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:  ivory
Dimension:  
Capacity:  4400mAh
Volt:  14.8V
Description:
 
Replace battery part number: 
GERICOM
442670000005 44267004002
442670060001 4428700400002
4CGR18650HG2 ICR-18650G

 
This battery is also compatible with the following models : 
ADVENT
7521    

EUROBOOK
A15 III IV
V    

IPC
MAGICNOTE MC 7521 POWERNOTE M 7321 STARNOTE M 15
STARNOTE M 25 STARNOTE M 7321 STARNOTE M 7524
STARNOTE MC 7321 STARNOTE MC 7521  

MITAC
7321 7322 7520
7521    

NATCOMP
@NOTE 7521 @NOTE I 1014 @NOTE I 1114
@NOTE I 1115 @NOTE I 1214 @NOTE PIII 3 866 7521

NETWORK
NBI-1014 NBI-7521 NBI-860 PREMIUM XL
NBI-866 PREMIUM XL    

VOBIS
HIGHPACK 1600 COMBO    

MEDION:
MAM3000 , MD5029 , MD7321 , MD7521 , MD9535 , MD9799

PACKARD BELL:
PACKARD BELL EasyNote 2800 , 3100 , 3102 , 3131 , 3138 , 3750
PACKARD BELL EasyOne Silver 2101 , 2120 , 2121 , 7321 , 7521

TARGA:
TARGA Visionary 1100 7321 7521 , Visionary P , Visionary P WW

VOBIS:
VOBIS HighPack XI 1200 Combo

XERON:
XERON Sonic Pro 700AX / MX , 750AX / TMX

YAKUMO:
YAKUMO 7521T , Q7-XD

LITTLEBIT:
LITTLEBIT 7521 , 7521 Plus , D51X , Jelly D52X 
 

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 ADVENT 442670060001 442870040002 7521 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.