Lenovo ThinkPad T490s 20NX0071US battery
Sale price ksh 7,798
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Battery Type: Li-ion
Voltage: 11.52V
Capacity: 57WH
Color: Black
Condition: Brand New
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The Lenovo ThinkPad T490s (20NX0071US) 57Wh battery is a professional-grade internal power unit designed for the slim, ultra-portable T490s series. Specifically engineered for the 20NX series, this 3-cell lithium-polymer battery provides a stable 11.52V output required to sustain 8th Gen Intel Core processors and energy-efficient 14-inch displays. The Lenovo ThinkPad T490s (20NX0071US) 57Wh Battery Price in Kenya is KSh 7,798.
This battery supports Lenovo’s Rapid Charge technology, allowing it to reach 80% capacity in about 60 minutes when used with a 65W USB-C adapter. It is the definitive solution for restoring your ultrabook's mobility, addressing common issues like "Battery Not Detected" errors, swelling, or the device failing to hold a charge throughout a full day of travel.
Who Should Buy This Battery?
The Lenovo ThinkPad T490s (20NX0071US) battery is an essential purchase for mobile executives, consultants, and developers in Kenya. It is ideal for those who prioritize the T490s’s lightweight 1.27kg chassis and need consistent power for remote meetings, airport transit, and productivity away from the office.
Lenovo ThinkPad T490s (20NX0071US) Battery Price Table
| Product | Model Compatibility | Capacity | Price in Kenya |
| Original 3-Cell Internal | ThinkPad T490s (20NX, 20NY), T14s Gen 1, T495s | 57Wh / 4948mAh | KSh 7,798 |
Lenovo ThinkPad T490s (20NX0071US) Battery Key Specifications Table
| Feature | Specification Details |
| Battery Type | Lithium-Ion Polymer (Li-Po) |
| Voltage Output | 11.52V |
| Capacity | 57Wh (Approx. 4948mAh) |
| Cell Count | 3-Cell Internal |
| Part Numbers | L18M3P71, L18L3P71, L18C3P71, 02DL013, 02DL014, 5B10W13904 |
| Compatibility | ThinkPad T490s, T495s, T14s Gen 1 (Intel/AMD) |
| Connector Type | Internal Multi-pin Cable Connector |
| Charging | Rapid Charge Supported (80% in 1hr) |
| Build Material | High-Density Grade A+ Cells |
| Cycle Life | 300–500 Recharge Cycles |
| Condition | Brand New |
Lenovo ThinkPad T490s (20NX0071US) Battery Design and Build Quality
The Lenovo ThinkPad T490s (20NX0071US) battery features a precision-engineered, ultra-thin internal design tailored specifically for the T490s’s slim 16.1mm chassis. Utilizing high-density 3-cell chemistry, it provides a larger 57Wh energy reservoir compared to the standard T490 model, without adding weight. The battery is protected by a thin-film heat shield to ensure consistent thermal performance in highly compact spaces.
Build quality is focused on high-end portability. The Lenovo ThinkPad T490s (20NX0071US) battery includes a flexible internal ribbon cable and standardized mounting tabs, ensuring a secure and interference-free electrical path to the motherboard that withstands frequent travel.
Lenovo ThinkPad T490s (20NX0071US) Battery Charging Speed and Efficiency
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Rapid Charge Support: Regains 80% charge in about 60 minutes, perfect for quick top-ups between flights or meetings.
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Firmware Integration: Fully recognized by Lenovo Vantage for real-time health monitoring and accurate battery percentage reporting.
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Stable Energy Delivery: Maintains a steady 11.52V output to ensure peak processor performance and system stability.
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Modern Standby Efficiency: High-quality lithium chemistry ensures minimal energy drain during sleep mode, keeping the laptop ready to wake instantly.
Lenovo ThinkPad T490s (20NX0071US) Battery Safety Protection Technologies
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Smart BMS Logic: The integrated Battery Management System ensures each of the three cells charges and discharges evenly to maximize longevity.
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Thermal Sensors: Built-in thermistors monitor internal cell temperature during Rapid Charge sessions to prevent overheating.
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Anti-Swelling Safety: The structural casing is designed to prevent cell expansion from damaging the laptop's glass trackpad or thin chassis.
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Short-Circuit Guard: Includes hardware-level safety fuses for immediate electrical cutoff in the event of an electrical fault.
Lenovo ThinkPad T490s (20NX0071US) Battery Ideal Use Cases
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Travel & Commuting: Restores the 12–16 hour runtime needed for international flights and long commutes.
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Mobile Business: Provides the reliability needed for all-day presentations and off-site client meetings.
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System Restoration: The definitive solution for replacing a degraded unit to keep your premium ultrabook performing at its best.
Lenovo ThinkPad T490s (20NX0071US) Battery Pros and Cons Table
| Pros | Cons |
| High 57Wh capacity offers superior runtime for ultrabooks | Internal installation requires removing the base cover |
| Supports 80% Rapid Charge in just 60 minutes | Requires a Phillips #0 precision screwdriver |
| Grade A+ cells ensure long-term stability and health | Not compatible with the standard T490 |
Lenovo ThinkPad T490s (20NX0071US) Battery Frequently Asked Questions (FAQs)
What is the price of the Lenovo ThinkPad T490s (20NX0071US) battery in Kenya?
The current price for this 57Wh high-quality internal replacement battery is KSh 7,798.
How do I safely replace the Lenovo ThinkPad T490s (20NX0071US) battery?
Restart and enter BIOS (F1). Navigate to Config > Power and select "Disable Built-in Battery." Once the system powers off, you can safely remove the base cover and swap the unit.
Will this battery fit the standard ThinkPad T490?
No. The T490s uses a physically wider 57Wh battery that is not interchangeable with the standard T490 (which uses a 50Wh or 51Wh battery).
Does this battery support fast charging?
Yes, it is fully compatible with Lenovo's Rapid Charge technology when used with an original 65W USB-C power adapter.
Lenovo ThinkPad T490s (20NX0071US) Battery Conclusion
The Lenovo ThinkPad T490s (20NX0071US) 57Wh battery at KSh 7,798 is the professional-grade solution to maintain the premium mobility of your business ultrabook. With its support for Rapid Charge, workstation-level safety protocols, and precision slim fit, it eliminates the frustration of being tethered to a wall outlet. Investing in this quality-grade replacement ensures that your T490s remains a powerful and mobile tool for all your professional achievements.
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Accurate delivery estimates are displayed on the product page and in the Checkout before you confirm your order.
Delivery estimates take into consideration both the delivery address and the types of products being ordered.
The remainder of this article discusses delivery times in more general terms.
Same Day Delivery / For Customers in Nairobi Metropolitan Area
We use Courier for these orders, which allows fast and reliable delivery to destinations across their comprehensive domestic network. Orders placed between 7 Am and 5 Pm will be delivered the same day otherwise they will be delivered the following day. Delivery times vary depending on a product's stock status and the intended delivery address. For very large orders, we may be forced to use Mainfreight as these orders lie outside of what Courier Rider services can handle. If your order is being shipped with Mainfreight, this will be indicated in your fulfilment email along with a tracking number.
Overnight Delivery
Most In stock products are delivered overnight anywhere in Kenya – provided the order is placed before the advertised cut-off time. Our Overnight Delivery cut-off is usually 4:30pm Monday to Friday, however, this is updated daily and the expected shipping date will be shown for you on the product page. Larger products take an additional 1–2 days to be delivered.
Evening Express Delivery
Same Day Delivery is available to Nairobi & its suburbs. Same Day Delivery orders are delivered between 4pm and 7pm in the evening on the same day your order is dispatched.
If you are ordering on a business day and before the cutoff time, the option will be called “Same Day Delivery”. If you are ordering after the cutoff time or on a weekend or public holiday, the option will be called “Evening Express Delivery”. And May incur extra Costs other than the standard shipping fee.
The warranty tendered hereunder, on the electronic product(s) sold under this invoice will be provided exclusively by their respective Authorized Agents/Distributors and are limited to one year from the date of this invoice, except otherwise mentioned as per the warranty conditions as carried along with the products(s) or mentioned on Rondamo Technologies Invoice
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