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Oppo Find X5 5G BLP891 Replacement Battery 7.74V 2300mAh

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From $36.99 USD $45.99
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Fits Oppo Find X5 5G and PFFM10 models, replacing OEM part number BLP891 directly.
7.74V and 2300mAh capacity restores full charge cycles on this Li-Polymer platform after degradation.
Connector seats flat into the stock slot with no modification; locking tab engages on insertion.
We bench-tested this cell in the Find X5 5G charge circuit — BMS accepted the pack on first cycle without fault codes.
On first use after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates against the new cell 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.

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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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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.

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⚠️ 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

7.74V

Amp

2300mAh

Oppo Find X5 5G / PFFM10 — 7.74V Li-Polymer Replacement Battery (BLP891)

This is a 7.74V, 2300mAh Li-Polymer replacement battery for the Oppo Find X5 5G and PFFM10. It carries OEM part number BLP891 and slots into the same footprint as the original cell. If your Find X5 5G is shutting down unexpectedly, draining fast, or refusing to charge past a certain point, the cell is the first suspect.

  • Find X5 5G and PFFM10 fitment: Both the Find X5 5G and PFFM10 share the same BLP891 cell specification — same voltage rail, same physical dimensions (85.80 × 62.00 × 5.50mm), and the same BMS connector pinout. Swapping between these variants does not require any wiring changes.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Find X5 5G platform and confirmed the BMS handshake completes without fault flags. The protection circuit held cutoff correctly at both ends of the voltage window.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins — skipping this step causes erratic percentage readings for the first several cycles.

Sudden shutdown at 20–30% on the Find X5 5G after a cell swap

This is a voltage cliff problem, not a capacity problem. Under heavy modem or display load, the new cell's voltage drops faster than the fuel gauge IC expects based on the old cell's discharge curve. The phone reads 25% but the cell voltage has already sagged below the shutdown threshold — typically around 3.4V per cell under load. The fuel gauge IC needs a full uninterrupted discharge-charge cycle to relearn where that cliff sits. Run one complete cycle without interruption and the shutdowns stop in most cases.

USB-PD fast charge not triggering on the first cycle after replacement

After installing a new BLP891 cell, the charge IC on the Find X5 5G sometimes refuses to negotiate the VOOC or USB-PD fast charge handshake on the very first charge. This happens because the BMS starts in a conservative state until it has completed one full cycle and confirmed cell health. Plug in using the standard 5V charge mode first, let it reach 100%, then discharge normally. On the second charge, fast charging resumes at full negotiated wattage.

Compatible Models

Find X5 5G PFFM10

Replaces Part Numbers

BLP891

Technical Specifications

Voltage7.74V
Amp Hours2300mAh
Capacity2300mAh
Rate17.8Wh
Net Weight67g /2.36 oz
Gross Weight117g /4.13 oz
Approximate Weight117g /4.13 oz
Dimension 85.80 x 62.00 x 5.50mm

Product Highlights

  • Brand: Oppo
  • 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

My Find X5 5G won't power on after the new battery sat in a drawer for a few months — is the cell dead?

Probably not dead, but the BMS has locked out because the cell voltage dropped below roughly 2.5V during storage. Plug the phone into its original charger and leave it connected for 20–30 minutes without pressing anything — the charge IC needs to trickle current into the cell before the BMS will unlock and allow normal boot. If the screen shows any charge indicator within that window, the cell is recovering. If nothing appears after 45 minutes, measure cell voltage directly; anything below 2.0V means the cell has over-discharged past recovery.

The battery percentage on my Find X5 5G keeps jumping around after fitting the BLP891 — goes from 60% to 45% in seconds.

The fuel gauge IC is still calibrated to the old cell's discharge curve and is misreading the new one. This is a coulomb counter calibration issue, not a faulty battery. Run one full discharge — let the phone power off on its own — then charge to 100% without interruption at standard (non-fast) charge rate. The fuel gauge IC writes new curve data at the end of that cycle. Erratic jumps should settle by the second full cycle.

The Find X5 5G gets noticeably warm near the back panel while charging the new cell — is that normal?

A new high-impedance cell has slightly higher internal resistance than a worn-in one, so the charge IC works harder in the first few cycles and generates more heat than you'd see with a conditioned cell. Keep the phone out of its case during charging for the first three cycles to let heat dissipate freely. If the back stays cool to the touch after those cycles, the cell has settled. If it remains hot or the phone throttles charging speed after the third cycle, check that the charge port isn't restricting current — a dirty or damaged USB-C port will force the charge IC to retry handshakes repeatedly, which generates sustained heat.

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