# Graphene Manufacturing Group's fast-charging battery cells show no performance loss

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/graphene-manufacturing-group-s-fast-charging-battery-cells-show-no-performance-l--ee6d6f4a-2d72-4d4d-b1db-f6ce6578153d

Original source: https://www.proactiveinvestors.com/companies/news/1098301/graphene-manufacturing-group-s-fast-charging-battery-cells-show-no-performance-loss-1098301.html

Publisher: proactiveinvestors

Original announcement: 2026-09-09T20:46:05.687Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Graphene Manufacturing Group Ltd

- Ticker: GMG

- Exchange: Unavailable

- Region: Unavailable

- Primary commodity: Lithium

- Secondary commodities: None reported

- Document categories: Metallurgy

- Extracted: 2026-09-09 20:48:10 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Graphene Manufacturing Group \(GMG\) reported that its fast-charging GCELLS showed no performance loss after 489 charge cycles, significantly outperforming a Lithium Titanate Oxide \(LTO\) comparison. The testing, conducted in collaboration with Rio Tinto and the Battery Innovation Center of Indiana, demonstrated superior cycling stability with low internal resistance.

Reasoning: The announcement reports highly successful battery cycling test results showing significantly better durability than the LTO benchmark, though energy density is noted as an ongoing optimization target.

- Positive factor: exceptional cycling stability

- Positive factor: no measurable degradation after 489 cycles

- Positive factor: superior performance vs LTO benchmark

- Positive factor: low internal resistance

- Negative factor: energy density still requires optimization

Facts used in scoring: 2

## Classification and evidence

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: While not a traditional metallurgical recovery, the cycling stability \(performance retention\) is exceptional for the technology class.

Evidence · text

> cycling stability 'genuinely exceptional'

**Multi-Domain Tested**

Polarity: positive

Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed.

Why it applies: 2 distinct composites were tested

## Extracted facts

Stored fact records: 2. Some facts used in scoring do not have a stored record.

## Metallurgical Results (2)

### cycling

[Link to this fact](https://atlas-staging.minestarters.com/news/graphene-manufacturing-group-s-fast-charging-battery-cells-show-no-performance-l--ee6d6f4a-2d72-4d4d-b1db-f6ce6578153d#fact-metallurgical-facts-0)

lithium

#### Identity

- Commodity: lithium
- Ticker: GMG

#### Test Work

- Program Status: detailed
- Test Type: cycling
- Sample: 1 Ah GCELLS built with materials from GMG's Brisbane Battery Development Centre

#### Lab

- Laboratory: Battery Innovation Center of Indiana

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-09T00:00:00.000Z

Reasoning: Exceptional cycling stability reported over 489 cycles.

- Positive factor: 489 cycles with no performance loss

- Positive factor: outperformed LTO benchmark

Evidence · text

> GCELLS have shown no reduction in performance after 489 charge cycles, each completed within six minutes

### cycling

[Link to this fact](https://atlas-staging.minestarters.com/news/graphene-manufacturing-group-s-fast-charging-battery-cells-show-no-performance-l--ee6d6f4a-2d72-4d4d-b1db-f6ce6578153d#fact-metallurgical-facts-1)

lithium

#### Identity

- Commodity: lithium
- Ticker: GMG

#### Test Work

- Program Status: detailed
- Test Type: cycling
- Sample: Lithium Titanate Oxide \(LTO\) battery comparison cell

#### Lab

- Laboratory: Battery Innovation Center of Indiana

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-09T00:00:00.000Z

Reasoning: The benchmark LTO cell reached end-of-life threshold much faster than the GCELLS.

- Negative factor: degraded to 80% capacity within 64 cycles

Evidence · text

> The LTO cell degraded to 86% of its original capacity... within just 64 cycles.

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.