Document And Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2018	Jul. 09, 2018	Sep. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	TEL INSTRUMENT ELECTRONICS CORP
Document Type	10-K
Current Fiscal Year End Date	--03-31
Entity Common Stock, Shares Outstanding		3,255,887
Entity Public Float			$ 5,899,441
Amendment Flag	false
Entity Central Index Key	0000096885
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY