CP651529-XX original Fujitsu battery 72Wh
Substitute part numbers:
CP671396-XX, CP671397-XX
- Manufacturer
- Fujitsu
- Item Number
- CP651529-XX
- Sub-Partnumbers
- CP671396-XX, CP671397-XX
- Sicherheitsinformationen
- Sicherheits- & Herstellerkontakt-Informationen
The offered manufacturer number is an alternative (substitute) to the spare part number you are looking for.
Common data
- Condition
- New
- Manufacturer
- Original directly from Fujitsu
- Color
- black
Technical Data
- Battery type
- standard
- Battery technology
- Li-Ion
- Capacity
- 6700 mAh / 72 Wh
- Output (volt)
- 10.8 Volt
- Number of cells
- 6 Cells
Battery Quality
These original Fujitsu batteries are unused and fully functional.
Due to the age of the compatible laptop models, this battery is no longer being produced, which means that they may have an older production date.
Due to a certain age, it may happen that such a battery cannot always be used immediately after being inserted into the laptop. They can lose too much voltage over a longer period of time and may need to be reactivated first.
What can you do to reactivate a new laptop battery with too low a voltage?
The laptop's intelligent charging electronics and a little patience can help here.
If the actual nominal voltage of the new laptop battery is only slightly below the actual nominal voltage, it often helps to leave the battery in the laptop while it is switched off and connect the power supply for a longer period of time. During this time, the laptop's charging electronics try to charge the battery in pulses and very gently with a low charging current of only around 100 mA until the normal nominal voltage is reached. This is the crucial phase in which many apparently defective new laptop batteries can be completely reactivated. After that, the charging process is continued with a normal charging current of 1-2 amps until the battery has reached its nominal capacity.
Give the charging electronics a few hours. Stimulating the battery with pulses of low charging current can take a really long time.
The new laptop battery is deeply discharged and cannot be reactivated. Is this a warranty case?
Yes, if the new laptop battery can no longer be reactivated, we will of course exchange it free of charge.
Category
- Category
- Batteries
- Usage
- Laptop
- Excerpt of suitable models for P/N CP651529-XX
- Fujitsu LifeBook E546 , Fujitsu LifeBook A557 , Fujitsu LifeBook A357 , Fujitsu LifeBook E744 , Fujitsu LifeBook E734 , Fujitsu LifeBook E754 , Fujitsu LifeBook E554 , Fujitsu LifeBook E544 , Fujitsu LifeBook E556 , Fujitsu LifeBook E736
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Videos & Contributions
Determine the battery life of the notebook - this is how it works!
Replacing the external battery - Cuidado de la batería - Tips & hints
This video shows how you can quickly and easily remove the external battery from the notebook and insert it again.
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Important and useful informations about laptop Batteries
Frequently asked questions about Batteries
- How do I take care of and charge my battery correctly?
- If you mainly use your laptop while it’s connected to mains, you should remove your battery and only charge it every one to two months.
- Don’t fully discharge your battery, because this can lead to a depth discharge. Charge the battery again, when between five and seven percent of charge remain.
- If possible charge your battery while the notebook is turned off. The optimal temperature for batteries is between 10 and 30°C, this range is usually exceeded in a powered-on notebook.
- If you have multiple batteries for your device, rotate between them.
- After being uncharged for a while, the battery needs about two to three complete charge cycles to reach its full capacity again.
- Avoid high temperatures for example due to direct sunlight or being left in a hot car. High temperatures increase the self-discharging rate.
- Rechargeable Lithium-Ion batteries, which are found in nearly all modern electronics, have a limit of somewhere between 500 to 1000 charge cycles. However, turning your laptop on and off while plugged in is one charge cycle. This is why we recommend removing the battery when using the device plugged in for a longer time.
- Furthermore, it would be optimal to never fully charge or discharge your battery, but rather to keep it between 20% 80% charge.
Some manufacturers integrate a battery protection function in their notebooks. This function only allows charging up to 80% capacity to prolong he lifespan of the battery.
The so-called memory-effect of a Lithium-Ion battery can be disregarded in normal use, a complete charge after a complete discharge is not needed.
On the contrary for many modern devices the opposite is true, it is best to keep the charge between 20% and 80%. This is due to the sensitivity of Lithium-Ion batteries to depth discharge and overcharge. However, in most devices control electronics prevent the user from making any grave mistakes. For example, Apple implements a function which charges the battery as fast as possible up to 80% but charging slows down a lot after that. This conserves the lifespan of the battery at the cost of charge time.
One thing that should be avoided though is leaving your device plugged in for many days in a row. The battery should be discharged once in a while to move the ions inside.
- How long does the charge of a battery last
This is a question, that is hard to answer, because it depends on a lot of different factors such as CPU, Display, GPU. Usually a 15.6" notebook consumes about 20W when using the battery. A 17" unit can also use a bit more.
With these 20W a 60Wh battery would last for 3 hours. t = W/P = 60Wh/20W
The energy stored in the battery can be calculated as follows:
W = U * i* t for a 6-cell battery with 4400 mAh this would be 11.1V * 4.4Ah = 48,4 Wh
With the 20W of power consumption this battery would last about 2.5 hours.
If you wish to conserve battery life, the following tips might help you:
- Use the energy saving function in Windows found in the system controls und the power options
- Reduce the brightness of your screen since it consumes most of the power in a laptop.
- Turn off Wi-Fi or Bluetooth when it is not needed.
- Disconnect external devices like hard drives when not in use.
- Deactivated unnecessary tools or programs, that are running in the background.
All questions about Batteries
