How do I find the correct laptop battery for my device?

Check your laptop’s owner’s manual or the label on the bottom of your device for the brand and exact model number. Then verify the part number printed on your original battery to ensure compatibility.

Where is the battery part number located?

Shut down your laptop, remove the battery, and read the label printed directly on the battery. That part number is the most reliable way to confirm compatibility.

Are different battery voltages interchangeable?

No. A battery rated 11.1V is not compatible with one rated 14.8V. Always match the voltage on your original battery. Note: 10.8V equals 11.1V, and 14.4V equals 14.8V.

What should I compare before ordering a replacement battery?

Compare the size, connector type, latch position, and orientation of your original battery with the product photos and specifications on DrBattery.com.

Can I use device model numbers instead of part numbers?

You can, but battery part numbers are more precise. A single device model can support multiple battery types, so confirming with the battery’s printed part number is best.

42T4957 42T4961 Battery for Lenovo Edge E120 E125 E130 E145 E320 E325 E330 E335 Lenovo ThinkPad X121e X130e X131e X140e Series Laptop 0A36292 45N1176 42T4958 42T4947 45N1174 [11.1V] Compatible Battery

42T4957 42T4961 Battery for Lenovo Edge E120 E125 E130 E145 E320 E325 E330 E335 Lenovo ThinkPad X121e X130e X131e X140e Series Laptop 0A36292 45N1176 42T4958 42T4947 45N1174 [11.1V] Compatible Battery

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Product variants

Product Info

Type Laptop Battery
SKU LLN244-db-003
Capacity 4400mAh / 49Wh
Cell Type Conventional Li-ion
Warranty 1 Year
Shipping Free Shipping

Description
Specification

COMPATIBLE LAPTOP MODELS

Lenovo Edge:

E130 NZUAXMB

Lenovo Thinkpad:

3354-ATG | 3354-AVG | 3354-DSG | 3358 | E120 | E120 30434NC | E120 30434SC | E120 30434TC | E125 | E145(20BC000ACD) | E145(20BC000BCD) | E145(20BC000CCD) | E145(20BC000GCD) | E145(20BC000HCD) | E145(20BC000JCD) | E145(20BCA01HCD) | E145(20BCA01RCD) | E145(20BCA01SCD) | E320 | E325 | E330 22555003 | E335

Lenovo Thinkpad Edge:

E120 Series | E125 Series | E130 Series | E145 | E320 | E320 Series | E325 | E325 Series | E330 | E330 3354 | E330 3354-4NG | E330 3354-4PG | E330 3354-4QG | E330 3354-4RG | E330 3354-4SG | E330 3354-93G | E330 3354-94G | E330 3354-95G | E330 3354-96G | E330 3354-9QG | E330 3354-9RG | E330 3354-AHG | E330 3354-ALG | E330 3354-AMG | E330 3354-ANG | E330 3354-APG | E330 3354-AQG | E330 3354-ARG | E330 3354-ASG | E330 3354-ATG | E330 3354-AUG | E330 3354-AVG | E330 3354-BFG | E330 3354-BJG | E330 3354-BKG | E330 3354-BMG | E330 3354-BNG | E330 3354-CQG | E330 3354-CRG | E330 3354-CSG | E330 3354-DSG | E330 3354-DTG | E330 3354-DUG | E330 3354-DVG | E330 3354-DWG | E330 3354-DXG | E330 3354-DYG | E330 3354-DZG | E330 3354-E8G | E330 3354-E9G | E335 | E335 3355 | E335 3355-5YG | E335 3355-5ZG | E335 3355-62G | E335 3355-63G | E335 3355-64G | E335 3355-65G | E335 3355-66G | E335 3355-67G | E335 3355-68G | E335 3355-69G | E335 3355-6AG | E335 3355-6YG | E335 3355-6ZG | E335 3355-72G

Lenovo Thinkpad X121e:

3045 | 3048 | 3049 | 3051 | 3053 | 3055 | Series | 3045-563M | 3045-5CTO | 3048-82LM | 3048-82MM | 3048-8CTO

Lenovo ThinkPad X130e:

0622 | 0627 | 0629 | 2338 | 2339 | 2340 | 3368

Lenovo ThinkPad X131e:

3367 | 3367-8EU | 3367-8FU | 3367-8GU | 3367-8HU | 3367-98G | 3367-98U | 3367-99U | 3367-9AU | 3367-9BU | 3367-9CU | 3367-9DU | 3367-9EU | 3367-9FU | 3367-9GU | 3368 | 3368-2NG | 3368-3LU | 3368-3MU | 3368-3NU | 3368-3PU | 3368-3XG | 3368-3YG | 3368-3ZG | 3368-42G | 3368-44U | 3368-46U | 3368-48U | 3368-4FU | 3368-4HU | 3368-4MU | 3368-4QU | 3368-4RU | 3368-4SU | 3368-4UU | 3368-53U | 3368-55U | 3368-5AU | 3371 | 3371-2HU | 3371-2JU | 3371-2KU | 3371-2LU | 3371-2MU | 3371-2NU | 3371-2PU | 3371-2RU | 3371-7JU | 3371-7KU | 3371-7LU | 3371-7MU | 3371-7NU | 3371-7PU | 3371-7QU | 3371-7RU | 3371-86U | 3371-87U | 3371-88U | 3371-89U | 3371-8AU | 3371-8BU | 3371-8CU | 3371-8DU | 3371-8EU | 3371-8HG | 3372 | 3372-29U | 3372-2AU | 3372-2BU | 3372-2CU | 3372-2DU | 3372-2EU | 3372-2FU | 3372-2GU | 3372-2JU | 3372-2KG | 3372-2MU | 3372-2NU | 3372-2PU | 3372-2QU | 3372-2RU | 3372-2SU | 3372-2TU | 3372-2UU | 3372-2VU | 3372-2WU | 3372-2XU | 3372-2YU | 3372-2ZU | 3372-32U | 3372-3FU | 3372-3GU | 3372-3HU | 3372-3JU | 3372-3KU | 3372-3LU | 3372-3MU | 3372-3NU | 3372-3PU | 3372-3QU |(3367-71Q1) |(3367-71S4) |(3367-71V7) |(3367-72A9) |(3367-72B8) |(3367-72C1) |(3367-72E7) |(3367-72F3) |(3367-72G0) |(3367-72H6) |(3367-72J0) |(3367-72K5) |(3367-72L0) |(3367-72N0) |(3367-72N1) |(3367-72RM) |(3367-72SM) |(3367-72W0) |(3367-72W1) |(3367-73AU) |(3367-73TM) |(3367-73UM) |(3367-73VM) |(3367-73WM) |(3367-762U) |(3367-78AU) |(3367-78XM) |(3367-78ZM) |(3367-792M) |(3367-795M) |(3367-797M) |(3367-79AU) |(3367-79HM) |(3367-7A52) |(3367-7A59) |(3367-7AD3) |(3367-7AD5) |(3367-7AF9) |(3367-7AH5) |(3367-7AJ5) |(3367-7AQ2) |(3367-7AQ9) |(3367-7CTO) |(3368-83AU) |(3368-85AU) |(3368-8CTO) |(3368-a83UM) |(3369-91A3) |(3369-91A4) |(3369-91L1) |(3369-9A34) |(3369-9A37) |(3369-9A56) |(3369-9A62) |(3369-9A66) |(3372-22AU) |(3372-23AU) |(3372-2A11) |(6283-31B0)

Lenovo ThinkPad X140 e:

20BL0004US | 20BL0005US | 20BL0006US | 20BL0007US | 20BL0008US | 20BL000BUS | 20BL000CUS | 20BL000DUS | 20BL000EUS | 20BL000FUS | 20BL000GUS | 20BM0009US | 20BM000AUS | 20BM000BUS | 20BM000CUS | 20BM000DUS

COMPATIBLE ORIGINAL BATTERY NUMBERS

Lenovo:

0A36290 | 0A36292 | 42T4943 | 42T4945 | 42T4947 | 42T4948 | 42T4949 | 42T4951 | 42T4952 | 42T4957 | 42T4958 | 42T4959 | 42T4960 | 42T4961 | 42T4962 | 45N1056 | 45N1057 | 45N1058 | 45N1059 | 45N1060 | 45N1061 | 45N1062 | 45N1063 | 45N1174 | 45N1176 | ASM 42T4948 | ASM 42T4958 | ASM 42T4960 | ASM 42T4962 | ASM P/N 42T4952 | FRU 42T4947 | FRU 42T4957 | FRU 42T4959 | FRU 42T4961 | FRU P/N 42T4951

REMARKS
- Please confirm your laptop model and battery number before placing an order
Product Type: Replacement Laptop Battery

Condition: New

Cell Type: Conventional Li-ion

Capacity: 4400mAh / 49Wh

Device Voltage: 11.1V

Product Type:	Replacement Laptop Battery
Condition:	New
Cell Type:	Conventional Li-ion
Capacity:	4400mAh / 49Wh
Device Voltage:	11.1V

Laptop Battery FAQs How To Find The Correct Battery?

How can I extend laptop battery life through settings?

Use Battery Saver or Power Saver mode to minimize background activity and reduce screen brightness. Choose energy-efficient power plans instead of “Balanced” or “High Performance”.

Does reducing screen brightness really help my battery last longer?

Yes. The display is one of the largest power drains. Lowering brightness can significantly conserve battery life.

Will closing unused apps and tabs improve battery life?

Yes. Idle apps and browser tabs continue consuming power. Closing them reduces background activity and extends runtime.

Is keeping my laptop cool important for battery longevity?

Absolutely. Heat accelerates battery wear. Use your laptop on hard surfaces, keep vents clean, and consider a cooling pad during heavy use.

What’s the ideal battery charge range for long-term health?

Keep the battery between 20% and 80% whenever possible. Avoid full discharges or keeping it at 100% constantly.

Are regular OS and driver updates important?

Yes. Updates often include power efficiency improvements, helping your system run more smoothly and save battery.

Should I unplug unused peripherals to save power?

Yes. Devices like external drives, USB accessories, and Bluetooth peripherals draw power even when idle. Disconnect them when not needed.

Is shutting down better than sleep for battery conservation?

Yes. Sleep still draws some power. Shutting down completely conserves the most battery during long idle periods.

Can hibernation extend battery life effectively?

Yes. Hibernation saves your session to disk and powers off completely, using no battery while preserving your work.

What quick tips help in a battery pinch?

Turn off Wi-Fi and Bluetooth when not in use, close background apps, use dark mode, and enable power-saving display settings.

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.

A Li-Ion battery labeled 10.8V is the same as one labeled 11.1V.
A Li-Ion battery labeled 14.4V is the same as one labeled 14.8V.

Example Battery Labels

Example laptop bottom label with model number

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