Technical Features & Performance
- Superior Cell Architecture
Unlike budget replacements, this lenovo x131e battery utilizes “Grade A” cells. This ensures a more consistent discharge curve and prevents the sudden “percentage drops” that plague lower-quality units. With a 2600mAh rating, it is designed to handle between 4 to 7 hours of active use, depending on your power profile.
- Multi-Level Safety Guard
- Integrated Circuit Protection: Built-in safeguards against short-circuiting and thermal runaway.
- Eco-Efficient Charging: Optimized for fast-charge cycles while maintaining low power consumption during idle periods.
- Exact OEM Dimensions: Measuring 206.90 x 55.20 x 20.50mm, it slides into your chassis with the same click as the original factory unit.
Comprehensive Compatibility Database
This battery serves as a universal power solution for a wide range of the Lenovo ThinkPad ecosystem.
Note: This list is a technical reference for identification. For a zero-risk purchase, we recommend a quick compatibility consultation with our team prior to checkout.
Supported Laptop Models:
- ThinkPad X-Series: X121e, X130e, X131e, X140e.
- ThinkPad Edge Series: E120, E125, E130, E135, E145, E320, E325, E330, E335.
- ThinkPad L-Series:
Technical Cross-Reference (Part Numbers):
0A36290, 0A36292, 3INR19-65-2, 42T4943, 42T4945, 42T4947, 42T4948, 42T4949, 42T4951, 42T4952, 42T4957, 42T4958, 42T4959, 42T4960, 42T4961, 42T4962, 45N1056, 45N1057, 45N1058, 45N1059, 45N1061, 45N1063, Battery 84, Battery 84+.
We Eliminate the Guesswork
Are you worried about ordering a battery that won’t charge or fit? We remove that fear entirely. By verifying your laptop’s serial number with us first, you get our Precision-Match Guarantee. If we confirm the fit and it still doesn’t work, we provide a 7-day return and exchange (subject to policy).
Direct Professional Support
Don’t guess which “FRU” number you need. Our team is standing by to cross-reference your current battery labels against our inventory. Confirming compatibility takes a few minutes and ensures that the battery arriving at your door is ready to work immediately.
Maintenance FAQ for Longevity
Is this battery user-replaceable?
Yes. The X131e features an external battery latch system. You can swap this battery in seconds without any specialized tools or opening the laptop chassis.
What is the best way to “break in” this new battery?
For the best long-term health, we suggest a full initial charge to 100%, followed by a discharge to roughly 10%. Repeating this cycle twice helps the Windows battery meter calibrate accurately to the new cells.
How do I identify my part number?
Look for the “ASM” or “FRU” number printed on your original battery. If it matches any of the codes in our list above (like 42T4951 or 45N1057), this is your correct replacement. If you are still struggling with the technical details, reach out and simply share a photo of the old battery.









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