Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
i've finished my battery charger for my r/c car.but the problem is i always forgot to switch off the charger and the result is my battery got very hottt..so i need a timer to swich off the charger.i need a 5minutes to 15 minutes timer.but i dont know how to make the timer
If your batteries are NiCads, letting them go hot does them not any good at all :cry:
Instead of a timer you would be better off using a temperature sensor to turn the charger off.
NiCads stay cool while accepting charge but go warm quickly once fully charged. You find temperature switches in all the battery packs for power tools, their charger switches automatically off by the temerature sensing.
You can get neat little bimetallic temperature switches, from about 40 degrees C onwards and one of these would do nicely. Make sure is an 'off when hot' type.
Using a timer would involve a lot of guesswork in setting unless your batteries are always discharged to exactly the same level.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
