Q: What internal battery fits the Lenovo ThinkPad X240 and T440? The 45N1110 (also known as 45N1108 / 45N1109 / 45N1111 / 45N1112 / 45N1113 / 121500143 / 121500144) is the OEM replacement internal battery for Lenovo ThinkPad X240, X240S, X250, X260, X270, T440, T440S, T450, T450S, L450, L450S. Rated at 24Wh / 11.1V, 3-cell Li-ion (Made in Japan). Ships with a 1-year warranty and is 100% brand new.
Product Specifications
| Attribute | Details |
|---|---|
| Battery Model | 45N1110 / 45N1108 |
| Capacity | 2.09Ah / 24Wh |
| Voltage | 11.1V |
| Battery Type | Li-ion (3 cells) |
| Cell Origin | Made in Japan |
| Color | Black |
| Warranty | 1-Year Warranty |
| Condition | 100% Brand New |
Replace Part Numbers
- 45N1108
- 45N1109
- 45N1110
- 45N1111
- 45N1112
- 45N1113
- 121500143
- 121500144
Compatible Laptop Models
- ThinkPad X240
- ThinkPad X240S
- ThinkPad X230S
- ThinkPad X250
- ThinkPad X260
- ThinkPad X270
- ThinkPad T440
- ThinkPad T440S
- ThinkPad T450
- ThinkPad T450S
- ThinkPad L450
- ThinkPad L450S
Flex-3 Compatibility Note
Q: Does 45N1110 fit ThinkPad X220, X230, or T430?
No. The 45N1110/45N1108 (11.1V, 24Wh, 3-cell internal) is designed exclusively for the ThinkPad X240–X270 and T440–T450 series that support internal + external dual-battery setups. Earlier models like the X220 (external 29++, 0A36282), X230 (44++, 0A36305), and T430 (70+, 0A36303) use external-only batteries with different connectors and voltage rails. Always verify your exact ThinkPad model number before ordering.
Why Choose This Battery
Precision-engineered internal replacement for Lenovo ThinkPad business laptops. Japanese Li-ion cells deliver stable 11.1V output and 500+ charge cycles. Slim design preserves the ThinkPad profile with no added bulk. Backed by a 1-year warranty.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.High Quality Garanteed
Our battery products are manufactured using high-quality materials and advanced technology to ensure stability and reliability.
The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
China warehouse delivery method
Shipping Methods
Ship To
Est. Delivery Time
Shipping Cost
Taxes & Fees
USPS
United States(No AK/HI, PR/GU, PO Boxes, or APO/FPO)
10-15 business days
Free
Free
Canada Post
Canada
10-15 business days
Free
Free
Royal Mail / Yodel
United Kingdom
15-20 business days
Free
Free
Local Carriers
Germany/Netherlands/Norway
15-20 business days
Free
Free
La Poste
France
15-20 business days
Free
Free
Local Carriers
Australia/New Zealand
15-20 business days
Free
Free
Correios
Mexico/Spain/IT
15-25 business days
Free
Free
Local Carriers
SE Asia / East Asia
5-10 business days
Free
Free
Local Carriers
Rest of Europe
20-25 business days
From $5.99
Free
Local Carriers
UAE / Saudi Arabia / Israel
16-20 business days
From $7.99
Free
Overseas Warehouse Shipping Times & Costs
Shipping Methods
Ship To
Est. Delivery
Shipping Cost
Taxes & Fees
US Warehouse
United States
3-7 business days
Free
Free
European Warehouse
EU countries
5-7 business days
€0 – €5.99
pricing varies by country
Free
UK Warehouse
United Kingdom
3-7 business days
Free
Free
Canada Warehouse
Canada
5-7 business days
Free
Free
Payment Methods
Paypal
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Google Pay
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Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
If you cannot use the above payment methods and the order amount exceeds HK$2000, please contact our customer service to obtain your bank account and pay via bank transfer.
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- What Should I Know Before Buying a Laptop Battery Replacement?A: Before buying a laptop battery replacement, confirm your laptop’s exact model number and the part number printed on the original battery. Check the battery voltage, connector, physical dimensions, and compatibility list. Do not choose a battery based on appearance alone, because similar laptop models may use different batteries. Review the seller’s warranty, return policy, and product specifications before ordering.
- How Do I Find a Compatible Laptop Battery for My Device?A: To find a compatible laptop battery, identify your laptop’s full model number and the part number on the original battery. Compare these details with the replacement battery’s compatibility list and specifications, including voltage, connector type, and dimensions. If you are unsure, contact customer support with your laptop model and original battery part number before placing an order.
- Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- Why Is My Laptop Battery Not Charging?A: A laptop battery may not charge because of a faulty AC adapter, damaged charging port, loose connection, temperature protection, battery-health settings, or a worn-out battery. Confirm that you are using a compatible charger and inspect the cable and port for visible damage. Restart the laptop and review the manufacturer’s battery or charging settings. If the battery becomes unusually hot, swollen, or damaged, stop using it and seek professional assistance.
-
Are BatteryMall Laptop Batteries Reliable?BatteryMall laptop batteries are designed with safety and reliability in mind. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating, helping protect the battery during normal use. They are also CE, FCC, and RoHS certified. For the best experience, choose a compatible laptop battery that matches your exact laptop model and original battery part number, and follow the installation and care instructions. BatteryMall also provides a 1-year warranty on KingSener batteries purchased from BatteryMall; see the Product Warranty page for details.