 100% (about 43 kWh) takes roughly 6 hours. I plug in when I get home, and the car is full by morning.

My routine: I follow the charging rules from my earlier post: AC charging at home as the default, and a full 100% once a week, timed right before my long Monday drive.

What it actually costs

These numbers come from my own Pune–Mumbai round trip (287.7 km) in October 2026:

Measure	My number
Real range on a full charge	About 480 km (88% of the 543 km ARAI claim)
Battery used for the round trip	60% (about 36.6 kWh)
Cost for the round trip at ₹9.25/unit	About ₹339
Cost per km	About ₹1.2
Cost of a full 0–100% charge	About ₹564 (61 kWh × ₹9.25)

These are based on energy that went into the battery. Wall-meter units will be slightly higher because some energy is lost while charging.

For comparison, a petrol SUV doing 15 km per litre at around ₹105 per litre costs about ₹7 per km. That's roughly six times more. It may vary depending on petrol cost in your city. 

My tips if you're setting up home charging

1. Apply for the green meter early. It takes time, and it saves money on every charge.
2. Never charge a car from a normal household plug for daily use. A dedicated circuit and a proper wall box are safer.
3. Insist on proper earthing and a correctly sized MCB, and get it tested.
4. Talk to your housing society first about where the charger and meter can go.
5. Check what your dealer includes. Many EV offers now include the charger and installation.
6. Use the app to track your real kWh and cost. That's how I get my numbers.

Watch the video

I've shown the full setup, the charger close-up and the wiring in my video.

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Got a question about home charging? Ask in the comments.

Cleaner Roads — Brighter Tomorrows.

Electrical work must be done by a licensed electrician. This post shares my own setup and isn't professional electrical advice. Follow your charger's manual, your car's manual and MSEDCL's rules.