GMG Announces 48% Increase in Energy Density, Doubling of Cycle Life and 94% Energy Efficiency for 6 Minute Fast Charge
https://www.newsfilecorp.com/release/318037
Brisbane, Queensland, Australia--(Newsfile Corp. - October 8, 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 (1.5 Ah cells with 6 minute charging) as seen in Figure 1, with energy density and energy efficiency 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 1000 cycles, as at October 7th 2026, which is a doubling of cycle life since the previous GMG battery performance announcement1, despite being charged and discharged in 6 minutes (at 7C). Figure 1 also shows the performance of a well-known Lithium Titanate Oxide (LTO) battery which, when charged and discharged at the same time of 6 minutes (at 10C) degraded to 80% of original capacity (which is typically the declared end of life of a cell) within 82 cycles. Another G®CELL was also charged and discharged in 6 minutes (at 10C) and registered only a 10% reduction after 393 cycles. The G®CELLS effectively last 10 times longer whilst being charged and discharged in the same time.
https://www.newsfilecorp.com/release/318037
Brisbane, Queensland, Australia--(Newsfile Corp. - October 8, 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 (1.5 Ah cells with 6 minute charging) as seen in Figure 1, with energy density and energy efficiency 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 1000 cycles, as at October 7th 2026, which is a doubling of cycle life since the previous GMG battery performance announcement1, despite being charged and discharged in 6 minutes (at 7C). Figure 1 also shows the performance of a well-known Lithium Titanate Oxide (LTO) battery which, when charged and discharged at the same time of 6 minutes (at 10C) degraded to 80% of original capacity (which is typically the declared end of life of a cell) within 82 cycles. Another G®CELL was also charged and discharged in 6 minutes (at 10C) and registered only a 10% reduction after 393 cycles. The G®CELLS effectively last 10 times longer whilst being charged and discharged in the same time.
