IC to charge a 24 V lead acid battery

Discussion in 'The Projects Forum' started by donaldm444, Dec 1, 2010.

  1. donaldm444

    Thread Starter New Member

    Jul 16, 2010
    I have a 24 V DC signal (obtained from rectifying a 24 V ac waveform) and I would like to use the DC signal to charge a 24 V lead acid battery (2 12 V EnerSys batteries in series). I was thinking about using an IC, but I have looked around and found a massive amount of them. If anyone has any advice I would greatly appreciate it.
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    If you are rectifying 24VAC, you probably have closer to 30VDC instead of 24VDC.

    TSM1012 is a charge controller capable of constant current or constant voltage charging. It supports multiple chemistries through external setup, it isn't an "all in one" IC, you need to know the charge profile of the chemistry you are charging.

    You will be better off charging each battery individually rather than in series. Charging in series will allow one battery to show full before the charge is actually complete for the set.
    donaldm444 likes this.
  3. iONic

    AAC Fanatic!

    Nov 16, 2007
    You may also want to check the current rating of the 24V source as you may need several Amps to charge a 12V battery correctly...depending on it's size.

    donaldm444 likes this.