Manganese X Energy Advances to Final Phase of C4V Battery Qualification Program Following Initial Performance Validation

MANGANESE X ENERGY ADVANCES TO FINAL PHASE OF C4V BATTERY

QUALIFICATION PROGRAM FOLLOWING INITIAL PERFORMANCE VALIDATION

Montreal, Quebec – June 16, 2026 – Manganese X Energy Corp. (TSXV: MN) (FSE: 9SC)

(TRADEGATE: 9SC) (OTCQB: MNXXF) (“ Manganese X ” or the “ Company”) is pleased to

provide an update on its battery materials qualification program with Charge CCCV LLC (“C4V”).

The Company’s high-purity manganese material has advanced to Phase 3, the final stage of C4V’s

battery qualification program: Multi -Layer Full Pouch Cell Evaluation. This commercial -level

testing is part of C4V’s Digital DNA Supply Chain Qualification Program.

C4V has informed the Company that its initial engineering analysis indicates Manganese X’s high-

purity manganese material meets the initial rigid specifications and performance requirements for

advancement to this final testing phase. The Phase 3 Multi -Layer Full Pouch Cell Evaluation is

expected to take approximately six months, with interim performance updates anticipated during

the program.

Manganese X’s battery-grade manganese material is sourced from its Battery Hill project, one of

the largest manganese deposits in North America. The Battery Hill project is at prefeasibility stage

and is located near Woodstock, New Brunswick, Canada.

CEO Martin Kepman stated, “Receiving confirmation that our high-purity manganese material has

met Phase 3 ’s initial stringent specifications and performance requirements , reinforces our

confidence in Battery Hill’s ability to supply a critical material for the North American electric vehicle

battery and energy storage markets. This important advancement brings us closer to establishing

a strategic partnership with C4V and may support future commercial discussions, including

possible offtake agreements. Our material’s durability and stability could potentially set a new

benchmark for battery performance . We are excited to advance into Phase 3 testing to further

demonstrate its commercial application.”

Phase 2 testing with U.S. battery technology innovator C4V delivered strong results, with 70%

capacity retention after 4,600 cycles. Based on the Company’s understanding of industry

benchmarks, this indicates better cycle life than conventional NMC-based EV battery chemistries

and compares favourably with Lithium Iron Phosphate (LFP) and Lithium Manganese Iron

Phosphate (LMFP) chemistri es. These findings highlight the potential of Manganese X’s high -

purity, battery-grade manganese as a strategic material for the global Electric Vehicle and Battery

Energy Storage System (BESS) markets.

Phase 3 Testing:

Phase 3 of C4V’s qualification program, is evaluating the Battery Hill material in multilayer pouch

cells (3Ah design) to meet end-user product requirements. Successful results from this final phase

will further validate the material’s performance in advanced battery designs, paving the way for

commercial adoption.

About Manganese X Energy Corp.

Manganese X's mission is to advance its Battery Hill project into production, thereby becoming

the first public actively traded manganese mining company in Canada and US to commercialize

EV compliant high purity manganese, potentially supplying the North American supply chain. The

Company intends to supply value-added materials to the lithium-ion battery and other alternative

energy industries, as well as striving to achieve new carbon-friendly more efficient methodologies,

while processing manganese at a lower competitive cost.

For more information visit the website at www.manganesexenergycorp.com.

About Charge CCCV (C4V)

C4V™ is a lithium -ion battery technology company possessing critical insights related to the

optimum performance of lithium -ion batteries and Gigafactory’s. C4V’s discoveries have been

fruitful in vastly extending battery life, safety and charge performance, however more important is

the Gigafactory offering that allows emerging countries to establish their own robust manufacturing

ecosystem. C4V works with industry-leading raw material suppliers and equipment supply chain

to bring to market fully optimized batteries possessing key economic advantages providing the

ultimate “best in class” performance for various applications and end- to-end solutions to produce

them on a Gigawatt hour scale. With its highly scalable business model C4V aims to achieve

100+GWh of cell production capacity globally by 2032 and its Digital DNA Supply Chain solution

ensures materials meet the highest industry standards for performance and reliability.

For more information on C4V please visit https://www.chargecccv.com/

On behalf of the Board of Directors of

MANGANESE X ENERGY CORP.

Martin Kepman

CEO and Director

Email: [email protected]

Tel: 1-514-802-1814

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined

in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy

of this release.

Cautionary Statement Regarding Forward -Looking Information : This news release contains

"forward-looking information" and "forward -looking statements" (collectively, "forward -looking

statements") within the meaning of applicable Canadian securities legislation. Forward -looking

statements relate to future events or f uture performance and are based upon the Company's

current expectations, estimates, assumptions and beliefs. Such statements include, but are not

limited to, statements regarding: the expected timing, scope and completion of Phase 3 Multi -

Layer Full Pouch Cell Evaluation testing by C4V; the anticipated receipt of interim and final testing

results; the ability of the Company's high -purity manganese material to continue to meet

performance specifications; the potential validation, qualification, commercial adoption or

commercialization of the Company's battery-grade manganese material; the possibility of future

commercial discussions, strategic relationships, supply arrangements or offtake agreements; the

development and advancement of the Battery Hill project; and the Company's objective of

becoming a supplier of battery-grade manganese products to the North American electric vehicle

and energy storage markets.

Forward-looking statements are frequently identified by words such as "expects", "anticipates",

"believes", "plans", "intends", "estimates", "projects", "potential", "may", "could", "would", "will",

and similar expressions, although not all forward-looking statements contain such words.

Forward-looking statements are based on a number of assumptions that management believes

are reasonable as of the date of this news release, including assumptions regarding the

continuation and completion of testing programs, the accuracy and reliability o f test results, the

ability of the Company's materials to satisfy technical and commercial requirements, the

availability of financing and resources, market demand for battery materials, and general

economic and industry conditions. However, there can be n o assurance that such assumptions

will prove to be correct.

Forward-looking statements are subject to known and unknown risks, uncertainties and other

factors that may cause actual results, performance or achievements to differ materially from those

expressed or implied by such statements. These risks and uncertain ties include, among others:

the possibility that Phase 3 testing may not be completed as anticipated or may not yield

favourable results; the possibility that the Company's materials may fail to satisfy future

performance, qualification or commercial requirements; the absence of any obligation on the part

of C4V or any third party to enter into a commercial relationship, supply arrangement or offtake

agreement with the Company; risks relating to the exploration, development and permitting of the

Battery Hil l project; changes in market conditions, battery technologies and customer

requirements; financing and capital market risks; regulatory and environmental risks; and the other

risks disclosed in the Company's public disclosure record available under its profile on SEDAR+.

Although the Company believes that the expectations reflected in the forward-looking statements

are reasonable, there can be no assurance that such expectations will prove to be correct.

Readers are cautioned not to place undue reliance on forward -looking statements, as actual

results may differ materially from those expressed or implied by such statements. The forward -

looking statements contained in this news release are made as of the date hereof and the

Company undertakes no obligation to update or revis e any forward-looking statements, whether

as a result of new information, future events or otherwise, except as required by applicable

securities laws.