VRLA chrager using microcontroller

Discussion in 'General Electronics Chat' started by id_ruben, Jul 13, 2013.

  1. id_ruben

    Thread Starter New Member

    Oct 27, 2009
    ADC reads the voltage on the battery (VRLA 12V / LC-R127R2NA Panasonic).
    If the battery voltage is below 11V then the microcontroller turn on the SCR. if the battery voltage is greater then 14.4V the microcontroller turn off the SCR.

    Need Help:
    Is there a better way to charge VRLA baterrey ?
    Is using a 18V on the secondary transformer will damage the battery?
    What the mean by "constan voltage charger"?


  2. wayneh


    Sep 9, 2010
    Adding temperature compensation would be "better". It's also possible that the charging rate is too large for the battery and needs to be limited. But in general charging a lead acid battery to a voltage target is a valid strategy.
    No, that should be fine. You need the driving force anyway and could not use less than 15V or so.
    What part don't you understand?