Product Overview
The X240 replacement battery delivers 6.34Ah (72Wh) with 6 cells of capacity at 11.22V for Lenovo ThinkPad X240, X250, X260 and X270 plus the compatible T / W / L / K series listed below. It directly replaces FRU numbers 45N1136, 45N1738, 45N1134 and 45N1777 (45N1124-45N1128 family), with premium Li-ion cells made in China. This US-stock unit is 100% brand new and ships fast with a 1-year warranty.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | 45N1738 / 45N1136 |
| Capacity | 6.34Ah (72Wh) — 6 Cells |
| Voltage | 11.22V |
| Battery Type | Li-ion |
| Cell | Made in China, high quality guarantee |
| Color | Black |
| Stock Location | US Stock |
| Condition | Replacement Battery (100% Brand New, 1-year warranty!) |
| Warranty | 1-Year Warranty |
Replace Part Numbers
- 45N1136
- 45N1738
- 45N1134
- 45N1777
- 45N1124
- 45N1125
- 45N1126
- 45N1127
- 45N1128
Compatible Models
- Lenovo ThinkPad X240
- Lenovo ThinkPad X250
- Lenovo ThinkPad X260
- Lenovo ThinkPad X270
- Lenovo ThinkPad T440
- Lenovo ThinkPad T440S
- Lenovo ThinkPad T450
- Lenovo ThinkPad T450S
- Lenovo ThinkPad T460
- Lenovo ThinkPad T460P
- Lenovo ThinkPad T550
- Lenovo ThinkPad T560
- Lenovo ThinkPad W550
- Lenovo ThinkPad W550S
- Lenovo ThinkPad L450
- Lenovo ThinkPad L460
- Lenovo ThinkPad P50S
- Lenovo ThinkPad K2450
- Lenovo ThinkPad K20-80
- Lenovo ThinkPad K21-80
Attention!!! Not for the X240S, x230S, P50, T450P, T460S, T470, T550S, T550F, T560S or T560P.
FAQ
Which ThinkPad models does this 72Wh X240 battery fit?
It fits Lenovo ThinkPad X240, X250, X260, X270, T440, T440S, T450, T450S, T460, T460P, T550, T560, W550, W550S, L450, L460, P50S, K2450, K20-80 and K21-80. Confirm one of the FRU codes (45N1136 / 45N1738 / 45N1134 / 45N1777) on your original battery before ordering.
Which models are NOT compatible with this battery?
Attention: this 72Wh 6-cell battery is not for the X240S, x230S, P50, T450P, T460S, T470, T550S, T550F, T560S or T560P. For a T470P or other unlisted model, verify your original battery FRU (45N1xxx series) first — an isolated-model battery must match exactly.
Is this battery US stock and ready to ship?
Yes — this listing is marked US Stock for local fast dispatch, and the battery is 100% brand new.
What warranty is included?
A 1-year warranty is included. The advanced Li-ion cells deliver stable voltage output and support hundreds of charge cycles with protection against overcharge, over-discharge, short-circuit and overheating.
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
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
VISA, MasterCard, the United States n Express,Maestro & Laser Card, APPLE Pay,etc.
PayPal never shares your financial information with us.
WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
Pay with Google Pay, which is more convenient and faster.
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.