PW640 laptop battery,DELL PW640 battery for WU841 KM742 DELL Latitude E5400 E5500 with 85wh is special

High quality DELL PW640 Batteries for WU841 KM742 DELL Latitude E5400 E5500 wholesale or retail in thelaptopbattery.co.uk, PW640 laptop battery is guaranteed to meet or exceed DELL original specifications, buy PW640 batteries get 30% off.

Specifications

Compatible Part Numbers:

WU841,MT186,MT187,MT193,MT196,MT332, P858D,PW651,PW640,PW649,KM742,KM752, KM760,KM769,KM970,RM656,RM661,RM668, RM680,T749D,U725H,U116D,W071D,WU841, WU843,WU852,X064D,X644H,Y568H,312-0762,

Compatible Model Numbers:

DELL Latitude E5400 series
DELL Latitude E5500 series

DELL PW640 laptop battery tips:

1.Carefulness read narrate book of battery,use commendatory battery.

2.New laptop battery pack must be fully charged before use.

3.New DELL PW640 battery needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity.

4.Rechargeable batteries undergo self-discharging when left unused. Always store a PW640 battery pack in a fully charged stage for storage.

5.Fully drain and fully recharge your battery pack every few month.

6.Li-ion and NiMH battery can not interchangeable.

7.Turn down the LCD brightness of your portable device.

8.Use built-in power management on your portable device.

9.Turn off LCD or other unnecessary accessories when not in use.

10.Set screen saver blank to 1 to 2 minutes of your DELL PW640 notebook.

11.It is normal to get warm when charging or normal use. If it is getting too hot, there may be a problem with the device and qualified personnel should check it.

12.Research the electric appliance and the DELL PW640 Batteries contact elements is whether clean, when necessity is clean with the wet cloth mop, after dry loads according to the correct polar direction.

13.PW640 laptop battery of DELL should stock in cool place, and dry.

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