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Areas of expertise

Battery-fire expertise, from e-bikes to grid-scale storage.

A grid-scale storage fire and an e-bike fire share chemistry but little else — different failure modes, different evidence, different responsible parties. Energy Forensics Group matches the investigation to the technology and to the legal question you need answered, whether you're pursuing recovery or defending a product.

Micromobility

E-bikes & e-scooters

Now one of the fastest-growing causes of fatal residential fires. These packs are often charged unattended indoors and overnight — so origin, ignition sequence, and the charging setup are almost always central questions.

Aftermarket and replacement batteries, mismatched or uncertified chargers, damaged cells, and low-quality imported packs all drive these events. We work to separate a genuine product defect from misuse, incompatible components, or prior physical abuse.

Common questions we answer

  • Was it the battery, the charger, or the pairing of the two?
  • Was the pack the original equipment or an aftermarket replacement?
  • Is a manufacturer, importer, or retailer in the chain of causation?
  • Did prior damage or a previous charge event set up the failure?
What we examine
  • Origin cell identification & teardown
  • Charger output & compatibility analysis
  • Certification & listing review (UL/EN)
  • Scene & burn-pattern documentation
  • Aftermarket vs. OEM component tracing

Cordless & consumer packs

Power tools & cordless equipment

Cordless tool packs live hard lives — dropped, over-discharged, exposed to heat and debris, and charged on job sites. That makes the abuse-versus-defect question especially sharp, and especially important to both sides of a claim.

We evaluate whether a cell or pack failed because of a design or manufacturing defect, a charger fault, or external abuse and damage — and document the evidence so the finding survives scrutiny in subrogation or product-defense.

Common questions we answer

  • Defect in the cell or pack, or externally induced failure?
  • Did the charger or BMS contribute to the event?
  • Is the failure consistent with the reported use?
  • Does the evidence support — or undercut — a recall theory?
What we examine
  • Cell-level failure-mode analysis
  • Pack construction & BMS review
  • Exemplar acquisition & comparison testing
  • Charger & charging-behavior evaluation
  • Abuse-signature documentation

Grid & behind-the-meter

Energy storage systems (ESS)

Residential and grid-scale storage losses are large, technically complex, and still served by very few qualified experts. This is where a background in designing and building battery systems matters most.

When a storage system burns, the decisive questions are usually about propagation and controls: why a single cell or module failure was not contained, what the BMS and safety systems did or failed to do, and whether installation and code compliance played a role. We combine physical evidence with available system data to reconstruct the failure path.

Common questions we answer

  • Why did the event propagate instead of isolating one module?
  • How did the BMS, controls, and suppression systems perform?
  • Were siting, installation, or code requirements a factor?
  • Which parties in the chain bear responsibility for the loss?
What we examine
  • Thermal-runaway propagation analysis
  • BMS & controls data review
  • Module & rack failure sequencing
  • Code & standards compliance (NFPA 855, UL 9540)
  • Large-loss subrogation support

Electric mobility

EV & electric mobility

Electric vehicles, conversions, and larger mobility platforms bring high-energy packs, sophisticated battery-management electronics, and difficult questions about charging, collision damage, and thermal runaway in a traction battery.

We assess whether a fire originated in the traction pack, the charging system, or elsewhere in the vehicle, and how prior impact or water intrusion may have set the stage — documenting the basis for the opinion at each step.

Common questions we answer

  • Did the fire originate in the traction battery or elsewhere?
  • What role did charging or the onboard charger play?
  • Did prior collision or immersion damage contribute?
  • Is the failure consistent with a defect or with external cause?
What we examine
  • Traction-pack origin analysis
  • Charging-system & onboard-charger review
  • Collision / immersion history assessment
  • High-voltage system documentation
  • Coordination with vehicle fire investigators

Everyday devices

Consumer electronics & everyday devices

Laptops, phones, tablets, vapes, toys, hoverboards, and countless other rechargeable products fail in the home and workplace — often with a small cell at the origin and a large loss downstream.

These matters turn on precise origin work: locating the specific device and cell responsible, then determining whether a defect, a counterfeit or substandard cell, or a charging fault drove the event.

Common questions we answer

  • Which device — and which cell — actually started the fire?
  • Was the cell genuine, counterfeit, or substandard?
  • Did a charging accessory contribute to the failure?
  • Does the evidence support a product-liability theory?
What we examine
  • Device & origin-cell identification
  • Counterfeit / substandard cell assessment
  • Charging accessory evaluation
  • Micro-scale teardown & imaging
  • Product & component sourcing review

How we work

One disciplined method, applied to every matter.

Every engagement follows the systematic approach of NFPA 921 — hypotheses tested against physical evidence, documented so the reasoning is transparent and reproducible.

1 · Preserve & document

Secure the scene and evidence, establish chain of custody, and capture the conditions before anything is disturbed.

2 · Examine & test

Scene analysis, teardown, imaging, and — where warranted — exemplar and comparison testing of cells and components.

3 · Analyze causation

Develop and test failure hypotheses against the evidence to isolate origin, mechanism, and contributing factors.

4 · Report & support

A clear, thoroughly documented written report — with support through discovery, deposition, and trial as the matter requires.

Not sure which category fits your matter?

Describe the loss and we'll tell you how we'd approach it — and what to preserve right now.

Start an inquiry