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Hardware Thread, Tilting laptops to make them work in Technical; Hi Batman, glad they fixed the problem with their laptops... just wanted to say: A Lithium Ion battery is a ...
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    Lithium batteries

    Hi Batman, glad they fixed the problem with their laptops... just wanted to say:

    A Lithium Ion battery is a lot like a complicated and finicky chemical pump that exploits what happens when certain materials (mostly metals) are placed together in an electrolyte solution.

    The way a lithium ion battery works is by moving lithium ions and electrons from one electrode of the battery to the other. The electrons move trough your your laptop circuitry to power it, while the lithium ions move trough some fluid(gel) to balance the electrons movement. If the lithium ions can't move through the fluid then the electrons can't move through your laptop either. The problem is that the fluid that allows the lithium ions to move from electrode to electrode degrade and dry over time. As it becomes more and more difficult for the lithium ions to move it also becomes more and more difficult for the battery to power your laptop.


    The fluid containing the lithium ions will naturally degrade over time at room temperature, but there are several factors that will accelerate the degradation. The first one is heat: the hotter the laptop battery the faster the fluid gets dry. The second factor is charge cycles. When you recharge your laptop battery this generates significant heat in the battery and helps degrade the fluid. Leaving the battery constantly charged also has a negative effect on the life of the fluid.

    If you have a laptop trolley using laptops plugged into 13 amp pin sockets inside the trolley, both the AC Adaptors and laptops generate a lot of heat. When you have a trolley that charges laptops vertically like we had, the AC Adaptors stored in the bottom of the trolley disperses heat, which as you know rises towards the vertical laptops charging at the top, generating more heat.

    We found our laptop batteries lasting only a few months. Eversince we have switched to a trolley that charges laptops horizontally, we have had better and longer battery life. We have also gone for a preconfigured lead option to get rid of using AC adaptors which generated more heat.

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    @flowerpot78: To put your mind at rest, our laptops are charge horizontally

    You really should watch the video though

  3. #33
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    Quote Originally Posted by flowerpot78 View Post
    Hi Batman, glad they fixed the problem with their laptops... just wanted to say:

    A Lithium Ion battery is a lot like a complicated and finicky chemical pump that exploits what happens when certain materials (mostly metals) are placed together in an electrolyte solution.

    The way a lithium ion battery works is by moving lithium ions and electrons from one electrode of the battery to the other. The electrons move trough your your laptop circuitry to power it, while the lithium ions move trough some fluid(gel) to balance the electrons movement. If the lithium ions can't move through the fluid then the electrons can't move through your laptop either. The problem is that the fluid that allows the lithium ions to move from electrode to electrode degrade and dry over time. As it becomes more and more difficult for the lithium ions to move it also becomes more and more difficult for the battery to power your laptop.


    The fluid containing the lithium ions will naturally degrade over time at room temperature, but there are several factors that will accelerate the degradation. The first one is heat: the hotter the laptop battery the faster the fluid gets dry. The second factor is charge cycles. When you recharge your laptop battery this generates significant heat in the battery and helps degrade the fluid. Leaving the battery constantly charged also has a negative effect on the life of the fluid.

    If you have a laptop trolley using laptops plugged into 13 amp pin sockets inside the trolley, both the AC Adaptors and laptops generate a lot of heat. When you have a trolley that charges laptops vertically like we had, the AC Adaptors stored in the bottom of the trolley disperses heat, which as you know rises towards the vertical laptops charging at the top, generating more heat.

    We found our laptop batteries lasting only a few months. Eversince we have switched to a trolley that charges laptops horizontally, we have had better and longer battery life. We have also gone for a preconfigured lead option to get rid of using AC adaptors which generated more heat.
    Are you on commission from LapSafe?

    What you're basically saying is that charging vertically breaks the battery. That's going to stop it working in whichever orientation you hold the laptop, isn't it?

    Even if the battery is broken the laptop should still work fine when it is plugged in, so if the fault persists with the battery disconnected we can eliminate the battery.

    I think it's important to take a logical approach to fault finding; it's a waste of time to discuss hypothetical problems that have already been eliminated.

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    Unhappy

    Glad to see you holding a Dr Pepper can on your profile pick batman... I mean hypothectically speaking ...'What's the worst that could happen?' I was merely suggesting a possible cause for the laptops failing, did not mean to waste anyone's time.

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    hi guys, i now have two of these with exactly the same fault as this on both. it appears to me to be either track break via fault or most likely a BGA joint break under the CPU connector or large ic. The fault appears to be a very important control line like the read/write line as the unit freezes ie no activity from screen or mouse movement then carries on once unit is flexed no drop outs or errors etc. The cases on these cause the units to flex quite a lot so old ones are probably prone to this as the do get picked up by the corners. also more modern laptops have harder cases. only way to fix these before skipping them is probably to apply heat over the large ics to reflow the solder underneath. Let me know how you get on if you try this. heat only needs to get to 180Dec C to melt solder so dont blow torch too much!!!. Else- get another make of lappy. pls email me if successful. BR Steve

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    hi guys, i now have two of these with exactly the same fault as this on both. it appears to me to be either track break via fault or most likely a BGA joint break under the CPU connector or large ic. The fault appears to be a very important control line like the read/write line as the unit freezes ie no activity from screen or mouse movement then carries on once unit is flexed no drop outs or errors etc. the cases on these cause the units to flex quite a lot so old ones are probably prone to this as the do get picked up by the corners. also more modern laptops have harder cases. only way to fix these before skipping them is probably to apply heat over the large ics to reflow the solder underneath. Let me know how you get on if you try this. heat only needs to get to 180Dec C to melt solder so dont blow torch too much!!!. Else- get another make of lappy. pls email me if successful. BR Steve

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