ISO 9001:2015 · Manufacturing since 1987

Industrial battery charging,engineered for the grid ahead

Precision power. Industrial battery charging since 1987. Float, traction, SMPS & Li-Ion solutions for substations, steel plants, and mobility — from Kolkata, across India.

35+
Years in power
ISO
9001:2015
Pan-India
Install & support
MSME
Trusted partner

About ESI

Powering critical infrastructure

Electro Service India began with LT transformers and chokes in 1987. Today we supply battery chargers, SMPS, control panels, and AC/DC distribution to steel plants, electricity boards, PSUs, and quality-driven SMEs nationwide.

ESI started its operation with manufacturing of LT Transformers and Chokes for industrial applications in 1987. Within a very short period ESI has earned the unflinching patronage of discerning users which include Giant Steel Plants, Electricity Boards, Large Public Sectors, Multinationals, National Laboratories and a number of quality conscious Medium & Small Industries.

  • Quality & compliance

    ISO 9001:2015 processes from design to field support.

  • Engineering depth

    Thyristor & SMPS platforms tuned for utilities and industry.

  • Lifecycle support

    Maintenance, buy-back, and replacement programmes.

Company profile
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Product range

Chargers & power systems

From float-cum-boost to SMPS and Li-Ion — built for harsh industrial environments.

View all products
Float Cum Boost Battery Charger

Float Cum Boost Battery Charger

01

Battery Charger, when used in stand by application is not a standalone dedicated Battery Charger. In standby application a Battery charger along with a floating Battery provide uninterrupted DC power supply to a critical DC load. This is Float-cum-boost battery charger or FCBC feeds the critical load without any break and also charges the discharged battery.

Details
Traction Battery Charger

Traction Battery Charger

02

Battery chargers dedicated for charging Traction batteries are commonly known as “Traction Battery Chargers”. Traction batteries are used for material handling vehicles inside a plant, passenger carrying carts in airport or railway stations, Golf cart and similar applications.

Details
SMPS Battery Charger

SMPS Battery Charger

03

SMPS, or the switched-mode power supply, is an electronic circuit that converts the power with switching devices turned on and off at high frequencies. The SMPS also uses storage components like inductors or capacitors to provide power when switching the devices in the non-conduction state.

Details
E-Rickshaw Battery Charger

E-Rickshaw Battery Charger

04

E-Rickshaw runs on electrical energy provided by a heavy-duty rechargeable battery bank. E-Rickshaw is Eco-friendly, noi…

Details
DCDB & ACDB

DCDB & ACDB

05

## AC DISTRIBUTION BOARD Low tension AC Distribution Panels/Boards have many applications such as: 1. Power Distributi…

Details

Our clientele

Proven in the field

ALSTOM
AREVA
KMDA
WBPDCL
GRSE
IIM KOLKATA
MECON
BHEL
L&T
MEGATHEM
RELIANCE
SIMPLEX
SIEMENS
SCHNEIDER
KEIP
IIT KGP
HINDALCO
WIPRO
BHPHCL
TATA Steel

Trusted by industry

What customers say

We take great pride in delivering quality products and services to our clients. Here are some testimonials from our valued customers:

trusted reviews
  • ESI

    M/s Electro Service India’s performance of the Battery Chargers are very satisfactory and their service and maintenance support is excellent.

    RP SanjivGoenka Group
  • ESI

    We are well acquainted The Electro Service India with the Job of Battery Charger supplier from pretty long years and they are so much helpful about our breakdown of various site jobs with full satisfaction. In this regard we think his performance is good about product and sale service and they might be enlisted with various project Consultant & Contractors.

    Oriental Engginering Co
  • ESI

    M/s Electro Service India have supplied large number of Thyristor Control Battery Charger in the last 25 years for the projects of PHED- West Bengal. Performance of the product have been very satisfactory. And their after sale service response is is prompt and service quality is excellent. We wish them all success.

    West Bengal Engineering Co.
  • ESI

    Battery Charger, LTAC, DCDB manufactured by M/S Electro Service India, Kolkata have been installed in various substation sites in Assam and are in service since last five years rendering satisfactory performance.

    AEGCL
  • ESI

    Performance of their products has been very satisfactory. And there after sale service response is prompt and service quality is excellent.

    Eastland Switchgears Pvt. Ltd
  • ESI

    Performance of the product has been satisfactory till now. And their after Sales & Service response is prompt and service quality is excellent.

    Iocl Haldia
  • ESI

    M/s Electro Service India’s performance of the Battery Chargers are very satisfactory and their service and maintenance support is excellent.

    RP SanjivGoenka Group
  • ESI

    We are well acquainted The Electro Service India with the Job of Battery Charger supplier from pretty long years and they are so much helpful about our breakdown of various site jobs with full satisfaction. In this regard we think his performance is good about product and sale service and they might be enlisted with various project Consultant & Contractors.

    Oriental Engginering Co
  • ESI

    M/s Electro Service India have supplied large number of Thyristor Control Battery Charger in the last 25 years for the projects of PHED- West Bengal. Performance of the product have been very satisfactory. And their after sale service response is is prompt and service quality is excellent. We wish them all success.

    West Bengal Engineering Co.
  • ESI

    Battery Charger, LTAC, DCDB manufactured by M/S Electro Service India, Kolkata have been installed in various substation sites in Assam and are in service since last five years rendering satisfactory performance.

    AEGCL
  • ESI

    Performance of their products has been very satisfactory. And there after sale service response is prompt and service quality is excellent.

    Eastland Switchgears Pvt. Ltd
  • ESI

    Performance of the product has been satisfactory till now. And their after Sales & Service response is prompt and service quality is excellent.

    Iocl Haldia

Ready to spec your next charger?

Share your application — substation, traction, e-mobility, or custom panel build. We’ll respond with technical options and timelines.