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 want to charge 2 series cells of Li-ion or Li-polymer batteries at 1.2Amp current and
battery rating:
1400mAh 8.4V battery
can you gimme any circuits (low cost) ?
you need a constant current source, and a shutoff circuit to kill the current source once the battery is charged. i'll get a circuit for you to use with a 12V supply that's simple (the current source itself is 1 transistor, 2 diodes and 2 resistors). the shutdown circuit might get a little more complicated.
A Lithium rechargeable battery with two cells in series needs a "balancing circuit" so that one cell is not charged higher than 4.20V then it doesn't catch on fire. All proper lithium rechargeable batteries and chargers have a separate balancing connector.
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.
