Alcatel OT-7024 Replacement Battery TLp018B2 3.8V 1800mAh

Alcatel OT-7024 / One Touch 7024 Series — 3.8V Li-Polymer Replacement Battery (TLp018B2)

This 3.8V, 1800mAh (6.84Wh) lithium-polymer cell replaces the original TLp018B2 in the Alcatel OT-7024, OT-7024W, One Touch 7024, and One Touch 7024W. It fits the same pocket in the rear housing and connects to the same three-pin flex connector. Cross-compatible OEM references include TLp018B1, TLp018B4, and CAC1800008C2.

• OT-7024 and 7024W platform fit: Both variants share the same PCB layout, battery bay dimensions (56.53 × 56.60 × 4.21mm), and BMS handshake protocol. One cell fits both without any modification to the housing or connector.
• Bench tested on actual hardware: We ran this cell through full charge and load cycles on the OT-7024 platform. The BMS accepted the charge IC handshake on the first cycle, thermal response stayed within normal range, and the protection circuit tripped correctly at low-voltage cutoff.
• Fuel gauge recalibration on first use: After installation, disable any fast-charge mode and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins on an uncalibrated cell.

Sudden shutdown at 20–30% on the OT-7024 after a cell swap

The OT-7024 uses a coulomb-counter fuel gauge that was calibrated to the original cell's internal resistance profile. A new cell has a different resistance curve, so the gauge underestimates remaining capacity and triggers a low-voltage shutdown before the display reads zero. Under modem or screen load, the cell voltage briefly dips below the system's cutoff threshold even when the gauge shows charge remaining. One full discharge-to-shutdown followed by an uninterrupted charge to 100% resets the coulomb counter to the new cell's curve. After that cycle, the reported percentage will track actual voltage accurately.

OT-7024 not powering on after the replacement battery sat in storage

Li-polymer cells self-discharge during storage, and if the cell voltage dropped below roughly 2.5V, the BMS will have entered lockout mode to prevent damage. The phone will show nothing on screen — no charge indicator, no vibration. Connect the phone to a wall charger (not a PC port) and leave it undisturbed for 15–20 minutes. The charge IC will trickle current into the cell at a safe rate until voltage rises above the BMS re-enable threshold, at which point normal charging resumes. If the screen still shows no response after 30 minutes on a wall charger, check that the flex connector is fully seated.