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Vivo Y75 Replacement Battery B-D5 3.85V 2900mAh

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From $24.99 USD $30.99
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Fits Vivo Y75, Y75 Dual SIM, and Y75a — replaces OEM part number B-D5.
This cell delivers 3.85V at 2900mAh, matching the original pack capacity for full day runtime on typical use patterns.
Connector seats into the stock battery slot with no adapter needed — polarity and locking tab align to factory spec.
We bench-tested this pack on a Y75 motherboard; the BMS accepted charge without fault codes and held voltage steady under screen-load discharge.
On first charge after install, disable fast charging for one full discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell 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

3.85V

Amp

2900mAh

Vivo Y75 Series — 3.85V Li-Polymer Replacement Battery (B-D5)

This is a 3.85V, 2900mAh Li-Polymer replacement battery carrying OEM part number B-D5. It fits the Vivo Y75, Y75 Dual SIM, Y75 Dual SIM LTE, and Y75a. It replaces a degraded or damaged original cell to restore normal smartphone operation.

  • Y75 series compatibility: All listed Y75 variants share the same battery bay geometry, connector pinout, and BMS handshake protocol. The 76.30 × 59.14 × 4.02mm cell dimensions are consistent across the Y75, Y75 Dual SIM, Y75 Dual SIM LTE, and Y75a chassis.
  • Bench tested on actual hardware: We ran the B-D5 cell through charge and discharge cycles on Y75 hardware. The BMS accepted the charge IC handshake without fault codes, and voltage held steady under simultaneous screen and modem load.
  • Fuel gauge recalibration on first use: Disable fast charging for one complete discharge-charge cycle after installation. This allows the fuel gauge IC to build an accurate discharge curve against the new cell before high-current charging pushes current into an uncalibrated state.

Why the Vivo Y75 reports wrong battery percentage after a cell swap

The fuel gauge IC on the Y75 stores a discharge curve learned from the original cell over hundreds of cycles. When a new cell goes in, that stored curve no longer matches the actual cell chemistry, so the IC misreports state of charge. The fix is one full uninterrupted discharge down to automatic shutdown, followed by a full charge to 100%. After that cycle, the coulomb counter resets its baseline against the new cell and percentage readings stabilise.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops sharply under load — typically during LTE data bursts or peak screen brightness — faster than the fuel gauge IC predicted. The phone interprets the voltage cliff as a critical low and cuts power to protect the SoC. It is not a faulty cell. Run one full calibration cycle first, then retest. If shutdown still occurs below 3.6V under modem load, check that no background apps are spiking current draw during the event.

Compatible Models

Y75 Y75 Dual SIM Y75 Dual SIM LTE Y75a Y75a Dual SIM Y75a Dual SIM LTE

Replaces Part Numbers

B-D5

Technical Specifications

Voltage3.85V
Amp Hours2900mAh
Capacity2900mAh
Rate11.17Wh
Net Weight43g /1.52 oz
Gross Weight78g /2.75 oz
Approximate Weight78g /2.75 oz
Dimension 76.30 x 59.14 x 4.02mm

Product Highlights

  • Brand: Vivo
  • 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 Vivo Y75 powers on after fitting the new battery but shuts off without warning around 25% — is the cell faulty?

Likely not a faulty cell. The fuel gauge IC is still using a discharge curve calibrated to the old, degraded battery, so it misjudges how fast voltage drops under modem and screen load. Run one full cycle — discharge to automatic shutdown, then charge uninterrupted to 100% — before drawing conclusions. After recalibration, the shutdowns should stop; if they continue, check that the connector is fully seated and re-examine at 3.6V under load.

Fast charging worked on the old battery but the Vivo Y75 is only slow-charging after I installed the replacement — what's happening?

On the first cycle after a cell swap, the charge IC and BMS can fail to complete the proprietary protocol handshake that enables high-current charging, defaulting to standard 5V input instead. This usually clears itself after one full standard charge cycle. Plug in, let it charge fully at the slower rate without interrupting, then unplug and reconnect — most Y75 units resume fast charge on the second cycle once the BMS has confirmed cell health.

The phone won't turn on at all after the replacement battery sat in a drawer for a few months before being installed — how do I recover it?

A cell that sat in storage likely self-discharged below 2.5V per cell, triggering BMS lockout to prevent damage. Connect the phone to a wall charger — not a PC port — and leave it for 20–30 minutes without attempting to power it on. The charge IC will trickle current into the cell until voltage climbs above the BMS recovery threshold, typically around 2.8–3.0V, at which point the BMS re-initialises and normal charging resumes.

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