Lithion-ion Battery Public Service Announcement

Posted in personal at 8:25 pm by wingerz


For a very long time, I’ve been letting my batteries run out to near empty before recharging them. It’s probably because many years ago I was warned that charging the cordless phone too frequently would drastically shorten the battery life. I recently read that most rechargeable battery packs (like the ones found in my camera, phone, and DS) are lithium-ion, which prefer shallow, frequent charges. Not sure if this is common knowledge or not.


  1. Lee Feigenbaum said,

    October 16, 2006 at 9:53 pm

    Check your batteries first. My camera batteries are NiMH which have different properties. (No memory, but a lifetime limited number of charge cycles, IIRC.)


  2. Cy said,

    October 16, 2006 at 10:51 pm

    NiMH batteries don’t like deep discharge cycles very much. If you keep it within a shallow range of charge (the Prius’ battery stays between 40% and 80% of full charge at all times), they’ll last much longer.

  3. wingerz said,

    October 17, 2006 at 9:05 am

    Yup, definitely poke around the Battery University site linked above for other battery characteristics, and be sure to check your batteries. Unfortunately, just reading the site made me a bit paranoid about taking care of my batteries. I’m going to have to get them their own refrigerator.

  4. Bruns said,

    March 30, 2008 at 8:55 pm

    I have some 12 v Lithium batteries that cost a bunch. I suspect they are lithium-ion batteries (the type they are trying to get in advanced electric cars). I understand lithium-ion batteries are rechargeable and would like to do so. According to Dennis S. in Road and Track magazine you have to be very careful how these batteries are recharged. Too aggressive charging can result in shorts and perhaps fires. Any comments?

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