Cricket Outlast 5G Compatible Battery BL-A67CT 3.85V 4000mAh
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Cricket Outlast 5G Compatible Battery BL-A67CT 3.85V 4000mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Cricket Outlast 5G Compatible Battery BL-A67CT 3.85V 4000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.85V
Amp
4000mAh
Cricket Outlast 5G — 3.85V Li-Polymer Replacement Battery (BL-A67CT)
This is a 3.85V, 4000mAh Li-Polymer replacement battery for the Cricket Outlast 5G (model SN509C). It uses OEM part number BL-A67CT and fits directly into the Outlast 5G chassis without modification. Capacity matches the factory cell at 15.4Wh.
- Outlast 5G and SN509C compatibility: Both model references share the same physical footprint, connector pinout, and BMS handshake requirements — the BL-A67CT part number covers both. The charge IC on the Outlast 5G expects a 4.40V charge cutoff, which this cell supports.
- Bench tested on actual hardware: We cycled this cell through the Outlast 5G charge IC and confirmed BMS communication, charge termination at 4.40V, and correct cell identification. The protection circuit tripped correctly at low-voltage cutoff during our discharge sweep.
- Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one full discharge-charge cycle at standard rate. The Outlast 5G fuel gauge IC calibrates its coulomb counter against the new cell's discharge curve — skipping this step causes the percentage to read inaccurately until the IC self-corrects.
Sudden shutdown at 20–30% on the replacement cell
This happens when the fuel gauge IC is still mapped to the old cell's discharge curve. The new cell hits a voltage cliff under modem or screen load — the phone shuts down even though the reported percentage looks safe. The fuel gauge has not yet learned where the new cell's actual low-voltage threshold sits. One full discharge to auto-off, followed by a complete charge, forces the IC to remap its curve to the new cell.
USB-PD fast charge not accepted on the first cycle after installation
On the first charge cycle, the Outlast 5G charge IC may default to trickle or standard current rather than fast charge. The new BMS needs to complete one full handshake cycle with the phone's charge IC before the fast-charge protocol is accepted. This is not a fault — it resolves after the first complete charge. If fast charging still does not engage after two full cycles, confirm the charger output is USB-PD compliant and check the USB-C port for debris.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Cricket
- 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
Why does my Cricket Outlast 5G shut off at 25% after putting in the new battery?
The fuel gauge IC is still using the old cell's discharge map. When the new cell's voltage drops sharply under 5G modem or screen load, the phone interprets it as a critical low-voltage event and shuts down — even though the displayed percentage looks fine. Run one complete discharge to auto-off, then charge to 100% without fast charging. After that cycle, the coulomb counter remaps to the new cell and the shutdowns stop.
The battery percentage is jumping around erratically — 60% one minute, 45% the next. What's wrong?
The fuel gauge IC on the Outlast 5G recalibrates its state-of-charge estimate against the cell it learned from originally. A new cell has a different internal impedance profile, so the IC's voltage-to-percentage lookup is temporarily off. This causes erratic percentage jumps, especially between 30% and 70% where the discharge curve is flattest. One full uninterrupted discharge-charge cycle at standard current — not fast charge — lets the IC settle on the correct curve.
My Outlast 5G won't power on at all after the battery sat unused for a few months. Is the cell dead?
Likely not dead — the BMS has entered lockout because the cell self-discharged below 2.5V during storage. The protection circuit blocks current flow to prevent damage at that voltage. Plug into a wall charger (not a PC port) and leave it connected for 20–30 minutes without pressing the power button. The charge IC will apply a recovery trickle current to bring the cell above the BMS re-enable threshold; the screen should respond once the cell clears 3.0V.
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