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: black
Dimension: 136.48 x 75.08 x 19.88 mm
Capacity: 4400mAh
Volt: 11.1V

Replace battery part number:

90-NQK1B1000Y, 7430020000, 7432520000, 7414750000, CBI2095A
S/N 100699920327, MS MODEL AD 101 IN0034, 70-NLF1B2000Z, 70-NLF1B2000Y
A31-T12, A32-T12, A32-X51, A32-XT12, A32-T12J, A31-X51, A31-X58, P/N PB64HWD202

This battery is also compatible with the following models :

Asus

Asus X51 Series
Asus X51H Asus X51L Asus X51R Asus X51RL
Asus X58L
Asus T12 Asus T12C Asus T12Er Asus T12Fg
Asus T12Jg Asus T12Mg Asus T12Ug

Packard Bell EasyNote MX Series
EasyNote MX35 SERIES EasyNote MX36 SERIES EasyNote MX37 SERIES
EasyNote MX45 SERIES EasyNote MX51 SERIES EasyNote MX52 SEREIS
EasyNote MX52-B-036 EasyNote MX52-B-057 EasyNote MX52-B-049
EasyNote MX52-B-032 EasyNote MX52-B-120 EasyNote MX52-B-107
EasyNote MX61 SEREIS EasyNote MX65 SEREIS EasyNote MX65-042 SERIES
EasyNote MX66 SERIES EasyNote MX66-207 Series EasyNote MX67 Series
EasyNote MX67-O-006 EasyNote MX67-P-004D EasyNote MX67-P-005
EasyNote MX67-P-072 EasyNote MX67-P-050 EasyNote MX67-O-027
EasyNote MX67-P-037 EasyNote MX67-P-071 EasyNote MX67-P-013
EasyNote MX67-O-043 EasyNote MX67-P-026 EasyNote MX67-P-007
EasyNote MX67-P-068 EasyNote MX67-P-084 EasyNote MX67-P-052
EasyNote MX67-P-040

Packard Bell EasyNote Alpha Series
EasyNote ALP-AJAX A EasyNote ALP-AJAX C2 EasyNote ALP-AJAX C3
EasyNote ALP-AJAX GDC EasyNote ALP-AJAX GN EasyNote ALP-AJAX GN3

Asus Pro52 Series
Pro52H-AP001C Pro52H-AP003C Pro52H-AP005C
Pro52L-AP047C Pro52L-AP048C Pro52L-AP053C
Pro52L-AP102A Pro52L-AP111A Pro52L-AP125E
Pro52RL-AP021C Pro52RL-AP047C Pro52RL-AP173C
Pro52L-AP138L Pro52Sn

Medion Akoya P5510 MD96679

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 ASUS X50 X51 X51R X51H A32-t12 A32-X51 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.