- Tue Jan 13, 2009 11:47 am
#63368
Hi everyone! This is my first post here.
For more than a year ive been serching for a simple, yet effective, 2 cell li-ion/poly balanced charger circuit.
The closest ive been is this: http://www.wattflyer.com/forums/showthread.php?t=20575
But it has TO MANY components! I need something like MAX1555, but for 2 cells, with balancing.
I have 2 ideas that could work:
*A ballancer conected to both cells, and a 2 cell charger connecter to the cells in serie.
Problem?
MAX1665 is not for sale ¿? And i didnt find other IC as simple as this...
*A More simple and cost effective design would be a 12v source, 2 LDO 5v regulators and 2 MAX1555 in this way (inspired on the first link os this post):
The above configuration would be grate, but i dont know if it would work.
Disconecting the batteries from eachother and charging independently could be a "simple" solution, but im trying to avoid this so i could use the balanced connector to charge the batteries without having to cutopen the bat-pack and making a disconnection system
Other way could be a microcontroller, but im not confident building the charging process myself... so many people saying the batteries explode that it should be true!
If anyone has a design of 2 cell balanced charger and wants to share it, you are welcome
If someone has a design of 2 cell balanced charger and wants to SELL IT, contact me via PM.
Thanks!
For more than a year ive been serching for a simple, yet effective, 2 cell li-ion/poly balanced charger circuit.
The closest ive been is this: http://www.wattflyer.com/forums/showthread.php?t=20575
But it has TO MANY components! I need something like MAX1555, but for 2 cells, with balancing.
I have 2 ideas that could work:
*A ballancer conected to both cells, and a 2 cell charger connecter to the cells in serie.
Problem?
MAX1665 is not for sale ¿? And i didnt find other IC as simple as this...
*A More simple and cost effective design would be a 12v source, 2 LDO 5v regulators and 2 MAX1555 in this way (inspired on the first link os this post):
The above configuration would be grate, but i dont know if it would work.
Disconecting the batteries from eachother and charging independently could be a "simple" solution, but im trying to avoid this so i could use the balanced connector to charge the batteries without having to cutopen the bat-pack and making a disconnection system
Other way could be a microcontroller, but im not confident building the charging process myself... so many people saying the batteries explode that it should be true!
If anyone has a design of 2 cell balanced charger and wants to share it, you are welcome
If someone has a design of 2 cell balanced charger and wants to SELL IT, contact me via PM.
Thanks!
La gente ve las cosas que existen y se pregunta por qué...
Yo prefiero imaginar lo que no existe y preguntarme ¿Por qué no?
Yo prefiero imaginar lo que no existe y preguntarme ¿Por qué no?