For a new battery, we advise that you update the BIOS of your laptop, and open the hardware automatic identification port of your laptop.
When you use it firstly, you need to discharge till 5%, then charge it about 11 hours. Usually, new battery need to fully discharge and charge for three or four times, which can achieve the best performance.
About the new battery, please set the power management of your laptop: Property -> Screen Saver -> power -> Power scheme -> Portable / Laptop -> please cancel about low battery alarm and serious shortage of battery alarm when use the battery.
For some laptops, you could try to close your power management tool to test your new battery.
You could try to take out the battery from your laptop, and put it back again, repeat several times. Make sure that it isn't a poor contact problem between the battery and your laptop.
If the battery works in higher temperature, the battery protection plate will work and the laptop restart program will make a termination order. You can take out the battery, put it back again, and avoid work in high temperature.
In order to avoid some damage to the battery, please note:
Please don't take out the battery when the laptop is in run status.
Please don't pull out the ac adapter frequently when the battery is charging.
Please use high quality and reliable laptop charger, not to use the universal laptop charger.
Are there something wrong with the new battery can not charging?
That's not usually the case. When equipment for the first time to recharge the battery, the instability of the voltage and current may cause the battery charge to 50% (sometimes more, sometimes less), and equipment stop charging the battery.
If this happens,don't worry. You just remove the battey from the equipment, recharge again. First charging a new battery may need several repeated process. Please be assured that this is normal.
Many people have reflected that Dell's notebook haven't recognised and charged the new battery problem. Usually, they solve this problem via BIOS refreshed.
Usually, please connect the battert with the power supply when you can refresh the BIOS. You can download the BIOS program from Dell support website http://search.dell.com/results.aspx?s=gen&c=us&l=en&cs=&k=dell+bios+inspiron+6400&cat=sup,
automatically installed and automatically restart till to complete. Of course, you could check its use manual in advance.
Or you can visit http://www.batteriescenter.com.au/.