Samsung NT501R5L-M15/C Replacement Battery 11.4V 3700mAh
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Samsung NT501R5L-M15/C Replacement Battery 11.4V 3700mAh - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
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.
Samsung NT501R5L-M15/C Replacement Battery 11.4V 3700mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.4V
Amp
3700mAh
Samsung NT501R5L Series — 11.4V Li-Polymer Replacement Battery (AA-PBUN3AB)
This 11.4V, 3700mAh (42.18Wh) Li-Polymer battery replaces the AA-PBUN3AB cell in Samsung NT501R5L-series notebooks. It fits the NT501R5L-M15/C, NT501R5L-L05/R, NT501R5L-M1S/C, NT501R5L-M1G/C, and over 290 additional NT501R5L variants. The connector, BMS handshake protocol, and physical dimensions match the original exactly.
- NT501R5L platform fit: All NT501R5L variants share the same 11.4V three-cell Li-Polymer configuration, identical connector pinout, and the same BMS communication line the Samsung EC firmware expects. One cell part number covers the full platform.
- Bench tested on actual hardware: We cycled this cell through charge and load on an NT501R5L unit. The BMS authenticated without error, the EC accepted the pack, and charge current tapered correctly at full state of charge. No false fault codes appeared.
- Post-swap calibration cycle: After installing, discharge the laptop through normal use until it hibernates at the low-battery cutoff — do not force shutdown. Then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting battery health as poor after swapping the AA-PBUN3AB
Samsung's EC reads cycle count and health data from the old cell's EEPROM. When a new cell arrives, that EEPROM data resets, and the firmware flags the pack as degraded because the stored figures don't match what it expects from a used unit. This is a firmware state issue, not a defect in the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the BIOS battery learn cycle rewrite its reference data against the new cell. After one or two cycles, the health indicator returns to normal.
Laptop shuts down at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC hasn't been calibrated against the new cell's actual discharge curve. The IC is still referencing voltage-to-capacity mappings from the old, degraded cell, so it reads the remaining charge as higher than it actually is — right up until the cell voltage drops below the BMS cutoff threshold. The laptop then cuts power with charge still displayed on screen. Run two full discharge-to-hibernate cycles, charging to 100% each time, to let the fuel gauge IC relearn the curve. After calibration, the gauge should align with actual cell voltage and not drop below 3.2V per cell at shutdown.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Samsung
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
Samsung battery health still shows "Poor" in the BIOS after I installed a brand-new AA-PBUN3AB replacement — why?
The Samsung EC pulls health data from the old cell's EEPROM. When a fresh cell installs, those stored figures are gone and the firmware flags it as a problem. This is a BIOS state issue, not a fault with the new battery. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% — the BIOS battery learn cycle will rewrite its reference data and clear the warning.
My NT501R5L fuel gauge was jumping around wildly for the first few charges after the battery swap — is the new cell faulty?
The fuel gauge IC calibrates its voltage-to-capacity curve against the specific cell it has seen discharged. After a cell swap, it has no valid reference data and estimates erratically until it builds a new discharge profile. The cell itself is not at fault. Run two complete discharge-to-hibernate cycles with full uninterrupted charges to 100% each time, and the fuel gauge IC will lock onto the new cell's actual curve.
My NT501R5L system info shows the wrong Wh rating — it reads lower than the 42.18Wh listed for the AA-PBUN3AB. Is this the wrong battery?
The Wh figure in Samsung's system info pulls from EEPROM data embedded in the cell's BMS firmware, and the reported value reflects the rated design capacity the manufacturer wrote to that chip — not a live measurement of the physical cell. Small differences between the EEPROM-stored value and the 42.18Wh specification on the listing are normal and don't affect actual charge capacity or compatibility. Confirm the battery is correct by checking voltage: the system should report 11.4V nominal and the pack should charge to approximately 13.05V at full state of charge.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
