Mr. Michael Murphy reports

GLOBAL BATTERY METALS PROVIDES LEINSTER LITHIUM DRILL PROGRAM UPDATE

Global Battery Metals Ltd. has provided an update on its inaugural drilling campaign at the Leinster lithium project in Ireland.

Highlights:

Multiple, pegmatite intercepts have been intersected in initial drill holes (see Figure 1)

Surface geochemistry targets are being tested as part of current drilling campaign and already providing strong corroborative proof of concept to GBML's geological interpretation

Successive holes will be targeting different parts of the anomalous deep overburden geochemistry grid

Company has started to transport pegmatite core samples to ALS Laboratories for analysis

"So far, our initial drill holes have delivered very promising pegmatite intercepts that have the on-site teams excited," said Michael Murphy, CEO of Global Battery Metals. "While there's still more work to accomplish, we are making good progress hitting close-to-surface pegmatite intercepts and processing core for analysis. We will continue to follow what we are finding and optimize our drill plans accordingly."

Exploration and Drilling Update

Phase 1 of the Leinster Drill Program (see May 10, 2023, press release) is focusing efforts on the Knockeen Prospect and prospective lithium pegmatite trend targets including up to six potential dikes that the Company believes are located proximal to the historically reported trenched bedrock occurrence. The Drill Program has been approved under the government's appropriate assessment screening process for up to 10 drill holes. No drilling has ever been carried out at this prospect previously and hitting bedrock pegmatites in the first hole drilled is considered a major technical success for the company. The project is being managed on the ground for the Company by exploration contracting company Aurum Exploration Limited.

As previously noted, significant sampling and mapping across the Knockeen Prospect has been conducted, with the potential discovery of up to six LCT pegmatite dikes (see March 20, 2023, press release) and the most recent assay results of 66 rock samples released by ALS Laboratories returning Li2O% lithium contents ranging up to 3.75 % Li2O / 17,410 ppm Li (see Figure 2 and January 18, 2023, press release). Figure 1: Close up of drill core from Hole 23-1597-01.To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/7080/169028_6559a0bc7420e8e1_001full.jpgFigure 2: Spodumene pegmatite grading 3.75% Li2OTo view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/7080/169028_6559a0bc7420e8e1_002full.jpg

Responsibility to the Environment

All mineral exploration activities in Ireland take place under the auspices of the GSRO, a division within the Government Department of the Environment, Communications & Climate Change. Exploration is governed under the framework of both Irish and EU legislation that has been implemented to ensure that the environment is protected during exploratory work. Prospecting licence holders must comply with all of the relevant legislation. The Company is pleased to confirm that it adheres to the highest standards of good practice in relation to its ongoing exploration activities having completed a detailed GSRO "Appropriate Assessment" process prior to commencement and which was reviewed, approved and signed off by the appropriate oversight authorities.

For additional program details, please see the Company's Leinster Project Overview in addition to the latest version of the Company's Investor Presentation available for download from the GBML website (www.gbml.ca).

Competent Person

All scientific and technical information in this announcement has been prepared under the supervision of and reviewed and approved by EuroGeol Vaughan Williams, M.Sc., P.Geo., (Principal of Aurum Exploration Services currently providing exploration services to GBML and to LRH Resources Limited ("LRH")), a "qualified person" within the meaning of National Instrument 43-101. Vaughan Williams is also company secretary of LRH.

The Knockeen Prospect forms part of the Project exploration block, which is operated under an exclusive option and earn-in agreement with Technology Minerals Plc, the first listed UK company focused on creating a sustainable circular economy for battery metals, and its wholly owned subsidiary LRH.

About the Leinster Lithium Project

The Project, located in the counties of Wicklow and South Carlow, in the Republic of Ireland, is a lithium pegmatite project that consists of 16 prospecting license areas located SW of Dublin and is adjacent to the Ganfeng Lithium/International Lithium Corporation Blackstairs Lithium Project. Lithium mineralization has been confirmed across all Project areas explored to date, with the potential discovery of up to six LCT pegmatite dikes and assay results of 66 rock samples released by ALS Laboratories returning Li2O% lithium contents ranging up to 3.75 % Li2O / 17,410 ppm Li at the Knockeen Prospect. The Project's maiden Drill Program, now underway, is permitted for up to 10 drill holes.

About Global Battery Metals Ltd.

GBML is an international mineral exploration and development company with a focus on lithium and other metals that comprise and support the rapid evolution to battery power. GBML currently maintains economic interests in four battery metal projects: (1) an option to acquire up to a 90% in the drill-ready Leinster Lithium Property in Ireland; (2) a 100% interest in the drill-ready Lithium King Property in Utah; (3) an option to acquire up to a 100% interest in the La Poile Lithium Project in Newfoundland; and (4) a 55% stake in Peru-based Lara Copper Property, which has over 10,000 metres of drilling. As previously disclosed, Minsur S.A., a Peruvian mining company, entered into an option agreement with GBML and Lara Exploration Ltd. to acquire the Lara copper property for staged payments of USD$5.75 million. GBML will retain a 0.75% net smelter royalty. GBML's common shares are listed on the TSX Venture Exchange (TSXV: GBML); Frankfurt Stock Exchange (FSE: REZ); and are quoted on the OTC Markets (OTCQB: REZZF).

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