Connect with us

Battery Charging

Discussion in 'Electronic Basics' started by Ewan Sinclair, Nov 11, 2003.

Scroll to continue with content
  1. I was just wondering about the basics of charging batteries (NiCd or NimH),
    especially those that can't be taken out of the circuit they are in.

    Can you just stick them in like a capacitor, and they will soak up charge
    until full? Do they need to be fed a given voltage, or will anything charge
    them to full capacity given enough time? I was specifically thinking of
    having a digital camera that would grab frames a few times a day and charged
    up from solar panels using standard AA rechargeables.

    Thanks for any info

  2. Luhan Monat

    Luhan Monat Guest


    Choose a solar panel who's output is no more than 20% of the ampere-hour
    rating of the battery - this avoids exessive charging rates.

    Feed the solar panels thru an LM317 regulator configured to produce a
    voltage about 15% over the battery voltage. This will prevent
    overcharging the voltage on the batteries.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day