EV Charging · Engineering

How to install DC fast charging without a transformer or grid upgrade

Automation Gallery · September 2026 · 5 min read

The most common reason an EV fast-charging project stalls in India is not cost or demand — it is the electricity connection. A 60 or 120 kW DC charger needs a large sanctioned load, and getting a transformer upgraded means cost, utility paperwork and often weeks of waiting. There is an engineering way around it.

The problem: your supply has a limit

A conventional DC fast charger pulls its full power directly from the grid the instant a car plugs in. If your connection can't deliver that surge, you either upgrade the supply — slow and expensive — or you give up on fast charging. For a lot of good sites (small commercial plots, hotels, rural highway stops), that is where the plan dies.

The solution: put a battery between the grid and the car

Our signature Flash Charge Vector Series is a DC fast charger with an integrated battery. Instead of demanding a huge surge from the grid, it:

The result is full fast-charge speed from a connection up to eight times smaller than a conventional charger would need — with no wiring upgrade, no utility paperwork and no waiting.

It also rides through power cuts

Because the charger works from its own battery buffer, it keeps charging straight through a grid outage. On an unreliable supply, that turns an unusable site into a dependable one — and it is engineering our team builds in-house, not a bolt-on.

Solar-ready by design

The Vector Series pairs directly with rooftop solar, so the battery can be topped up from generation rather than the grid — lowering running cost and grid dependence further. This fits naturally with our wider solar and battery storage work.

Where this changes the equation

The Vector approach makes fast charging viable at sites that would otherwise be ruled out: locations with a weak connection, areas with frequent outages, and anywhere the cost or delay of a grid upgrade would kill the project. Models range across FCV-30/60/90/120 to match the site.

Talk to our engineers

If a site you have looked at was blocked by its electricity supply, it may still be workable. Send us the location and the available connection, and our engineers will tell you honestly whether the Vector Series fits and what it would deliver.

Frequently asked questions

Can I install a DC fast charger on a small electricity connection?

Yes, with a battery-backed charger. Our Vector Series draws steadily from a small or weak supply as low as 11-30 kW, stores the energy in an integrated battery, and delivers up to 90 kW to the vehicle, so you get fast-charge speed without a large sanctioned load.

Will the charger keep working during a power cut?

The Vector Series keeps charging straight through a grid outage, drawing from its integrated battery. This is a major advantage in areas with unreliable supply.

Does this remove the need for utility paperwork and a transformer?

In many cases, yes. Because the charger runs on a much smaller connection, sites can often avoid a transformer upgrade and the associated sanction paperwork and waiting period entirely.

Is the Vector Series solar compatible?

Yes, it is solar-ready and can pair directly with rooftop generation, which further reduces the load drawn from the grid.

Planning a project with Automation Gallery?

Tell us the site and requirement — our engineers will scope it and get back within 24 hours.

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