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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryMelsTefag Elektronik AG
Tefag Elektronik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

TEFAG is a Swiss specialist for customer-specific battery solutions and electronic assemblies. The company's core activity encompasses the development, manufacturing and delivery of battery and charging systems, in particular lithium-ion, lithium-iron phosphate and lithium-polymer batteries, as well as electronic development and assembly manufacturing for various industries such as medical, laboratory, building, sanitary, gas supply, mobile devices, veterinary, animal care, professional photography and acoustics & hearing aids.

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Products & services

Industry:Electrical Industry
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3.9/5

Tefag Elektronik AG

✓ Offered6
Battery and charging systems
Customer-specific battery packs and intelligent battery applications, including lithium-ion, lithium iron phosphate and lithium-polymer batteries.
Electronics development and subassembly manufacturing
Design, development and production of electronic assemblies for industrial applications, including in-house production and assembly.
Battery certifications
Certifications and testing of batteries for customer-specific battery applications and energy systems.
Product development
Development of custom battery solutions, electronics and energy management systems from concept through series readiness.
Production
Manufacturing of prototypes and series, assembly of subassemblies and custom battery kitting at the Mels site.
Manufacturing management
Control and management of manufacturing processes for customer-specific battery packs and electronic assemblies.
Trust & reputation

ranQ Trust Score of Tefag Elektronik AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Tefag Elektronik AG scores 52.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.50.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.45.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Tefag Elektronik AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Tefag Elektronik AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Tefag Elektronik AG scores 34.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tefag Elektronik AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.4 out of 5 stars from 5 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
3.4
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle3.45
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Grossfeldstrasse 5
8887 Mels

At a glance

Legal form
Corporation
UID
CHE-107.422.868
Founded
1992 · 34 years
Last commercial register change
November 27, 2025
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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