Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2019	Dec. 20, 2019	Mar. 31, 2019
Details
Registrant CIK	0001576873
Fiscal Year End	--09-30
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	000-55088
Entity Registrant Name	AMERICAN BATTERY METALS CORP
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	33-1227980
Entity Address, Address Line One	930 Tahoe Blvd. Suite 802-16
Entity Address, City or Town	Incline Village
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89451
Entity Address, Address Description	Address of principal executive offices
City Area Code	775
Local Phone Number	473-4744
Phone Fax Number Description	Registrant's telephone number
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 22,182,023
Entity Common Stock, Shares Outstanding		166,234,301
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY