Question about Toshiba Satellite A70-S249 Notebook

1 Answer

Hi, can I operate the A 70 on mains power without a battery

Hi Team I wish to use my laptop as a desk top and mobile and wonder if if would be best to run without battery when on mains power
Thanks
Allen

Posted by on

  • kateal Nov 14, 2008

    Hi Commanderzod, thanks for your advice I thought I might be able to extend the life of the battery by removing it when on mains power for extended periods.

    Allen

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  • 112 Answers

Your battery will not charge until it reaches a lower limit of charge.
Whilst in the Laptop and using mains power your battery acts like a UPS and is available soon as you lose power.
The battery life will not be degraded or improved, removing it whilst plugged into mains.
When using Laptop om=n mains the battery is always there in case you lose power or somehow the lead gets pulled out inadvertantly, so you will not lose work.
I use a laptop all the time for work just got a new Latitude D630. The battery in my old lappy is still good for 2hrs+ and never been removed.
80% of its life was on mains.
Hope this helps.

Posted on Nov 14, 2008

  • Geoff Champion
    Geoff Champion Nov 15, 2008

    Thanks for the fixya kateal.

    If only we could make them last longer.

    But that would mean less after market profit for the manufacturers.

    Glad I could help.

    Zod

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Hi nabhanizatio

DELL LATITUDE C610 BATTERY CHARGE FAILURE

The likely cause of the original battery fault is a very common mistake in the way laptops are used. A laptop battery, working at optimum efficiency, whether of the older Nickel Cadmium and Nickel Metal Hydride or newer Lithium Ion types, is meant to charge under power and then discharge under use, if it is to have a long and useful life. This means that it should be used in a similar way to a cellphone's battery - connected to mains electricity and charged up when low or flat and then disconnected from the power and used on battery power alone until the power level means the cycle needs repeating. Many people, however, unwittingly use their laptops like desktop PCs and leave the mains electricity permanently connected to it even after the battery is fully charged. The reason that people cite for doing this is 'convenience'. This, however, is a mistake.

Laptops have more flexibility than cellphones in that, if they are mainly used in one place rather than as mobile devices, then it is possible to charge the battery to full capacity, disconnect from the mains, then remove and keep the battery until the next time the laptop's mobility function is required (periodically recharge the stored battery if not in use for long periods of time because the charge slowly dissipates when not in use), reconnect the mains to the battery-less laptop and use it like that, ad infinitum.

When a laptop battery is fully charged, what it really wants to do is discharge. However, maintaining the mains connection prevents it from doing so. The Power Management
System on the motherboard is designed to cope with long periods of either battery powered or battery-less mains powered use, but not long periods of simultaneous battery + mains powered use. A fully charged battery still connected to mains electricity has no means of discharging and various power sensitive components such as the Power Inverter, Cold Cathode Backlight, LCD Panel, Graphics Chip and Motherboard Power Management Stystem can become damaged by the power bottleneck created.

Using the battery in this wrong way also gradually depletes the charging capacity of the cells, until eventually, the cells can carry no charge, meaning a dead battery. A dead battery, where the cells are depleted, left in the laptop with the mains connected, is even worse for the Power Managent System
because the flow of power to the motherboard via the dead battery cells is inefficient and intermittent, creating battery overheating, low CPU Cooling Fan speed, inferior cooling and consequent internal overheating hazards in addition to potential electrical damage to several components. When damage to the Motherboard Power Management System passes a certain point, even a new battery might not charge - the situation in which you now find yourself.

Loose DC jacks, leading to intermittent power drops and surges, are typically caused by the jack being allowed to take the weight of the heavy transformer box on the laptop's power cable. The solution is to ensure that the laptop is never held, carried or used with the transformer hanging unsupported. If the laptop is in use, the transformer should be disconnected, carried, placed on a desk or table near the laptop (if the cord is short) or laid completely full-weight-flat on the floor (if the cord is long enough). Also, a Surge Suppressor/Surge Protector should always be used between the mains power socket and all computer
equipment, rather than directly to the mains.

If either the Motherboard Power Management System or DC Jack are ever damaged, your laptop would require professional specialist repair by a Component Level Laptop Repair Specialist, providing No Fix No Fee, Warrantied Repairs ( typically 3-6 months Repair Warranty).

I hope this helps.


If this answer does help you, please take the time to rate it. This helps answerers better understand the needs and the point of view of the asker and guides us in exploring the best ways to provide useful, high quality answers. If you need further help, please feel free to post another question or add a comment to this question.


Thanks for using FixYa.

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Hi shaun par914...

If you have an ohm meter, check you ac adapter ouput to make sure it has electricity at the plug and is not defective.
Sorry, Otherwise if it is working, then you must replace your battery as there is no fixing a defective battery.
Please tke time to rate me

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Hi

The likely cause of the original battery fault and the key to what to look out for in future with the new battery is a very common mistake in the way laptops are used.

A laptop battery, working at optimum efficiency, whether of the older Nickel Cadmium and Nickel Metal Hydride or newer Lithium Ion types, is meant to charge under power and then discharge under use, if it is to have a long and useful life.

This means that it should be used in a similar way to a cellphone's battery - connected to mains electricity and charged up when low or flat and then disconnected from the power and used on battery power alone until the power level means the cycle needs repeating.

Many people, however, unwittingly use their laptops like desktop PCs and leave the mains electricity connected to it even after the battery is fully charged. The reason that people cite for doing this is 'convenience'.

This, however, is a mistake.

Laptops have more flexibility than cellphones in that, if they are mainly used in one place rather than as mobile devices, then it is possible to charge the battery to full capacity, disconnect from the mains, then remove and keep the battery until the next time the laptop's mobility function is required (periodically recharge the stored battery if not in use for long periods of time because the charge slowly dissipates when not in use), reconnect the mains to the battery-less laptop and use it like that, ad infinitum.

When a laptop battery is fully charged, what it really wants to do is discharge. However, maintaining the mains connection, prevents it from doing so. The
power management system on the motherboard is designed to cope with long periods of either battery powered or battery-less mains powered use, but not long periods of simultaneous battery + mains powered use. A fully charged battery still connected to mains electricity has no means of discharging and various power sensitive components such as the Power Inverter, Cold Cathode Backlight, LCD Panel and Graphics Chip can become damaged by the power bottleneck created.

Using the battery in this wrong way also gradually depletes the charging capacity of the cells, until eventually, the cells can carry no charge, meaning a dead battery. A dead battery, where the cells are depleted, left in the laptop with the mains connected, is even worse for the Power M
anagement System because the flow of power to the motherboard via the dead battery cells is inefficient and intermittent, creating battery overheating, low CPU Cooling Fan speed, inferior cooling and consequent internal overheating hazards in addition to potential electrical damage to several components.

Loose DC jacks, leading to intermittent power drops and surges, are typically caused by the jack being allowed to take the weight of the heavy transformer box on the laptop's power cable. The solution is to ensure that the laptop is never held, carried or used with the transformer hanging unsupported. If the laptop is in use, the transformer should be disconnected, carried, placed on a desk or table near the laptop (if the cord is short) or laid completely full-weight-flat on the floor (if the cord is long enough).

Also, always use a Surge Supressor/Surge Protector between the mains power socket and all Co
mputer equipment, never directly to the mains.

When battery cells are dead, a replacement battery is required and should be bought and installed as soon as possible. In the meantime, the old, dead battery should be removed and the laptop used (battetyless) on mains power alone.

If either the Motherboard Power Management System or DC Jack are ever damaged,
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I hope this helps.


If this answer does help you, please take the time to rate it. This helps answerers better understand the needs and the point of view of the asker and guides us in exploring the best ways to provide useful, high quality answers. If you need further help, please feel free to post another question or add a comment to this question.

Thanks for using FixYa

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