52.5wh Lenovo Flex-15IWL 81SR battery
Sale price ksh 9,718
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Battery Type: Li-ion
Voltage: 11.25V/11.35V/11.4V
Capacity: 52.5wh
Color: Black
Condition: Brand New
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24 Hrs Delivery All Over Kenya
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The Lenovo IdeaPad Flex-15IWL (81SR) 52.5Wh Original Battery is a premium internal 3-cell lithium-polymer power unit. Engineered for high-performance 2-in-1 convertibles, this battery provides the necessary energy density to support 15.6-inch touchscreens and Intel Whiskey Lake processors during intensive multitasking or media consumption.
Priced at KSh 9,718, this 52.5Wh unit is the high-capacity replacement for part numbers L18C3PF7, L18L3PF3, L18M3PF7, and 5B10T09094. It operates at 11.25V (compatible with 11.4V) and serves as a direct upgrade for Flex-15 models that may have originally shipped with the smaller 36Wh base battery, fitting perfectly into the existing chassis mounting points.
Lenovo IdeaPad Flex-15IWL Battery: Who Should Buy This?
This battery is the ideal choice for Flex-15IWL (81SR), C340-15IWL, and S340-15IWL users in Kenya facing:
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Capacity Upgrade Needs: You want to maximize your unplugged time by moving from a standard 36Wh cell to this 52.5Wh high-tier version.
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Touchscreen Instability: The laptop experiences "ghost touches" or display flickering when the battery level is low, often caused by inconsistent voltage from a failing cell.
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Rapid Discharge: The battery percentage drops drastically (e.g., from 40% to 5%) in a matter of minutes.
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Hinge-Related Power Issues: The device loses power when rotated into "Tent" or "Tablet" mode, suggesting the internal battery casing has softened or failed.
Lenovo IdeaPad Flex-15IWL (81SR) 52.5Wh Battery Price Summary
| Component Name | Model Compatibility | Capacity | Price in Kenya |
| Original 3-Cell Internal | Flex-15IWL (81SR) | 52.5Wh / 4670mAh | KSh 9,718 |
Lenovo IdeaPad Flex-15IWL (81SR) Battery Key Specifications
| Feature | Specification Details |
| Model Numbers | L18C3PF7, L18L3PF3, L18M3PF7 |
| Compatible Part Nos | 5B10T09094, 5B10T09095, 5B10W67289, 5B10W67217 |
| Capacity | 52.5Wh (approx. 4670mAh) |
| Voltage | 11.25V / 11.34V / 11.4V |
| Battery Type | Lithium-ion Polymer (Li-Po) |
| Cell Count | 3-Cell |
| Compatibility | Flex-15IWL (81SR), S340-15IWL, C340-15IWL, S340-15API |
Lenovo IdeaPad Flex-15IWL (81SR) Battery Performance and Safety
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High-Density Cells: Utilizes Grade A cells to ensure consistent power delivery even under heavy CPU/GPU loads.
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Intelligent Protection: Equipped with a built-in safety board that prevents overcharging and thermal syncing to protect the motherboard.
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Rapid Charge Ready: Fully supports Lenovo’s Rapid Charge technology, allowing the battery to reach up to 80% capacity in approximately one hour when used with a 65W original adapter.
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Firmware Accuracy: Communicates natively with Lenovo Vantage for precise charge threshold management and health reporting.
Lenovo IdeaPad Flex-15IWL (81SR) Battery Pros and Cons
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Pros: Maximum 52.5Wh capacity for KSh 9,718; direct upgrade for better mobile endurance; 0-cycle brand new cells for longevity.
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Cons: Internal installation requires removing the bottom base cover; physically larger than the 36Wh version (though mounting points are the same).
Lenovo IdeaPad Flex-15IWL (81SR) Battery Frequently Asked Questions (FAQs)
Can I use this 52.5Wh battery if my laptop came with a 36Wh one?
Yes. The 52.5Wh (L18C3PF7) is designed to fit the same space as the 36Wh (L18C3PF6) battery. It is a common and highly recommended upgrade for users needing longer runtime.
How much runtime should I expect?
In standard productivity mode (browsing and office work) at 50% brightness, this battery typically provides 5 to 7 hours of runtime.
Lenovo IdeaPad Flex-15IWL (81SR) Battery Conclusion
At KSh 9,718, the Lenovo IdeaPad Flex-15IWL 52.5Wh Battery is the definitive power solution for users who value mobility and need to restore the full multimedia capabilities of their 15-inch convertible.
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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