GMG Announces Long Life Battery Cycling Data
https://www.newsfilecorp.com/release/313606/G...cling-Data
Brisbane, Queensland, Australia--(Newsfile Corp. - September 9, 2026) - Graphene Manufacturing Group Ltd. (TSXV: GMG) (OTCQX: GMGMF) ("GMG" or the "Company"
is pleased to provide the latest progress update on the next generation graphene battery technology being developed by GMG under a Joint Development Agreement with Rio Tinto, one of the world's largest metals and mining groups, and with the support of the Battery Innovation Center of Indiana ("BIC" in the United States of America.
GMG is pleased to share the following cycling data of GMG's fast charging G®CELLS (1 Ah cells with 6 minute charging) as seen in Figure 1, with voltage and capacity graphs shown in Figure 2. This data was collected by the BIC on cells that were made by the BIC with materials that were developed, manufactured and supplied by GMG in its Brisbane Battery Development Centre.
Figure 1 shows that G®CELLS have cycled with no performance reduction after 489 cycles, as at September 4th 2026, despite being charged and discharged within 6 minutes for each cycle. Figure 1 also shows the performance of a well-known Lithium Titanate Oxide (LTO) battery which, when charged under the same cycling profile, degraded to 86% of original capacity (near the 80% state of charge which is typically the declared end of life of a cell) within 64 cycles. The G®CELLS have effectively lasted over seven times longer when cycling with the same testing.
https://www.newsfilecorp.com/release/313606/G...cling-Data
Brisbane, Queensland, Australia--(Newsfile Corp. - September 9, 2026) - Graphene Manufacturing Group Ltd. (TSXV: GMG) (OTCQX: GMGMF) ("GMG" or the "Company"
is pleased to provide the latest progress update on the next generation graphene battery technology being developed by GMG under a Joint Development Agreement with Rio Tinto, one of the world's largest metals and mining groups, and with the support of the Battery Innovation Center of Indiana ("BIC" in the United States of America. GMG is pleased to share the following cycling data of GMG's fast charging G®CELLS (1 Ah cells with 6 minute charging) as seen in Figure 1, with voltage and capacity graphs shown in Figure 2. This data was collected by the BIC on cells that were made by the BIC with materials that were developed, manufactured and supplied by GMG in its Brisbane Battery Development Centre.
Figure 1 shows that G®CELLS have cycled with no performance reduction after 489 cycles, as at September 4th 2026, despite being charged and discharged within 6 minutes for each cycle. Figure 1 also shows the performance of a well-known Lithium Titanate Oxide (LTO) battery which, when charged under the same cycling profile, degraded to 86% of original capacity (near the 80% state of charge which is typically the declared end of life of a cell) within 64 cycles. The G®CELLS have effectively lasted over seven times longer when cycling with the same testing.
