Battery Tips, Battery Blogs, Laptop Battery Tips, Power Tools Battery Tips

How Many Cells Are In A Laptop Battery?

Question from a reader: “How many cells are in the Toshiba Satellite M105-S3041 Laptop Battery? The battery is for a Toshiba Satellite M105-S3041 and its technical ratings are 10.8 volts 8800 mAh, Lithium Ion.”

The question from the reader is a great question for it gets to the heart of battery manufacturing and begins to unravel the power of a battery. The answer is simply: 12 cells. But what does the answer mean and how does the number of cells relate to the overall value of a battery? Let’s find out…

The cell is a 3.6V cylindrical Li-Ion cell. The cell has no memory effect (distinguish between digital memory effect) and longer storage life than NiMH battery cells. The cell is light weight and has a high energy density. It is in effect perfect for building batteries for laptop and other portable power devices.

[caption id="attachment_226" align="aligncenter" width="453" caption="4-Cell LENOVO FRU 42T5227 Laptop Battery"][/caption]

4-Cell LENOVO FRU 42T5227 Laptop Battery

• Battery Type: Li-ion
• Volt: 14.4 V
• Capacity: 2600 mAh

The additional technical specifications for the battery cell include:

* Nominal Voltage Average 3.7 V – the concept of nominal voltage is that voltage range exists depending on the number of cells in the battery.
* Nominal Capacity – 2200 mAh (above 2200 the stability of lithium based cells is called into question)
* Max. Charging Current – 2.4 Amps Max.
* Max. Discharging Current – 4.6 Amps max.
* Dimensions (DxH)  18.3 mm (Max 18.4) x 64.9 mm (Max 65.1)
* Weight   46.5 g (1.64 oz)
* Internal Impedance: less or equal to 90 ohms
* Cycle Performance is 80% of initial capacity at 300 cycles

Now as stated above the reader asked how many cells were in the Toshiba Satellite M105-S3041 Laptop Battery? The battery is rated at 10.8 volts and a capacity of 8800 mAh.

As I mentioned above the nominal voltage average is 3.7V. Some manufacturers may use 3.6V and some may use 3.7V. In the case of a laptop battery with 10.8V the nominal voltage rating used is 3.6V. Thus if we divide 10.8V by 3.6V we get 3. Thus 3 cells in a series. We also know that the batteries capacity is 8800 mAh. We know the nominal capacity is 2200 mAh. Therefore if we divide 8800 mAh by 2200 mAh then we get 4 in parallel.

Therefore we have 3 cells in series X 4 cells in parallel equals 12 cells in total.

[caption id="attachment_230" align="aligncenter" width="453" caption="6-CELL ACER TravelMate 3270 Series Laptop Battery"][/caption]

6-CELL ACER TravelMate 3270 Series Laptop Battery

• Battery Type: Li-ion
• Volt: 11.1 V
• Capacity: 4400 mAh

ACER Laptop Battery Articles & Maintenance Tips

Upgrade my ACER Laptop Battery from Ni-MH to Li-ion
Ni-Cd, Ni-MH and Li-ion ACER Laptop Battery are all fundamentally different from one another and cannot be substituted unless the laptop has been pre-configured from the manufacturer to accept more than one type of battery chemistry. Please refer to your manual to find out which rechargeable battery types the laptop device supports or use our ACER Laptop Battery Finder above to find all the compatible Laptop Battery for your device. It will automatically list all of the battery chemistries supported by your specific device. If your device does allow you to upgrade the battery from Ni-MH to Li-ion, you will typically get longer run times.

For example, if your laptop uses a NI-MH battery that is 9.6 Volts, 4000mAh and the new Li-ion laptop battery is 14.4 Volt, 3600mAh, then you will obtain longer run time with the Li-ion battery.

[caption id="attachment_233" align="aligncenter" width="453" caption="9-CELL ACER TravelMate 3270 Series Laptop Battery"][/caption]

9-CELL ACER TravelMate 3270 Series Laptop Battery

• Battery Type: Li-ion
• Volt: 11.1 V
• Capacity: 7200 mAh

Example.

Li-ion: 14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
Ni-MH: 9.6 Volts x 4 Amperes = 38.4 Watt Hours
The Li-ion is stronger and has longer run time.

How can I maximize the performance of my ACER Laptop Battery ?
There are several steps you can take to help you get maximum performance from your Laptop Battery:

Prevent the Memory Effect – Keep the Laptop Battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect.

Keep the ACER Laptop Battery Clean – It’s a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device.

Exercise the Battery – Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a Laptop Battery has not been used for a long period of time, perform the new battery break in procedure described above.

Battery Storage – If you don’t plan on using the Laptop Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use.

[caption id="attachment_235" align="aligncenter" width="453" caption="6-CELL TOSHIBA PA3399U-1BAS Laptop Battery"][/caption]

6-CELL TOSHIBA PA3399U-1BAS Laptop Battery

• Battery Type: Li-ion
• Volt: 10.8 V
• Capacity: 4400 mAh

What is the run time of Laptop Battery?
ACER Laptop Battery have two main ratings on them: Volts and Amperes. Because size and weight of Laptop Battery is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Mill amperes. One thousand Mill amperes equals 1 Ampere. When buying a battery, select batteries with the most Mill amperes (or Ah). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:

14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).

14.4 x 4.0 = 57.60 Watt-Hours

Watt-Hours signifies the energy needed to power one watt for one hour. This ACER Laptop Battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this Laptop Battery could power your laptop for 2.8 hours.

Understanding your ACER Laptop Battery Needs
We strive to make you Laptop Battery purchases easy. Since we understand that finding the right batteries for your needs can be overwhelming and confusing at times we developed a Laptop Battery finder tool to help find the right size for the make and model of your equipment. We also offer educational articles and tips to help you conserve your batteries and understand common problems. By us providing education you are able to make the right purchasing decisions as well as provide proper care for all of your electronics.

[caption id="attachment_237" align="aligncenter" width="453" caption="6-CELL TOSHIBA Tecra A8-S8514 Laptop Battery"][/caption]

6-CELL TOSHIBA Tecra A8-S8514 Laptop Battery

• Battery Type: Li-ion
• Volt: 10.8 V
• Capacity: 4400 mAh

Posted in Laptop Battery Tips | 25 Comments »

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• 4-Cell LENOVO FRU 42T5227 Laptop Battery
  • Battery Type: Li-ion
  • Volt: 14.4 V
  • Capacity: 2600 mAh

  The additional technical specifications for the battery cell include:

  * Nominal Voltage Average 3.7 V – the concept of nominal voltage is that voltage range exists depending on the number of cells in the battery.
  * Nominal Capacity – 2200 mAh (above 2200 the stability of lithium based cells is called into question)
  * Max. Charging Current – 2.4 Amps Max.
  * Max. Discharging Current – 4.6 Amps max.
  * Dimensions (DxH)  18.3 mm (Max 18.4) x 64.9 mm (Max 65.1)
  * Weight   46.5 g (1.64 oz)
  * Internal Impedance: less or equal to 90 ohms
  * Cycle Performance is 80% of initial capacity at 300 cycles

  Now as stated above the reader asked how many cells were in the Toshiba Satellite M105-S3041 Laptop Battery? The battery is rated at 10.8 volts and a capacity of 8800 mAh.

  As I mentioned above the nominal voltage average is 3.7V. Some manufacturers may use 3.6V and some may use 3.7V. In the case of a laptop battery with 10.8V the nominal voltage rating used is 3.6V. Thus if we divide 10.8V by 3.6V we get 3. Thus 3 cells in a series. We also know that the batteries capacity is 8800 mAh. We know the nominal capacity is 2200 mAh. Therefore if we divide 8800 mAh by 2200 mAh then we get 4 in parallel.

  Therefore we have 3 cells in series X 4 cells in parallel equals 12 cells in total.

  6-CELL ACER TravelMate 3270 Series Laptop Battery

  • Battery Type: Li-ion
  • Volt: 11.1 V
  • Capacity: 4400 mAh

  ACER Laptop Battery Articles & Maintenance Tips

  Upgrade my ACER Laptop Battery from Ni-MH to Li-ion
  Ni-Cd, Ni-MH and Li-ion ACER Laptop Battery are all fundamentally different from one another and cannot be substituted unless the laptop has been pre-configured from the manufacturer to accept more than one type of battery chemistry. Please refer to your manual to find out which rechargeable battery types the laptop device supports or use our ACER Laptop Battery Finder above to find all the compatible Laptop Battery for your device. It will automatically list all of the battery chemistries supported by your specific device. If your device does allow you to upgrade the battery from Ni-MH to Li-ion, you will typically get longer run times.

  For example, if your laptop uses a NI-MH battery that is 9.6 Volts, 4000mAh and the new Li-ion laptop battery is 14.4 Volt, 3600mAh, then you will obtain longer run time with the Li-ion battery.

  9-CELL ACER TravelMate 3270 Series Laptop Battery

  • Battery Type: Li-ion
  • Volt: 11.1 V
  • Capacity: 7200 mAh

  Example.

  Li-ion: 14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
  Ni-MH: 9.6 Volts x 4 Amperes = 38.4 Watt Hours
  The Li-ion is stronger and has longer run time.

  How can I maximize the performance of my ACER Laptop Battery ?
  There are several steps you can take to help you get maximum performance from your Laptop Battery:

  Prevent the Memory Effect – Keep the Laptop Battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect.

  Keep the ACER Laptop Battery Clean – It’s a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device.

  Exercise the Battery – Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a Laptop Battery has not been used for a long period of time, perform the new battery break in procedure described above.

  Battery Storage – If you don’t plan on using the Laptop Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use.

  6-CELL TOSHIBA PA3399U-1BAS Laptop Battery

  • Battery Type: Li-ion
  • Volt: 10.8 V
  • Capacity: 4400 mAh

  What is the run time of Laptop Battery?
  ACER Laptop Battery have two main ratings on them: Volts and Amperes. Because size and weight of Laptop Battery is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Mill amperes. One thousand Mill amperes equals 1 Ampere. When buying a battery, select batteries with the most Mill amperes (or Ah). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:

  14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).

  14.4 x 4.0 = 57.60 Watt-Hours

  Watt-Hours signifies the energy needed to power one watt for one hour. This ACER Laptop Battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this Laptop Battery could power your laptop for 2.8 hours.

  Understanding your ACER Laptop Battery Needs
  We strive to make you Laptop Battery purchases easy. Since we understand that finding the right batteries for your needs can be overwhelming and confusing at times we developed a Laptop Battery finder tool to help find the right size for the make and model of your equipment. We also offer educational articles and tips to help you conserve your batteries and understand common problems. By us providing education you are able to make the right purchasing decisions as well as provide proper care for all of your electronics.

  6-CELL TOSHIBA Tecra A8-S8514 Laptop Battery

  • Battery Type: Li-ion
  • Volt: 10.8 V
  • Capacity: 4400 mAh

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