Lead Acid Battery Charger

Thread Starter

happyfpga

Joined Oct 4, 2008
7
Hi, I have few knowledge about battery.

I need to build a charger for 12V lead acid battery. Do I have to use a constant current circuit? Which part determins the charging current, battery or charger? I have a mature circuit labeled up to 4A charging current. The battery needs 0.4A charging current. Can they work together?

Thanks
 

Externet

Joined Nov 29, 2005
1,411
No, you have to charge with constant voltage. Depending manufacturer of the battery, can be around 13.5V to 14V
The current is determined by the battery charge state and size.
A charger capable of up to 4 Amperes can be used to charge at a rate of 0.4 Amperes.
Miguel
 
Top