Asus X551C Replacement Battery 11.25V 2600mAh A41N1308
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
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Asus X551C Replacement Battery 11.25V 2600mAh A41N1308 - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Asus X551C Replacement Battery 11.25V 2600mAh A41N1308 - is backordered and will ship as soon as it is back in stock.
Voltage
11.25V
Amp
2600mAh
Asus X551C / X551CA Series — 11.25V Li-ion Replacement Battery (A41N1308)
This is an 11.25V, 2600mAh (29.25Wh) Li-ion replacement battery for the Asus X551C and X551CA notebook series. It replaces OEM part numbers A41N1308, A31N1308, A31N1319, and several additional Asus factory codes. When the original cell degrades and your laptop no longer holds a charge unplugged, this cell restores full untethered use.
- X551C and X551CA compatibility: These models share the same 11.25V three-cell battery bay, connector pinout, and BMS communication protocol — which is why a single cell covers both the standard X551C and all X551CA sub-variants including the 0051A2117U and SX014H configurations.
- Bench tested on actual hardware: We ran this cell through charge, load, and discharge cycles on X551-series hardware. The BMS handshake completed correctly, the charge controller accepted the cell without fault codes, and voltage held stable across CPU and display load transitions.
- Post-install calibration on the X551 series: After fitting this battery, run the laptop down until Windows forces hibernate, then charge it uninterrupted to 100% without unplugging mid-cycle. The X551's BIOS uses this full discharge-to-charge pass to reset its internal battery learn cycle — skipping it leaves the fuel gauge reading inaccurate and often triggers a false "Consider replacing your battery" warning in Windows.
BIOS reporting poor battery health immediately after fitting the new cell
The X551's BIOS stores health metrics from the previous cell in EEPROM. When a new cell is installed, the BIOS compares current readings against that cached data and flags the health as poor or unknown — even though the cell is brand new. This is not a fault with the replacement battery. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%, and the BIOS learn cycle will overwrite the stale EEPROM values. After two to three cycles, health reporting normalises.
Laptop shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC still holds calibration data from the old, degraded cell. The displayed percentage does not match actual cell voltage — the laptop shuts down because voltage drops below the hardware cutoff threshold before the gauge reaches 0%. It is a calibration gap, not a defective replacement cell. Force a full discharge to hibernate cutoff, charge uninterrupted to 100%, and repeat once more — after two calibration cycles the gauge tracks actual cell voltage accurately and shutdowns at false percentages stop.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Asus
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
Windows says "Consider replacing your battery" right after I installed the new cell — is something wrong with it?
Nothing is wrong with the cell. The X551's BIOS cached health data from your old degraded battery in EEPROM, and it's comparing the new cell against that stored profile. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% without unplugging mid-cycle. That resets the BIOS learn cycle, clears the stale EEPROM values, and the warning disappears within two to three cycles.
System info shows the battery Wh rating as lower than what's printed on the cell — why don't the numbers match?
The Wh figure shown in Windows or HWiNFO is pulled from EEPROM data written during the factory pairing of the original cell — it reflects what the old battery reported, not the physical capacity of the replacement. After the BIOS completes a full learn cycle (one full discharge to hibernate, one uninterrupted charge to 100%), it recalculates and rewrites the Wh figure based on the new cell's actual chemistry. Check system info again after two full cycles and the reported value will align with the 29.25Wh rating.
The laptop charges fine but the battery percentage jumps around wildly — 60% one minute, 45% the next
The fuel gauge IC on the X551 series is still using its calibration map from the old cell, so voltage readings translate to wildly incorrect percentages. This is a calibration issue, not a hardware fault. Discharge the laptop fully to hibernate cutoff, then charge it in one uninterrupted session to 100% — repeat this twice. By the second or third cycle the fuel gauge IC has rebuilt its calibration curve against the new cell and percentage readings stabilise.
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