Dell inspiron 640m battery- Product information

1. 100% new high quality Dell Battery Replacement Compatible laptops.

2. This Dell inspiron 640m Laptop Battery can be used for the other models and adapter part No.

3. 30-Day Money Back, full 1 Year Warranty for every Laptop battery.

4. Great After-sales Service Department for Laptop Batteries, fast responds to your request!

5. Fast delivery via USPS if you order the Dell Laptop Battery.

6. Need any assistance on Dell battery, please feel free to email us!

We provide premium quality compatible laptop batteries, manufactured by state-of-the-art manufacturing plants in conformance with quality standards and guidelines applicable to OEM battery packs. Each Dell inspiron 640m battery is tested throughout the manufacturing process to match or outperform the original equipments specifications for form, fit and workmanship.

How can I maximize the discharge time of the Dell inspiron 640m battery?

The discharge time will vary by different user. It depends on the features you are using in your notebook PC during the time you are using the Dell inspiron 640m battery. For example, if you are playing a movie from DVD and you are connected to a wireless network, your battery life will be shorter than normal. If you are just reading or editing a file or answering email on a wired network connection, you will experience maximum Dell inspiron 640m battery life. Please note that your maximum discharge time will be shortened as the storage capacity decays.

Tips for maximizing discharge time:

*Lower the brightness on the display.
*Check the Power Management settings are set to "Max Dell inspiron 640m battery ".
*Remove the battery from the notebook PC when it is not being used or charged for a long period
*Purchase another battery to extend the overall operating time on battery.
*Store the battery in a cool dry location.

Will the Dell inspiron 640m battery performance degrade over time?

The storage capacity of a notebook PC Dell inspiron 640m battery will degrade over time based upon notebook usage. Degradation is a normal condition of all rechargeable Dell inspiron 640m laptop battery and is not limited to notebook PCs or other products. If the notebook is used on Dell inspiron 640m battery power often, requiring one or more recharges per day, the battery will experience a high degree of degradation and will need to be replaced sooner than a battery that is used occasionally. Also, temperature and humidity impact the storage capacity of a battery for Dell inspiron 640m . It is best to store the battery and notebook in a cool dry place.

Under normal operating conditions, a battery can perform well for over a year, but it will hold less of a charge every time it is recharged. The Battery Check utility validates that every battery is operating normally by checking the condition of the cells of the Dell inspiron 640m laptop battery. The Health status will change to " Replace " if the cells are not functioning normally.
NOTE: As with all Dell inspiron 640m battery, the maximum capacity of this battery will decrease with time or use. Loss of battery capacity will vary depending on the product configuration and usage, including but not limited to: product model, applications running, power management settings, and product features. The battery warranty does not cover natural deterioration of battery capacity. Your battery is only warranted from defects in materials or workmanship resulting in failure, to determine if your battery has had a warranted failure you may be required to run an Dell diagnostic.

Precautions when using a Dell inspiron 640m battery

1. Do not modify or disassemble it.
2. Do not incinerate or expose to excessive heat, which may cause an exposure.
3. Do not expose it to water or other moist/wet substances.
4. Avoid piercing, hitting, crushing or any abuse use of the Laptop Battery.
5. Do not forget to take away your battery from the device if you will not use it for a long time.
6. Avoid short circuit of the terminals by keeping your Dell inspiron 640m battery pack away from metal objects such as necklaces or hairpins.

Dell inspiron 640m Laptop Battery Articles & Tips

A new Dell Laptop Battery comes in a discharged condition and must be charged before use (refer to the devices manual for charging instructions). Upon initial use (or after a prolonged storage period) the laptop Dell inspiron 640m battery may require three to four charge/discharge cycles before achieving maximum capacity. New Dell Laptop Battery needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity. Rechargeable batteries undergo self-discharging when left unused. Always store a Laptop Battery pack in a fully charged staged for storage. When charging the Dell inspiron 640m battery for the first time the device may indicate that charging is complete after just 10 or 15 minutes. This is a normal phenomenon with rechargeable batteries. Remove the laptop batteries from the device, reinsert it and repeat the charging procedure

It is important to condition (fully discharge and then fully charge) the Dell inspiron 640m battery every two to three weeks. Failure to do so may significantly shorten the battery's life (this does not apply to Li-ion batteries, which do not require conditioning). To discharge, simply run the device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in the user's manual. If the battery will not be in use for a month or longer, it is recommended that Dell inspiron 640m battery be removed from the device and stored in a cool, dry, clean place.

Be sure to store your Laptop Battery properly. Do not leave your batteries in a hot car, or in humid conditions. The best storage conditions are a cool, dry place. The refrigerator is fine if you stick in a packet of silica gel with your Dell inspiron 640m laptop battery in a sealed bag to keep them dry. It is a good idea to charge your NiCad or Ni-MH batteries fully before use if they have been in storage.