Please ensure the product(s) that you are going to buy fits the brand, model and part number of your device.

Specifications:

Battery Type: Li-ion
Color:  silver
Dimension:  
Capacity:  4000mAh
Volt:  14.8 V
Replace battery part number: 
442673400015
40004852
40004852 (PS)
40004852(PS)
442673400003
442673400004
442673400008
442673400016
442673400027
442673400028
442673400029
442674600002
442679900001
442679900002
442679900003
442679900004
442679900007
442680700001
821561
CGR-B/T19SE-MSL
NBP001310-00
4426746100001
7004690000
7022560000
 
This battery is also compatible with the following models : 
Packard Bell
Packard Bell Easy Note K3 Series Packard Bell Easy Note K5 Series
Packard Bell Easy Note K5266 K5280 K5283 K5285 K5300 K5303 K5305 K5542 Series,
iPower 5000 5000I 5000II Series, iPower 5254 5264 5305 5541 Series
iPower 5542 5624 MIT-CAI01, 5642 Series;

Mitac
Mitac 8640 Series, Mitac MiNote 8630 , Mitac MiNote 8640 ,
Mitac MiNote 8640D Series, Mitac MiNote 8650G , Mitac MiNote 8640D4,
Mitac MiNote 8640G4, Mitac MiNote 8640M4, Mitac MiNote 8640P4,
Mitac MiNote 8640DH Mitac MiNote 8640GH, Mitac MiNote 8640HC,
Mitac MiNote 8640L , Mitac MiNote 8640M , Mitac MiNote 8640P,
Mitac MiNote 8640MP Mitac MiNote 8640S , Mitac MiNote 8640SC,
Mitac MiNote 8640SH Mitac MiNote M8640 Series,

LION
Sarasota 8640 8640C 8640D 8640DH 8640DM Series,
Sarasota 8640HC 8640M4 8640S 8640SC Series,
Artworker 8640 Series,

WinBook
winbook M100 M200 M300 M400 Series,
IPCWeb@Note 8640D, 8640M Series,

HYPERDATA
8640D 8640D4 8640DH 8640SH Series,

HIGHLANDER
HL-86 HL-86/8640 Series,
Gericom/AJP 8640 Series,

Advent
Advent 7019 Series Advent 7035 Series Advent 7048 Series

Medion
MD9760 MD40632 MD40675 MD40681
MD40774 MD40775 MD40777 MD40780
MD40901 MD41039 MD41050 MD41054
MD41060 MD41063 MD41100 MD41131
MD41200 MD41272 MD41273 MD41274
MD41634 MD41653 MD41983 MD42193
MD42262 MD42413 MD42414 MD42416
MD51054

Gericom : 8640, 1st Supersonic ForceXL 8640, Supersonic Force XL

IPC : Impact-Line 8640, Impact-Line 8640GH,
Web @Note 8640, Web @Note 8640M

ISSAM : SmartBook i-8640,
SmartBook i-8640C, SmartBook i-8640D/M, SmartBook 8640L/S

laptop batteries have two main ratings on them: Volts and Amperes. Because size and weight of laptop batteries is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Milliamperes. One thousand Milliamperes equals 1 Ampere. When buying a battery, select batteries with the most Milliamperes (or mAh). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:

14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).

14.4 x 4.0 = 57.60 Watt-Hours

Watt-Hours signifies the energy needed to power one watt for one hour. This laptop battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this laptop battery could power your laptop for 2.8 hours.

There are several steps you can take to help you get maximum performance from your laptop battery:

Prevent the Memory Effect - Keep the laptop battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the memory effect.

Keep the laptop Batteries Clean - It’s a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device.

Exercise the Battery - Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a laptop battery has not been used for a long period of time, perform the new battery break in procedure described above.

Battery Storage - If you don’t plan on using the laptop battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. NiCad, NiMH and Li-Ion batteries will self-discharge during storage; remember to recharge the batteries before use.

Upgrade my Winbook M100 M200 M300 M400 Artworker 8640 battery from NiMH to Li-Ion

NiCad, NiMH and Li-Ion laptop batteries are all fundamentally different from one another and cannot be substituted unless the laptop has been pre-configured from the manufacturer to accept more than one type of battery chemistry. Please refer to your manual to find out which rechargeable battery types the laptop device supports or use our Battery Finder above to find all the compatible laptop batteries for your device. It will automatically list all of the battery chemistries supported by your specific device. If your device does allow you to upgrade the battery from NiMH to Li-Ion, you will typically get longer run times.

For example, if your laptop uses a NI-MH battery that is 9.6 Volts, 4000mAh and the new li-ion laptop battery is 14.4 Volt, 3600mAh, then you will obtain longer run time with the li-ion battery.

Example.

Li-Ion: 14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
Ni-MH: 9.6 Volts x 4 Amperes = 38.4 Watt Hours
The Li-Ion is stronger and has longer run time.