changing 12 volts gel cell battery using solar panel

Discussion in 'General Electronics Chat' started by mrel, May 27, 2016.

  1. mrel

    Thread Starter Senior Member

    Jan 20, 2009
    when changing 12 volts gel cell battery using solar cell is it better to have higher voltage or higher current to full the charge the battery.
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    It's better to use a dedicated charge controller IC so that the battery can be charged according to the manufacturer's recommendations.
    Suggested reading.
    nsaspook likes this.
  3. bwilliams60

    Well-Known Member

    Nov 18, 2012
    Gel cell batteries are sensitive to charging voltages. High voltage will damage the battery. Refer to the manufacturers specs for the proper voltage. As for current, low current slow charge will always be the best no matter what kind of battery.
  4. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    It's heat that's the main cause for battery degradation and gel cells are sensitive due to their physical construction. For systems designed with good thermal management (passive as with large traction batteries or active as with many Electric vehicles liquid cooled BMS systems) the rate of recharge has little impact on battery life as simply charging at any rate itself degrades the battery with elevated temperature of the chemistry increasing capacity loss.