Document And Entity Information - shares	9 Months Ended
	Dec. 31, 2018	Feb. 07, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	TEL INSTRUMENT ELECTRONICS CORP
Document Type	10-Q
Current Fiscal Year End Date	--03-31
Entity Common Stock, Shares Outstanding		3,255,887
Amendment Flag	false
Entity Central Index Key	0000096885
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Ex Transition Period	false