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SCP-72LBPS Kyocera DuraForce Pro 2 Replacement Battery 3.8V

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From $29.99 USD $36.99
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Fits Kyocera DuraForce Pro 2 models E6910 and E6920, replacing OEM part SCP-72LBPS and 5AAXBT122JAA.
This 3.8V, 3150mAh lithium-polymer cell restores full operational capacity to the DuraForce Pro 2 smartphone.
Connector slides into the factory battery slot with locking tab oriented toward the top contact post.
We bench-tested this cell in the E6910 — BMS accepted the new pack on insertion, fuel gauge IC registered full capacity without protective delay.
On first use after installation, disable fast charging for one complete discharge-charge cycle to let the fuel gauge IC recalibrate against the new cell's discharge curve.
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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

3.8V

Amp

3150mAh

Kyocera DuraForce Pro 2 — 3.8V Li-Polymer Replacement Battery (SCP-72LBPS)

This 3.8V, 3150mAh lithium-polymer battery replaces the original SCP-72LBPS cell in the Kyocera DuraForce Pro 2 smartphone (E6910, E6920). It matches the OEM voltage, capacity, and connector footprint for the DuraForce Pro 2 platform. Dimensions are 83.90 × 55.20 × 5.20mm — confirm against your original before installation.

  • E6910 and E6920 platform fit: Both the E6910 and E6920 share the same battery bay geometry, voltage rail, and BMS handshake protocol — one cell covers both variants without any modification to the connector or flex cable routing.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a DuraForce Pro 2 unit. The BMS accepted the cell, the charge IC negotiated correctly, and the protection circuit triggered at expected cutoff thresholds with no false trips.
  • First-cycle fuel gauge recalibration: After installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. The fuel gauge IC is still calibrated to the old cell's discharge curve — skipping this step causes the OS to misread state-of-charge on the new cell until the coulomb counter resets.

Sudden shutdown at 20–30% on the DuraForce Pro 2 after a cell swap

The DuraForce Pro 2's modem and display draw significant current spikes during active use. A new cell with an uncalibrated fuel gauge IC causes the OS to misread the remaining charge state. When actual cell voltage drops below the BMS protection threshold under load — typically around 3.4–3.5V — the phone shuts down even though the percentage display still reads 20–30%. One full slow-charge discharge cycle lets the coulomb counter map the new cell's actual discharge curve and eliminates the premature cutoff.

DuraForce Pro 2 not powering on after the replacement battery sat in storage

Li-polymer cells self-discharge during storage. If voltage drops below 2.5V per cell, the BMS enters lockout mode and blocks current flow entirely — the phone shows nothing on screen and does not respond to the power button. Connect the device to a wall charger (not a PC USB port) and leave it for 15–20 minutes without pressing anything. The charge IC applies a low-current trickle to bring the cell above the BMS recovery threshold, typically around 2.9V, at which point normal charging resumes and the phone powers on.

Compatible Models

DuraForce Pro 2 E6910 E6920

Replaces Part Numbers

SCP-72LBPS 5AAXBT122JAA

Technical Specifications

Voltage3.8V
Amp Hours3150mAh
Capacity3150mAh
Rate11.97Wh
Net Weight46.2g /1.63 oz
Gross Weight96.2g /3.39 oz
Approximate Weight96.2g /3.39 oz
Dimension 83.90 x 55.20 x 5.20mm

Product Highlights

  • Brand: Kyocera
  • 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

Why does my DuraForce Pro 2 show 25% battery and then just shut off with no warning?

This is a voltage cliff issue. The fuel gauge IC is still reading the old cell's discharge curve, so the percentage shown doesn't match the new cell's actual state-of-charge. Under modem or screen load, the cell voltage collapses past the BMS cutoff threshold while the OS still reports 25% remaining. Run one complete discharge down to auto-shutdown followed by a full slow charge — the coulomb counter will remap to the new cell and the shutdowns stop.

Fast charging stopped working on my DuraForce Pro 2 right after I put in the new battery — is something wrong?

Nothing is wrong. On the first cycle after a cell swap, the USB-PD negotiation layer on the new BMS hasn't completed its handshake with the phone's charge IC, so the device falls back to standard 5V charging as a precaution. Complete one full standard-rate charge cycle first. Fast charging resumes on the second cycle once the BMS and charge IC have exchanged protocol data and confirmed the cell is within safe parameters.

My DuraForce Pro 2 battery percentage keeps jumping around — goes from 60% to 45% in seconds without much use. What's happening?

The fuel gauge IC uses a coulomb counter calibrated to the original cell's internal resistance and discharge profile. A new cell has different impedance characteristics, so the counter miscalculates remaining capacity and the percentage jumps erratically. This resolves itself after two to three full discharge-charge cycles at standard rate, which gives the IC enough data points to build an accurate model of the new cell. After the third full cycle, percentage readings stabilise at approximately ±3%.

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