What quick settings can extend laptop battery life?

Enable Battery Saver/Power Saver, reduce screen brightness, close unused apps/tabs, turn off Wi-Fi/Bluetooth when not needed, and avoid heat buildup by keeping vents clear.

Will this battery work with my Acer AS09C31?

If your laptop is a Acer AS09C31, this battery is intended to be compatible. Please also compare your original battery’s part number and voltage with the product details on this page to confirm before ordering.

Is this battery compatible with the AS09C31?

Yes. This battery is designed for the Acer AS09C31 and other compatible laptop models listed on the product page. Confirm your exact model before purchase.

What does 4400mAh / 49Wh mean for battery life?

The capacity (4400mAh / 49Wh) indicates how much energy the battery can store. Higher capacity typically means longer runtime, but actual battery life depends on your laptop settings and usage.

What kind of cells are inside this laptop battery?

This battery uses Conventional Li-ion cells, commonly used in laptop batteries for stable power delivery and reliability.

Is this an original Acer battery?

This is a high-quality replacement battery built to meet the required specifications for Acer laptops such as the AS09C31.

Gateway NV44 NV4405h NV4404h NV4400c NV4403h NV40 NV42 NV48 NV4000 NV4200 NV4400 NV4800 NV5200 Series Acer Extensa 5235 5635 5235G 5235Z 5635G 5635Z 5635ZG Series Laptop Battery AS09C31 AS09C71 AS09C75 [11.1V] Compatible Battery

AS09C31 Battery for Gateway NV44 NV40 NV42 NV48 NV4000 NV4200 NV4400 NV4800 NV5200 Series Acer Extensa 5235 5635 5235G 5235Z 5635G 5635Z 5635ZG Series eMachines E528 Series Laptop AS09C71 AS09C75 [11.1V] Compatible Battery

$53.00 CAD

~~$73.00 CAD~~ Sale $53.00 CAD

Minimum Qty	Discount
Buy 5 +	Price with 10% off: $47.70
Buy 10 +	Price with 20% off: $42.40

Discount will be applied at Checkout page

Product variants

Product Info

Type Laptop Battery
SKU LGT218-db-001
Compatible Brand Acer
Capacity 4400mAh / 49Wh
Cell Type Conventional Li-ion
Shipping Free Shipping

COMPATIBLE LAPTOP MODELS

Acer Extensa 5235 Series:

5235-301G16Mn | 5235-904G16Mn and more

Acer Extensa 5235G Series

Acer Extensa 5235Z Series:

5235Z-432G16Mn | 5235Z-901G16Mn and more

Acer Extensa 5635 Series:

5635-5b2G16n | 5635-6011 | 5635-652G25n | 5635-654G25Mn | 5635-654G64Mn | 5635-662G32Mn | 5635-676 | 5635-6897 and more

Acer Extensa 5635G Series:

5635G-654G32 | 5635G-662G25Mi | 5635G-664G25Mn and more

Acer Extensa 5635Z Series:

5635Z-4224 | 5635Z-422G16Mn | 5635Z-422G25Mn | 5635Z-432G16Mn | 5635Z-432G25Mn | 5635Z-433G25N | 5635Z-434G32N | 5635Z-444G32N | 5635Z-4686 and more

Acer Extensa 5635ZG Series:

5635ZG-422G25Mn | 5635ZG-423G32n | 5635ZG-432G25Mi | 5635ZG-432G25Mn | 5635ZG-434G50Mi and more

Gateway NV40 Series

Gateway NV4000 Series:

NV4000c | NV4001 | NV4001c | NV4002c | NV4005c | NV4005v | NV4006c | NV4010c | NV4011c | NV4013c | NV4014c and more

Gateway NV42 Series

Gateway NV4200 Series:

NV4200c | NV4201 | NV4201c | NV4201E | NV4201i | NV4201M | NV4201u | NV4201v | NV4202 | NV4202c | NV4202E | NV4202i | NV4203 | NV4203c | NV4204 | NV4204c | NV4204E and more

Gateway NV44 Series

Gateway NV4400 Series:

NV4400c | NV4401 | NV4401c | NV4401h | NV4402 | NV4402c | NV4402h | NV4403c | NV4403h | NV4404h | NV4405c | NV4405h | NV4406 | NV4406c | NV4410c | NV4413c | NV4414c | NV4425c | NV4426c | NV4427c | NV4428c | NV4429c | NV4430c and more

Gateway NV48 Series

Gateway NV4800 Series:

NV4800c | NV4801e | NV4802e | NV4803c | NV4804g | NV4808c | NV4809c | NV4810c | NV4811c | NV4815C and more

Gateway NV5200 Series:

NV5202C | NV5203C | NV5205C and more

eMachines E528 Series

COMPATIBLE ORIGINAL PART NUMBERS

AS09C31 | AS09C71 | AS09C75 | AS09C70 | BT.00603.078 | BT.00603.093 | BT.00607.072 | BT.00607.073

REMARKS

Please confirm your laptop model and battery number before placing an order.

Compatible Brand: Acer

🔋 See More Acer Compatible Laptop Batteries ⚡ See More Acer Compatible Laptop Adapters

Laptop Battery FAQs How To Find The Correct Battery?

How do I know if a laptop battery will fit my device?

The most reliable method is matching the part number printed on your original battery. Also confirm the voltage and compare the battery shape and connector position with the product photos and specifications.

Where can I find the battery part number?

Shut down the laptop, unplug the power adapter, remove the battery if it is removable, and read the label printed directly on the battery. This part number is the best way to confirm compatibility.

Are different battery voltages interchangeable?

No. You must match the voltage shown on your original battery. Note that 10.8V equals 11.1V, and 14.4V equals 14.8V, but other voltage differences are not compatible.

What should I compare before ordering a replacement battery online?

Compare the original battery’s part number and voltage first, then check the size and shape, connector type and location, latch position, and orientation against the product photos and specifications.

Can I use my laptop model number instead of the battery part number?

You can use the laptop model number to narrow down options, but the battery part number is more precise. A single laptop model can support multiple battery types, so matching the printed battery part number is best.

What quick settings can help extend laptop battery life?

Enable Battery Saver or Power Saver mode, reduce screen brightness, close unused apps and browser tabs, turn off Wi-Fi or Bluetooth when not needed, and avoid heat by keeping the laptop vents clear.

Choosing the correct replacement battery or adapter is critical for safety, performance, and compatibility. DrBattery.com carries over 120,000 compatible models and part numbers for major laptop brands. Follow these steps before placing your order:

1. Check Your Device Information

Look at your device’s owner’s manual or label on the bottom of your laptop. Both should show the brand and exact model number.
If you are buying an adapter, confirm the model number, input voltage, and current listed on your device label.

2. Verify the Original Battery Part Number

Always shut down your laptop before removing the original battery. On the battery label, you will find a part number. This part number is the most reliable way to ensure compatibility.

3. Recognize Common Part Number Formats

Major manufacturers use standard codes. Here are some examples:

HP / Compaq:
123456-001

Sony:
PCGA-BP12, VGP-BP1

Dell:
312-1234, 1234P

IBM / Lenovo:
02K1234, 08K1234

Toshiba:
PA1234U-1BRS

4. Compare the Physical Details

Check the size, connector type, latch position, and orientation of your original battery. Compare these details with the product photos on our website before ordering.

5. Watch Out for Voltage Differences

Some models have two different voltage options — for example, 11.1V vs. 14.8V. They are NOT interchangeable. Always confirm the voltage printed on your original battery.