What causes a battery not to hold a charge?


battery
CRP asked:


My cousin and I were debating over this last night. I unplug my laptop once it is fully charge and he said that leaving it plugged in after it is charged isn’t what damages the battery but it is charging it before the battery is low. What do you think/know? I am a college student and would like this (brand new) battery to last me for at least the next four years.

This entry was posted on Sunday, March 21st, 2010 at 12:00 am and is filed under Laptops & Notebooks. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

4 Responses to “What causes a battery not to hold a charge?”

  1. John C Says:
    March 22nd, 2010 at 9:06 pm

    Charging it before the battery is low, is not a problem, and neither is leaving it plugged in once it has charged. It should switch over to AC power once it has charged. Rechargeable batteries can only be recharged so many times. Your best bet for keeping your battery for 4 years is to not use it that much. Use AC power when ever possible! John C

  2. abranch29 Says:
    March 26th, 2010 at 8:15 am

    well batteries will diminish over time needless any condition, so even in four years, you will notice a drop in battery life. in regards, constant removal and recharge every time the battery empties will cause a strain abranch29

  3. Jerry J Says:
    March 29th, 2010 at 1:49 am

    Battery is probably going/gone bad Jerry J

  4. Aaron Says:
    March 29th, 2010 at 4:33 am

    First, no laptop battery is going to last you for three or four years. The average lifespan is 18 months. After that, the life of the battery is usually under 60 minutes.

    Laptop batteries are commonly lithium-ion. As a result, they do not have a memory, but they do have a limited number of charges, so, remove the battery when you are not using it (ie: you are sitting at a desk for a couple hours and are not mobile) to increase it’s life. Aaron

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