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: 270.8 x 43.3 x 20.9(mm)
Capacity: 5200mah
Volt: 11.1V

Replace battery part number:

AS09D31 AS09D34
AS09D36 AS09D56
AS09D70 AS09F34

This battery is also compatible with the following models :
ACER
As3810T
AS3810T-352G08nb
AS3810T-352G32na
AS3810T-354G32n
AS3810T-6197
As3810T-6415
AS3810T-6775
AS3810T-8097
AS3810T-8503
As3810T-8640
AS3810T-942G32nc
AS3810T-944G32n
AS3810T-H22
AS3810T-H22F
AS3810T-S22
AS3810T-S22F
AS3810TG-352G32n
AS3810TG-354G32N
AS3810TG-732G50n
AS3810TG-944G50n
AS3810TZ-4009
As3810TZ-4880
AS3810TZG-412G50

As4810-4439
As4810T
AS4810T-352G32Mn
AS4810T-353G25Mn
AS4810T-6937
As4810T-8480
As4810T-8702
AS4810T-8741
AS4810T-943G32Mn
AS4810TG-352G32Mnc
AS4810TG-352G50Mnd
AS4810TG-732G50Mn
AS4810TG-942G32Mnb
AS4810TG-943G32MN
AS4810TG-R23
AS4810TG-R23F
As4810TZ-4011
AS4810TZ-4473
As4810TZ-4696
AS4810TZG-412G50Mn
As5810T
AS5810T-354G32Mn
AS5810T-6455
As5810T-8929
As5810T-8952
AS5810T-8982
AS5810T-944G32Mn
AS5810T-D34
AS5810T-D34F
AS5810TG-352G32Mn
AS5810TG-352G50Mna
AS5810TG-354G32MN
AS5810TG-944G50MN
AS5810TG-D45
AS5810TG-D45F
As5810TZ-4112
As5810TZ-4238
As5810TZ-4274
AS5810TZ-4447
As5810TZ-4657

Acer Aspire 3810 Timeline Series
Aspire 3810T-352G08nb
Aspire 3810T-352G32na
Aspire 3810T-354G32n
Aspire 3810T-6197
Aspire 3810T-6415
Aspire 3810T-6775
Aspire 3810T-8097
Aspire 3810T-8503
Aspire 3810T-8640
Aspire 3810T-942G32nc
Aspire 3810T-944G32n
Aspire 3810T-H22
Aspire 3810T-H22F
Aspire 3810T-S22
Aspire 3810T-S22F
Aspire 3810TG-352G32n
Aspire 3810TG-354G32N
Aspire 3810TG-732G50n
Aspire 3810TG-944G50n
Aspire 3810TZ-4009
Aspire 3810TZ-4880
Aspire 3810TZG-412G50

Acer Aspire 4810 Timeline Series
Aspire 4810-4439
Aspire 4810T-352G32Mn
Aspire 4810T-353G25Mn
Aspire 4810T-6937
Aspire 4810T-8480
Aspire 4810T-8702
Aspire 4810T-8741
Aspire 4810T-943G32Mn
Aspire 4810TG-352G32Mnc
Aspire 4810TG-352G50Mnd
Aspire 4810TG-732G50Mn
Aspire 4810TG-942G32Mnb
Aspire 4810TG-943G32MN
Aspire 4810TG-R23
Aspire 4810TG-R23F
Aspire 4810TZ-4011
Aspire 4810TZ-4473
Aspire 4810TZ-4696
Aspire 4810TZG-412G50Mn

Acer Aspire 5810 Timeline Series
Aspire 5810T-354G32Mn
Aspire 5810T-6455
Aspire 5810T-8929
Aspire 5810T-8952
Aspire 5810T-8982
Aspire 5810T-944G32Mn
Aspire 5810T-D34
Aspire 5810T-D34F
Aspire 5810TG-352G50Mna
Aspire 5810TG-354G32MN
Aspire 5810TG-944G50MN
Aspire 5810TG-D45
Aspire 5810TG-D45F
Aspire 5810TZ-4112
Aspire 5810TZ-4238
Aspire 5810TZ-4274
Aspire 5810TZ-4447
Aspire 5810TZ-4657
Acer Aspire 810TG-352G32Mn
TM8371-352G32n
TM8371-353G25n
TM8371-733G32n
TM8371-944G08n
TM8371-944G32 N
TM8371-944G50n
TM8471-353G25MN
TM8471-733G25Mn
TM8471-944G32Mn
TM8471-944G50Mn
TM8571-352G25Mn
TM8571-353G25MN
TM8571-733G25Mn
TM8571-943G25MN
TM8571-944G32Mn

TravelMate 8371-352G32n
TravelMate 8371-353G25n
TravelMate 8371-944G08n
TravelMate 8471-353G25Mn
TravelMate 8471-944G32Mn
TravelMate 8571-353G25Mn
TravelMate 8571-944G32Mn
TravelMate Timeline 8371-353G25n
TravelMate Timeline 8371-733G32n
TravelMate Timeline 8371-944G50n
TravelMate Timeline 8471-353G25MN
TravelMate Timeline 8471-733G25Mn
TravelMate Timeline 8471-944G32Mn
TravelMate Timeline 8471-944G50Mn
TravelMate Timeline 8571-352G25Mn
TravelMate Timeline 8571-353G25MN
TravelMate Timeline 8571-733G25Mn
TravelMate Timeline 8571-943G25MN
TravelMate Timeline 8571-944G32Mn

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 AS09D34 Acer Aspire Timeline 3810 4810T 4810 5810 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.