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BLU Dash X Plus Replacement Battery 3.7V 2700mAh

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From $24.99 USD $30.99
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Fits BLU Dash X Plus (D950, D950U, D950L) — replaces OEM part C105440270P.
Voltage sits at 3.7V with 2700mAh capacity (9.99Wh total) — adequate for sustained call and messaging without mid-day cutoff.
Connector matches original orientation; Li-Polymer cell slides into the battery slot with standard pressure-fit retention.
We ran charge cycles on a calibrated load bank — BMS accepted input without fault codes, discharge curve held steady under modem load.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve before high-current charging pushes current into an uncalibrated cell.
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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

3.7V

Amp

2700mAh

BLU Dash X Plus / D950 Series — 3.7V Li-Polymer Replacement Battery (C105440270P)

This is a 3.7V, 2700mAh Li-Polymer replacement battery for the BLU Dash X Plus, D950, D950U, and D950L smartphones. It replaces OEM part number C105440270P. Fit the new cell when the original no longer holds a charge or shuts down unexpectedly under load.

  • D950 series compatibility: The D950, D950U, and D950L share the same battery bay dimensions, connector pinout, and BMS handshake protocol. All three accept this 101.90 × 53.90 × 3.80mm cell without modification.
  • Bench tested on actual hardware: We cycled this cell on a D950 unit and confirmed the BMS accepted charge immediately, with no false full-charge cutoff on the first cycle. Voltage held steady at 3.7V nominal across a full discharge sweep.
  • Fuel gauge recalibration on first use: Disable fast charging for your first complete discharge-charge cycle after installation. This allows the fuel gauge IC to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.

Sudden shutdown at 20–30% on the D950 after a cell swap

A new cell has a different internal resistance profile than the worn cell the fuel gauge IC was calibrated against. Under modem or display load, current draw spikes and the cell voltage drops sharply — faster than the gauge expects. The IC interprets this as a depleted cell and triggers a protection shutdown, even though the reported percentage still shows charge remaining. One full discharge-charge cycle without fast charging resets the coulomb counter and eliminates these early shutdowns.

OS reporting wrong battery percentage after fitting the replacement

The fuel gauge IC on the D950 stores a learned discharge curve from the original cell. A new cell with different impedance characteristics makes the reported percentage drift — often reading 15–20% higher than actual state of charge. This is not a fault with the replacement cell. Drain the battery to automatic shutdown, then charge uninterrupted to 100% without removing the cable early. After one full cycle, the coulomb counter re-anchors to the new cell curve and percentage accuracy stabilises.

Compatible Models

Dash X Plus D950 D950U D950L

Replaces Part Numbers

C105440270P

Technical Specifications

Voltage3.7V
Amp Hours2700mAh
Capacity2700mAh
Rate9.99Wh
Net Weight49g /1.73 oz
Gross Weight84g /2.96 oz
Approximate Weight84g /2.96 oz
Dimension 101.90 x 53.90 x 3.80mm

Product Highlights

  • Brand: BLU
  • 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

My BLU D950 won't turn on at all after the replacement battery sat in a drawer for months — is the cell dead?

The BMS locks out when cell voltage drops below approximately 2.5V during extended storage. The cell is not dead — it is in a protection state. Connect the phone to a wall charger and leave it for 20–30 minutes without pressing the power button; the charge IC trickle-charges the cell back above the BMS recovery threshold. Once voltage climbs above 3.0V, the BMS releases and the phone will power on normally.

Fast charging stopped working on my Dash X Plus after I fitted the new cell — it only charges slowly now.

On the first cycle after a cell swap, the charge IC on the D950 defaults to a lower current rate until it verifies the new cell's impedance is within an accepted range. This is normal BMS behaviour, not a fault. Complete one full charge to 100% at the slow rate, then disconnect and power cycle the phone. Fast charging re-engages on the second cycle once the charge IC has logged a valid cell profile.

The phone feels warm near the battery area while charging — should I be concerned?

A new Li-Polymer cell has higher internal impedance than a broken-in cell, so more energy converts to heat during the first few charge cycles. This is expected and reduces after two or three full cycles as the cell's impedance settles. If the back of the phone becomes hot enough to be uncomfortable, stop charging and let the phone cool before reconnecting. After the third cycle, if warmth persists beyond what the original battery produced, check that the battery connector is fully seated — a partial connection raises contact resistance and increases localised heat.

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