Replacement Dell D620 Lithium ion Laptop Battery
4400mAh High Quality PC7640 Dell Laptop Battery
- Product Brand:
- Dell PC7640 battery
- Chemistry:
- Li-ion
- Volt:
- 11.1V
- Capacity:
- 4400mAh
- Dimension:
- 312*105*45.0mm
- Net Weight:
- 390.0g
- Color:
- Black
- Price:
- $ 72.54
-
Related: Laptop Adapter
Dell PC764 battery charger
Input : AC 100-240/ DC 11-16V
Output : 19.5V
Price: $40.00
Replacement Dell PC7640 Laptop Battery
6600mAh High Quality Rechargeable PC7640 Dell Laptop Battery
- Product Brand:
- Dell Laptop Battery
- Chemistry:
- Li-ion
- Volt:
- 11.1V
- Capacity:
- 6600mAh
- Dimension:
- 312*105*45.0mm
- Net Weight:
- 666.0g
- Color:
- Black
- Price:
- $ 77.08
-
Dell d620 battery,rechargeable dell PC7640 battery description:
PC7640 dell batteries are specifically designed for
Dell laptop. We offers a complete line of dell batteries and compatible replacements for most laptop models,Our replacement
dell PC7640 batteries are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All dell PC7640 notebook batteries are tested for 100% quality control assurance. These batteries includes a one year warranty. You can count on our batteries! We offer a 30 day unconditional money back guarante and fast shipping on all of our
dell batteries.
Dell PC7640 battery Detail:
- New dell PC7640 batteries are shipped in a discharged condition and must be charged before use. We
generally recommend an overnight charge (approximately twelve hours). Refer to the user's manual
for charging instructions. Rechargeable dell PC7640 batteries should be cycled - fully charged and then fully
discharged - two to four times initially to allow them to reach their full capacity.
- Try to avoid frequent full discharging of the dell d620 battery.
- It is normal to get warm when charging or normal use the dell PC7640 battery. If it is getting too hot, there may be a
problem with the device and qualified personnel should check it.
- If you don't plan on using the replacement PC7640 dell battery for a month or more, we recommend storing it in a clean,
dry, cool place away from heat and metal objects.
- To get maximum performance from the dell d620 battery, fully optimize the notebooks power management
features prior to use. Power management is a trade off: better power conservation in exchange for
lesser computer performance. The power management system conserves battery power by setting the
processor to run at a slower speed, dimming the screen, spinning down the hard drive when it's
not in use and causing the machine to go into sleep mode when inactive. The notebook users guide
will provide information relating to specific power management features.
Dell PC764 Battery Adapter
-
- $ 40.00
Dell d620 battery replacement battery code:
:312-0393,312-0394,312-0401,312-0402,451-10308,451-10309,451-10326,451-10327
PC7640 replacement laptop battery fit model
Dell d620 battery , dell latitude d630 battery
Dell d620 battery problem and FAQ
What causes short lifetime of the dell PC7640 battery? How to prolong the lifetime of battery?
1)Reason:
a.Charger or electro circuit can't be fit for the battery.
b.Overcharge and overdischarge, etc.
c.Battery can't comply with the charging requirement
2)Solution:
a.Use the original charger.
b.Charge the battery after it automatically powers off , then full charge the battery.
c.Avoid erroneous usage of battery, such as heavy pressure, short circuit, fall off and so on.
Why can't the dell PC7640 battery be charged? How to solve this problem?
1)Reason:
a.The battery has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with battery.
c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)
What's the reason that causes the dell PC7640 battery with no voltage or low voltage? How to avoid this problem?
1)Reason:
a.No voltage.
b.External shot circuit or overcharge, anti-charge
c.Cells expansion and short circuit caused by direct anode contact and continuous high efficiency electric current overcharging.
2)Solutions:
a.Check if the battery is without voltage or electric current.
b.Avoid short circuit.
c.Avoid collision and pressure among batteries.
d.Charge the battery after it automatically powers off , then full charge the battery.
