Lenovo ThinkBook 15 IIL 20SM battery 45wh Rapid Charger
Sale price ksh 8,758
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Battery Type: Li-ion
Voltage: 15.36V
Capacity: 45WH
Color: Black
Condition: Brand New
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The Lenovo ThinkBook 15 IIL 20SM 45Wh Original Battery is a high-performance internal 3-cell lithium-polymer power unit. Designed specifically for the 15.6-inch ThinkBook 15 IIL (Type 20SM), this battery provides the stable 11.25V or 11.4V output required for its 10th Gen Intel Core hardware. At KSh 8,758, this 45Wh unit is the certified original replacement for part numbers L18M3PF1, L18L3PF1, and 5B10W67236. It is engineered with high-density cells to fit perfectly within the sleek internal chassis of the 20SM model, supporting Rapid Charge technology to ensure reliable power for business professionals and students who need a balanced blend of performance and mobility in Kenya.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery Price Table
| Component Name | Model Compatibility | Capacity | Price in Kenya |
| Original 3-Cell Internal | ThinkBook 15 IIL (20SM) | 45Wh / 4000mAh | KSh 8,758 |
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Key Specifications
| Feature | Specification Details |
| Model Numbers | L18M3PF1, L18L3PF1, L18C3PF1 |
| Compatible Part Nos | 5B10W67236, 5B10W67237, 5B10W67238, 5B10W67239 |
| Capacity | 45Wh (approx. 4000mAh) |
| Voltage | 11.25V / 11.4V |
| Battery Type | Lithium-ion Polymer (Li-Po) |
| Cell Count | 3-Cell |
| Compatibility | ThinkBook 15 IIL, 15-IML, 14 IIL, 14-IML |
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Battery Charging Speed and Efficiency
The Lenovo ThinkBook 15 IIL 20SM 45Wh Original Battery is optimized for modern professional mobility:
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Stable Power Delivery: Specifically tuned for the 15.6-inch ThinkBook hardware, providing a consistent power curve for daily office suites, video calls, and multitasking.
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Rapid Charge Support: Fully compatible with Lenovo’s 65W USB-C power adapters, allowing the battery to reach up to 80% charge in approximately 60 minutes for professionals on the go.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Battery Safety Protection Technologies
Safety is a core priority for the Lenovo ThinkBook 15 IIL 20SM 45Wh Original Battery:
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Multi-Stage Circuit Guard: Protects against over-voltage, over-current, and internal short circuits to safeguard the laptop's premium motherboard.
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Thermal Monitoring Sensors: Built-in sensors monitor internal cell temperatures, automatically regulating power flow to prevent thermal stress during fast charging or high-load processing.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Battery Connectivity and Compatibility
This internal battery is the essential fit for the first-generation ThinkBook 15 series in Kenya:
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Model Compatibility: Specifically for the ThinkBook 15 IIL (Type 20SM) and ThinkBook 15-IML.
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Part Number Match: Certified replacement for OEM part numbers L18M3PF1 and 5B10W67236.
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System Integration: Fully recognized by Lenovo Vantage for real-time health monitoring, cycle tracking, and battery health optimization.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Charger Cable Strength and Durability
The bridge between the internal cells and the system is managed by a high-quality flexible connector:
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Reinforced Internal Ribbon: The main battery-to-motherboard cable is designed to withstand the heat cycles and physical demands of a modern business laptop.
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Precision Header: Features a high-quality plastic header that ensures a vibration-proof, secure connection to the motherboard's power port.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Battery Energy Management and Heat Control
The Lenovo ThinkBook 15 IIL 20SM 45Wh Original Battery utilizes advanced management to maximize longevity:
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Cycle Longevity: Engineered to maintain high capacity over hundreds of charge-discharge cycles, ideal for daily corporate and professional use.
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Low Thermal Resistance: High-quality polymer cells generate minimal heat during discharge, protecting the laptop’s internal components from thermal stress in slim business designs.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Ideal Use Cases
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Corporate Productivity: Perfect for professionals who need a reliable battery for client meetings, document creation, and remote work.
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Academic Excellence: Provides the necessary stamina for long sessions at university or school away from a power outlet.
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Device Restoration: The perfect choice to replace a dead or non-performing battery and restore your ThinkBook’s original portability and performance.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Pros and Cons Table
| Pros | Cons |
| Genuine Lenovo OEM Quality | Internal installation required |
| Specifically Tuned for ThinkBook 15 | Fixed voltage (11.25V/11.4V) |
| Supports Lenovo Rapid Charge | Not compatible with ThinkBook G2/G3/G4 |
| Safety and Thermal Certified |
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – FAQs
Q: Will this fit the ThinkBook 15 Gen 2 (G2)?
A: No. The Gen 2 and later models use a physically different battery design. This unit is strictly for the first-generation ThinkBook 15 (IIL/IML) variants.
Q: How do I install this battery?
A: Installation requires removing the bottom cover of the laptop using a Philips screwdriver. You must carefully disconnect the internal battery header from the motherboard before unscrewing the old unit. It is recommended to disable the "Built-in Battery" in the BIOS first.
Q: How do I know if I need a new battery?
A: Common signs include the laptop only working when plugged in, a "Battery not detected" error, or if the laptop shuts down unexpectedly when the percentage gets low.
Lenovo ThinkBook 15 IIL 20SM 45Wh Battery – Conclusion
The Lenovo ThinkBook 15 IIL 45Wh Original Battery at KSh 8,758 is the definitive professional-grade solution to restore the mobility of your 15-inch laptop. By choosing a genuine OEM replacement, you ensure safety, maximum runtime, and full compatibility with your system's hardware.
Cash Payments (Nairobi only)
We accept Cash Payments . This is applicable for Pay on Delivery orders within Nairobi Metropolitan area.
Mpesa Payment.
- Go to Safaricom SIM Tool Kit, select M-PESA menu, select “Lipa na M-PESA“
- Select “Pay Bill“
- Select “Enter Business no.“, Enter Rondamo technologies Lipa na M-PESA PayBill Number 964586 and press “OK”
- Account no. ( Indicate Order No. & Your Name)
- “Enter Amount : ( Total shown on Invoice)
- Enter your M-PESA PIN and press “OK”
This is applicable for all orders, both in Nairobi & upcountry besides large orders over Ksh 250,000/-
Bank Deposit /EFT
You can deposit payment for your order directly into our Stanbic bank account. We check our bank account for new payments every day but depending on your bank it can take 1–2 business days for your payment to appear. To ensure that we can reconcile your payment quickly please make sure you follow the instructions carefully and include a reference with your payment.
Pesalink
You can deposit payment for your order directly into our Stanbic bank account via Pesalink. all products are eligible for payment via Pesalink. To ensure that we can reconcile your payment quickly please make sure you follow the instructions carefully and include a reference with your payment.
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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