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OnePlus Nord N10 5G BLP815 Replacement Battery 3.87V 4150mAh

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From $26.99 USD $33.99
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Fits OnePlus Nord N10 5G, part number BLP815 replacement battery.
Delivers 3.87V and 4150mAh lithium-polymer capacity for full device operation.
Connector seats vertically into the battery slot with standard latch alignment.
Bench testing shows clean BMS handshake on first insertion without lockout faults.
On first charge cycle after installation, disable fast charging to let the fuel gauge IC recalibrate against this cell's discharge curve before high-current charging resumes.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

🔹 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: 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.

Voltage

3.87V

Amp

4150mAh

OnePlus Nord N10 5G — 3.87V Li-Polymer Replacement Battery (BLP815)

This is a 3.87V, 4150mAh (16.06Wh) Li-Polymer battery for the OnePlus Nord N10 5G, covering model numbers BE2025, BE2026, and BE2029. It replaces the original BLP815 cell when the existing battery no longer holds adequate charge or fails to power the device. Swap it when the phone shuts down unexpectedly or the percentage reading becomes erratic.

  • Nord N10 5G platform fit: The BE2025, BE2026, and BE2029 variants share the same cell footprint, connector pinout, and BMS handshake protocol — one battery covers all three. No modification required to the flex connector or housing.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on Nord N10 5G hardware. The BMS accepted the charge IC handshake without fault codes, and the fuel gauge IC tracked state-of-charge correctly after one full calibration cycle.
  • First-cycle fast charge tip: On first use after installation, disable Warp Charge for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.

Why the Nord N10 5G reports wrong battery percentage after a cell swap

The fuel gauge IC on the Nord N10 5G stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The IC reports percentage based on old data, so readings can appear inflated or deflated until the counter resets. One full discharge to automatic power-off followed by an uninterrupted charge to 100% forces the coulomb counter to re-anchor to the new cell's actual endpoints.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem or display draws a current spike and the cell voltage drops faster than the fuel gauge IC predicted — the phone reads 25% on its old curve but the cell is already near the BMS cutoff threshold. The BMS trips the protection circuit and the phone cuts off instantly to prevent deep discharge damage. It is not a faulty battery — it is an uncalibrated gauge reading a fresh cell with a steeper voltage cliff than the aged original. Run one full cycle without fast charging; after that, the gauge maps the new cliff correctly and shutdowns at low percentage stop.

Compatible Models

Nord N10 5G BE2025 BE2029 BE2026 BE2028

Replaces Part Numbers

BLP815

Technical Specifications

Voltage3.87V
Amp Hours4150mAh
Capacity4150mAh
Rate16.06Wh
Net Weight58.5g /2.06 oz
Gross Weight108.5g /3.83 oz
Approximate Weight108.5g /3.83 oz
Dimension 82.42 x 62.70 x 4.60mm

Product Highlights

  • Brand: OnePlus
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The phone won't turn on at all after the replacement battery sat in a drawer for a few months — is the cell dead?

The BLP815 cell likely tripped its BMS lockout from deep self-discharge in storage. When cell voltage drops below approximately 2.5V, the protection circuit opens and blocks normal power-on to prevent cell damage. Plug the phone into a charger and leave it connected for 20–30 minutes without pressing the power button — the charge IC needs to trickle current into the cell to bring voltage above the BMS re-enable threshold. Once the boot logo appears, continue charging to 100% before first use.

Warp Charge stopped working after I installed the replacement battery — the phone only charges slowly now.

Warp Charge uses a proprietary handshake between the charger, USB-PD controller, and the battery's BMS. On a new, uncalibrated cell, the BMS can flag an overcurrent condition on the first high-current cycle and fall back to standard 5V/1A charging as a protection response. Use the original OnePlus Warp Charge cable and adapter — third-party cables frequently fail the handshake even on a healthy cell. Complete one full slow-charge cycle to 100%, then retry Warp Charge; in most cases the BMS clears the flag after the first successful calibration cycle.

The phone feels noticeably warm near the back glass during charging — is that normal with the new cell?

A new high-impedance cell generates more heat during charging than a broken-in one because internal resistance is slightly higher before the first few cycles condition the cell. That warmth near the battery compartment is expected and typically reduces after three to five charge cycles as internal resistance settles. If the phone becomes hot enough to trigger a charging-paused notification, switch to a lower-current charger for the first two cycles. Warp Charge can be re-enabled once the cell has conditioned past that initial break-in period.

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