Product Overview
The L21C4P71 is a 100% brand new Li-polymer replacement battery rated 3400mAh / 52.5Wh at 15.44V, built for the Lenovo ThinkPad T14 Gen 3 2022 and P14s Gen 3 2022 business laptops. It replaces part numbers L21C4P71, L21L4P71, L21D4P71, L21M4P71, L21M4P72, 5B10W51866 and SB10W51967, matching the original pack in fit, voltage and connector layout for dependable all-day mobile work. Grade-A cells and a built-in protection circuit prevent overcharge, over-discharge and short circuit. Ships in Black with a 1-year warranty.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | L21C4P71 |
| Capacity | 3400mAh / 52.5Wh |
| Voltage | 15.44V |
| Battery Type | Li-polymer |
| Cell | Made in China, high quality guarantee |
| Color | Black |
| Condition | Replacement Battery (100% Brand New, 1-year warranty!) |
Replace Part Numbers
- L21C4P71
- L21L4P71
- L21D4P71
- L21M4P71
- L21M4P72
- 5B10W51866
- SB10W51967
Compatible Models
For Lenovo ThinkPad T14 Gen 3 Series
- For Lenovo ThinkPad T14 Gen 3 2022 Series
For Lenovo ThinkPad P14s Gen 3 Series
- For Lenovo ThinkPad P14s Gen 3 2022 Series
FAQ
Which Lenovo laptops take the L21C4P71 battery?
It is the replacement pack for the Lenovo ThinkPad T14 Gen 3 2022 and ThinkPad P14s Gen 3 2022 series. Power off and confirm the battery code on the original pack before ordering.
Which part numbers does the L21C4P71 replace?
It replaces L21C4P71, L21L4P71, L21D4P71, L21M4P71, L21M4P72, 5B10W51866 and SB10W51967.
What are the L21C4P71 specifications?
15.44V Li-polymer rated 3400mAh / 52.5Wh in a Black housing, 100% brand new with multi-point safety testing and a 1-year warranty.
Is installation plug-and-play?
Yes. The pack is a drop-in replacement with no tools or software required, and its built-in protection circuit prevents overcharge, over-discharge and short circuit.
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.
China warehouse delivery method
Overseas Warehouse Shipping Times & Costs
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
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Google Pay
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Apple Pay
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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.
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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.