Replacement Battery Specification
- Battery Model: L21L4P73
- Capacity: 57Wh/3711MAH
- Voltage: 15.36V
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New,1-year warranty!)
Replace Part Numbers
- L21L4P73
- SB10W51975
- 5B10W51874
- 4ICP5/68/70
- L21M4P75
- SB10W51976
- 5B10W51875
- L21B4P71
- SB10W51978
- 5B10W51877
- L21D4P74
- SB10W51977
- 5B10W51876
Compatible Laptop Models
- For Lenovo ThinkPad T14s Gen 3 (Type: 21BR 21BS 21CQ 21CR) series
- For Lenovo ThinkPad T14s Gen 4 (Type: 21F6 21F7 21F8 21F9) series
- For Lenovo ThinkPad T14s 3rd Gen (2022) Series
Product Features
- Extended Battery Life: 57Wh capacity delivers reliable power for Lenovo ThinkPad T14s Gen 3 and Gen 4 laptops, providing hours of productivity for work, study, and business tasks on the go.
- OEM-Grade Quality: Manufactured with premium lithium-ion cells to meet or exceed original Lenovo specifications, ensuring reliable performance and long-term durability for daily business use.
- Wide Compatibility: Designed specifically for Lenovo ThinkPad T14s Gen 3 and Gen 4 series, ensuring perfect fit and optimal performance for these business laptops.
- Advanced Li-ion Technology: High-quality lithium-ion cells deliver stable voltage output, efficient charging cycles, and longer battery lifespan with support for hundreds of charge-discharge cycles.
- Easy Installation: Direct drop-in replacement for original Lenovo battery with simple plug-and-play design, no technical expertise required for battery swap.
- Comprehensive Safety Protection: Built-in protection circuitry guards against overcharge, over-discharge, short-circuit, and overheating to ensure safe operation and protect your laptop.
Why Choose This Battery?
This L21M4P75/L21B4P71/L21L4P73/L21D4P74 replacement battery is the perfect power solution for professionals, business users, and mobile workers with Lenovo ThinkPad T14s Gen 3 and Gen 4 laptops. With 57Wh capacity and 15.36V output, it delivers reliable runtime for productivity tasks, web browsing, video conferencing, and business applications, keeping your laptop running when you need it most.
Compatible with Lenovo ThinkPad T14s Gen 3 and Gen 4 series, this battery is backed by a 1-year warranty and rigorous quality testing. Perfect for business professionals, remote workers, and anyone who needs reliable backup power for their Lenovo ThinkPad laptop.
Restore your laptop's mobility and productivity with this affordable, high-quality replacement battery that delivers the dependable power you need for all-day computing.
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.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.
Shipping Methods
| Shipping Methods | Ship To | Est. Delivery Time | Shipping Cost | Taxes & Fees |
|---|---|---|---|---|
| USPS / DHL | United States | 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 |
| DHL | Germany | 15-20 business days | Free | Free |
| La Poste | France | 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 |
📦 Shipping & Tracking Information
Looking for faster shipping? We offer local warehousing services. Please visit our "Local Delivery" page for items available for immediate dispatch.
1. How to Track Your Package:
Please choose the tracking link that corresponds to your destination:
- Europe & The Americas: 17track.net/en
- The Middle East: mena56.com
- Asia: 17exp.kingtrans.cn
Need Help?
If you cannot find your package on any of the above websites, please contact us immediately.
📧 Email: sales@batterymall.com / info@batterymall.com
📱 WeChat/WhatsApp: (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 Estimated Delivery Time
(1) Shipping from China:
- To Asia: 5-20 business days
- To North America: 10-15 business days
- To Europe/South America: 15-20 business days
(2) Shipping from Local Warehouses:
- From US Warehouse: 3-5 business days
- From European Warehouse: 2-10 business days
- From Russian Warehouse: 3-5 business days
Please note: Exact arrival times depend on the specific country and customs processing.
⚠️ Tax & Customs Information:
Global product prices include customs duties (some countries require a tax ID). Please refer to the settlement invoice for specific shipping costs. Special handling is required if your package is inspected.
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
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - 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.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
-
Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.