Each filling-emptying cycle (or use) of compaq evo battery will reduce performance

You have to understand that no matter how well you care about your laptop battery will lose performance and one day die. Of course, his exploits will slow down the aging process of the battery. In warmer environments, while the laptop is used and the battery becomes hot, the battery will drain energy faster. For this reason, the number one rule is: Keep your cool laptop. Try to keep the battery at room temperature. But do not let the battery in a freezer or refrigerator. That will make the compaq evo battery useless.

The second most important point is, every fill-void cycle (or use) battery performance is reduced. Of course, this is not surprising. However, according to the time compared to the first use, you'll be surprised.

When users continually keep the battery set and battery connected to the electricity is still loading and unloading process. If you use a fully charged battery in the laptop previously hot work, it will download faster than normal. Once the predicted load level falls (is different for each company) to provide laptop battery power, AC adapter is full of additional electricity. laptop battery for growing old, self-discharge is connected and depending on use, will gradually increase.

Normally lithium-ion battery will hold a 6-800 load / discharge cycle. This means that life between 1.5 and 3 years. As described above, when using your laptop battery, refill the source (AC adapter) will remain unnecessarily covered.

As a side note, most laptop users think it's better to fully charge the battery after fully met. But this case is nickel-cadmium (Ni-Cd) battery method. Today's batteries have different chemical reactions and have different characteristics.

The best method of charging when the battery is lithium ion occupancy rate is between 10% and 20% of that is the best time to refill in a healthy way to lower their ability to reduce. To charge the battery when it is completely empty, it is an ancient method and a mistaken belief. Windows operating system warn you connect the adapter when the best time to charge the battery (10%, 20% etc.).
Some tips for using the dell inspiron 9400 battery:

1 - new laptop batteries are usually offered empty. The first has to be filled as long as possible (minimum 4 hours) and do not use the battery fully charged before.

2 If you can remain calm in the battery, keep it. But that does not put in the freezer or something.

3 Do not plug the battery when connected via an adapter.

4 Do not wait for the battery is completely empty to reload, this method was for the older type batteries.

5 If you have not used the battery for a time, not try to load completely, it at least in their employment rate is 10%.

6 If you buy a battery, not wait for your battery to die, because of its battery backup is also going to die when expected.