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    Tips to make the battery last longer

    Discussion in 'Lenovo' started by arlab, Jan 3, 2008.

  1. arlab

    arlab Notebook Evangelist

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    Anyone has advices to increase the battery lifespan?

    I was told that letting the battery charge or discharge completely was bad.

    That setting the battery to start charging when below 65% and to stop charging at 88% was a good setup.

    I'm talking about a T61p, BTW.
     
    arlab, Jan 3, 2008
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  2. Arki

    Arki Super Moderator

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    You can get more information from the Battery Guide here on NBR.

    According to the NBR Battery Guide, storing the battery at approximately 40% is ideal.

    Break down of the Power Manager:

    Always fully charged (start when below 96%; stop at 100%): Self explanatory. Select this setting to always be charging your battery on AC mode. I don't recommend this.

    Optimize for battery lifespan (automatically change for me): I still do not understand this setting. I have set it for a month and it is identical to the Always fully charged option. It has never notified me when thresholds changed either. I do not recommend this setting.

    Custom: This is where I have mine set and I recommend this. Following the Battery Guide, I set my battery to Start charging when below 36% and to Stop charging at 40%. The battery may not always follow this rule though. Due to a bug in the software, the only work around I know of is to always set your Custom settings while on battery and then plug your AC in.

    Here are some example situations with these settings.

    Your battery is at 50%. With start 36% and stop 40%, your battery charge will stay at 50% when plugged in.

    Your battery is at 20%. Once plugged in, your battery will charge until 40% and stop.

    Perform Reset...: This will perform a battery reset; which means to fully drain the battery and recharge it back to 100%. This will provide more accuracy in battery readings. Perform this about every 30 charge cycles.

    After four months with this Custom setting and after 54 cycles, I have a Full charge capacity of 71.53 Wh. This is approximately 3.5 - 4 hrs with Wireless on and zero brightness.
     
    Arki, Jan 3, 2008
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