Lenovo ThinkBook 15 IML battery
Sale price ksh 9,838
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Battery Type: Li-ion
Voltage: 11.52V
Capacity: 57WH
Color: Black
Condition: Brand New
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The Lenovo ThinkBook 15-IML (Type 20RW) Original Battery is a professional-grade 3-cell internal lithium-polymer power unit. Specifically designed for the first generation of the 15.6-inch ThinkBook series, this 45Wh battery balances a slim profile with the sustained energy required for business productivity and multitasking. Operating at a nominal 11.52V (approx. 4140mAh), it is the direct OEM replacement for part numbers L19M3PF1, L19C3PF1, and 5B10X55573. At KSh 9,838, this battery ensures your device maintains its Rapid Charge capabilities and seamless synchronization with Lenovo Vantage power management software, restoring the original 9–11 hour runtime.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery Price Table
| Component Name | Model Compatibility | Capacity | Price in Kenya |
| Original 3-Cell Internal | ThinkBook 15-IML (20RW) | 45Wh / 4140mAh | KSh 9,838 |
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Key Specifications
| Feature | Specification Details |
| Model Numbers | L19M3PF1, L19C3PF1, L19L3PF1, L19D3PF1 |
| Compatible Part Nos | 5B10X55573, 5B10X55571, 5B10W67257, 5B10V25250 |
| Capacity | 45Wh (approx. 4140mAh) |
| Voltage | 11.52V / 11.55V |
| Battery Type | Lithium-ion Polymer (Li-Po) |
| Cell Count | 3-Cell |
| Compatibility | ThinkBook 15-IML (20RW), 15-IIL (20SM) |
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Battery Charging Speed and Efficiency
The ThinkBook 15-IML 45Wh battery is designed for the modern business workflow:
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Rapid Charge Support: When paired with a 65W USB-C adapter, this battery can recover 80% of its charge in approximately one hour.
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Energy-Dense Architecture: Uses premium cells to provide the necessary current for 10th Gen Intel Core i5/i7 processors and FHD anti-glare displays without adding bulk.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Battery Safety Protection Technologies
Reliability is central to the ThinkBook’s corporate identity:
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Advanced Circuit Protection: Integrated safety chips monitor energy levels to prevent over-voltage, thermal spikes, and short-circuits.
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Vantage Calibration: Optimized for the "Battery Gauge Reset" tool in Lenovo Vantage, keeping the remaining runtime indicator precise and avoiding sudden shutdowns.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Battery Connectivity and Compatibility
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Secure Internal Fit: Specifically molded to fit the unibody aluminum-top chassis of the 15-inch ThinkBook series, ensuring a perfect physical match.
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Verified Handshake: Guaranteed to be recognized by the Lenovo BIOS, ensuring accurate percentage reporting and avoiding software "battery not genuine" warnings.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Charger Cable Strength and Durability
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Precision Power Header: Features a high-quality internal connector designed for a firm, vibration-proof electrical link to the motherboard.
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Shielded Ribbon Design: The internal battery ribbon is high-flex and shielded, resistant to the heat generated during heavy processing and fast-charging cycles.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Battery Energy Management and Heat Control
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Low Self-Discharge: Premium Li-Po chemistry ensures the battery retains its charge for long standby periods, ideal for professionals on the move.
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Active Thermal Monitoring: Integrated thermistors monitor cell temperature in real-time to adjust charging speeds and prevent heat degradation.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Ideal Use Cases
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Business Productivity: Restores the dependability needed for long workdays, video conferencing, and multitasking.
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Remote Fieldwork: Provides the mobile endurance required for working in coffee shops or while commuting without constant access to an outlet.
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Hardware Refresh: The essential replacement for a failing battery that only works when plugged in or has begun to swell.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Pros and Cons Table
| Pros | Cons |
| Genuine OEM Spec for KSh 9,838 | Internal replacement requires base removal |
| Supports 80% Rapid Charge in 60 mins | Requires T5 Torx and Phillips tools |
| Exact fit for the 20RW model | 45Wh is the standard (not extended) size |
| BIOS-recognized for health tracking |
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – FAQs
Q: Can I upgrade to the 57Wh battery model?
A: The 57Wh battery fits in some 20RW configurations, but only if your laptop does not have a 2.5-inch SATA hard drive installed. If you use a SATA HDD, you must use this 45Wh model for clearance
Q: How do I safely install this battery?
A: Before opening the chassis, enter the BIOS (F1 at startup) and select Config > Power > Disable Built-in Battery. This electronically disconnects power for safe internal servicing
Q: My laptop shut down suddenly at 15%. Will this fix it?
A: Yes. Sudden drops in percentage are a primary symptom of a failing lithium-polymer cell. Replacing it with this new original-spec unit for KSh 9,838 will resolve those calibration issues.
Lenovo ThinkBook 15-IML 20RW 45Wh Battery – Conclusion
The Lenovo ThinkBook 15-IML (20RW) 45Wh Battery at KSh 9,838 is the definitive replacement part to restore the professional reliability and mobile endurance of your ThinkBook. By choosing a genuine-spec replacement, you ensure device safety and restore the consistent power delivery required for your daily business tasks.
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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