solar powerde aa Nimh battery charger help

Discussion in 'The Projects Forum' started by ahead, Mar 14, 2013.

  1. ahead

    Thread Starter New Member

    Nov 17, 2012
    Hi Guys

    I am working on my solar powered AA NiMH battery charger project. I have finished my charging circuit design, however, i also need to design a battery monitor circuit to indicator if the battery is charging and full charged. My professor asked us to use 2 LEDs lights as indicator lights. In the circuit design, i can design the whole circuit for charging 1 aa battery. Can anyone recommend a battery monitor circuit design for only indicating one battery status?
  2. crutschow


    Mar 14, 2008
    You can't simply determine the charge condition of a NiMH battery by measuring the charging voltage. You need a circuit that monitors the change in voltage as it charges.