Document And Entity Information - shares	3 Months Ended
	Jun. 30, 2019	Aug. 09, 2019
Document Information Line Items
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	Jun. 30, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Ex Transition Period	false
Entity Interactive Data Current	Yes