Document And Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2019	Jun. 25, 2019	Sep. 30, 2018
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			$ 4,999,032
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, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Ex Transition Period	false