v3.26.1

Cover	3 Months Ended
Cover	Mar. 31, 2026
Entity Addresses [Line Items]
Document Type	S-1/A
Amendment Flag	true
Amendment Description	AMENDMENT NO. 12
Entity Registrant Name	AMERICAN BATTERY MATERIALS INC.
Entity Central Index Key	0001487718
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	500 West Putnam Avenue
Entity Address, Address Line Two	Suite 400
Entity Address, Address Line Three	Greenwich
Entity Address, City or Town	Connecticut 06830
City Area Code	(800)
Local Phone Number	998-7962
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Business Contact [Member]
Entity Addresses [Line Items]
Entity Address, Address Line One	500 West Putnam Avenue
Entity Address, Address Line Two	Suite 400
Entity Address, Address Line Three	Greenwich
Entity Address, City or Town	Connecticut 06830
City Area Code	(800)
Local Phone Number	998-7962
Contact Personnel Name	David E. Graber

Description of changes contained within amended document.

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Name of contact personnel

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Address Line 1 such as Attn, Building Name, Street Name

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Address Line 2 such as Street or Suite number

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Address Line 3 such as an Office Park

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Name of the City or Town

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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Two-character EDGAR code representing the state or country of incorporation.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Indicates that the company is a Smaller Reporting Company (SRC).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Local phone number for entity.

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AMERICAN BATTERY MATERIALS, INC. S-1/A