Laptop Battery question

Discussion in 'Photography Equipment & Products' started by Big Mike, Jul 15, 2010.

  1. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    The only laptop I have, is an old Compaq Presario. I need to replace the battery and I have a questions that Google isn't helping with.

    The battery I have, is a 9.6V NiMH...but most of the replacement models are 14.4V Li-on.

    So can I just replace the one I have with the 14.4V battery? And if so, would I need a new power adapter?

    Or do I need to stick with a 9.6V replacement?
     
  2. Robin Usagani

    Robin Usagani Been spending a lot of time on here!

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    You have to stick with the voltage Mike. If you use that battery, probably you will have blue screen telling you that you have too high of voltage. You need a 3 cells instead of 4 cells battery.
     
  3. RalphP13

    RalphP13 TPF Noob!

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    I can't give you a difinitive answer but I will offer an opinion.

    I know you can use different MAh (Milliamperes). It represents the amount of stored energy in your battery.

    Voltage in a battery refers to the "volume" of electricity that is delivered to your computer. Too much will cause overheating and you run the risk of frying your laptop or components. Apparently, some laptops have internal voltage regulators which allow you to use a higher voltage battery. You might want to call Compaq and see if your laptop can handle that voltage.

    The makeup of the battery NiMH vs NiCad vs Li-Ion doesn't really affect the laptop function given similar V and Amps.

    Short version: I would look for the same Voltage and Amps unless I knew for sure my laptop could handle it.

    Hope this helps.

    Thanks, Ralph
     
    Last edited: Jul 15, 2010
  4. Robin Usagani

    Robin Usagani Been spending a lot of time on here!

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    Hmmm.. I think the higher the MAh, the longer the battery will last in one charge. The higher the better.
     
  5. RalphP13

    RalphP13 TPF Noob!

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    This is true. I hope may post didn't confuse this issue.

    Ralph
     
  6. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    Thanks everyone. Yes, the mAH is the capacity and higher is better. Too bad about the voltage because the 14.6V ones that I've seen, have 4400mAH compared to the 3800mAH on my 9.6V.

    The part that sucks, is that I only paid $100 for the laptop, and now it looks like a replacement battery (with shipping) will cost me just as much.
     
  7. Mike_E

    Mike_E No longer a newbie, moving up!

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    Mike, If you are good at DIY, carefully split the battery at the seam and you will (most likely, I've never worked on a Compaq) find rechargable AA batteries in there. You can find AAs with tabs -instead of the normal ends- on line. Solder the required number together and into the case, reglue and you're good to go.
     
  8. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    It won't hurt to have a look...although, my soldering skills are terrible. :er:

    I'm also looking into just buying a cheap netbook/laptop.
     
  9. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    I can't get the thing open, it's pretty solid and the gap is tiny. I've never been good at opening plastic cases, they usually get pretty marked up and/or broken.

    Arg!
     
  10. Dao

    Dao No longer a newbie, moving up!

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    The ebay radio trigger mod? ;)
     
  11. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    You remember that? :er: :lol:
     
  12. Robin Usagani

    Robin Usagani Been spending a lot of time on here!

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    a screw or two might be hidden underneath a sticker.
     

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