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.
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.
Product range
Chargers & power systems
From float-cum-boost to SMPS and Li-Ion — built for harsh industrial environments.
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.
