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Modular Li-Ion Packs for a Residential ESS Platform
Energy Storage

Modular Li-Ion Packs for a Residential ESS Platform

Published February 15, 2026Residential ESS startup

A storage startup needed a modular 5 kWh building block with predictable BMS telemetry and certification path.

At a Glance

Project snapshot

  • Category: Energy Storage
  • Challenge: A storage startup needed a modular 5 kWh building block with predictable BMS telemetry and certification path.
  • Solution: Custom EPT cell and pack design with full validation
  • Outcome: Validated in field trials and approved for mass production

Key outcomes

Status
In production
Lead time
12 weeks

The Challenge

A storage startup needed a modular 5 kWh building block with predictable BMS telemetry and certification path.

Our Approach

EPT matched chemistry, PCM, and mechanical design to the device duty cycle, then ran safety and lifecycle testing through our CNAS-accredited lab.

Results

The client signed off after DVT and transferred volume production to EPT manufacturing lines.

energy storageESShome battery

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