TLp030F1 Alcatel One Touch Idol 4S Compatible Battery 3.84V 3000mAh

Alcatel One Touch Idol 4S — 3.84V Li-Polymer Replacement Battery (TLp030F1)

This is a 3.84V, 3000mAh Li-Polymer cell that replaces the original TLp030F1 battery in the Alcatel One Touch Idol 4S and One Touch Idol 4S LTE smartphones. It fits OT-6070 and OT-6070Y variants and matches the physical dimensions of the factory cell at 76.60 × 66.40 × 3.60mm. Capacity is 11.52Wh, identical to the original specification.

• OT-6070 series compatibility: The OT-6070 and OT-6070Y share the same battery bay, connector pinout, and BMS handshake protocol — one cell covers both. Alternate OEM part numbers TLp030F2, CAC3000020C1, and CAC3000028C2 all map to the same physical and electrical specification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on OT-6070 hardware. The BMS accepted the cell without error flags, charge termination triggered correctly at full voltage, and the protection circuit responded normally to load spikes from the modem and display.
• Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. The fuel gauge IC in the OT-6070 calibrates its coulomb counter against the discharge curve — skipping this step leaves the gauge reading from the old cell's reference data, causing erratic percentage jumps for several days.

Sudden shutdown at 20–30% on the Idol 4S after a cell swap

This is a voltage cliff problem, not a capacity problem. When the modem transmits or the display peaks, current draw spikes sharply. A new cell that hasn't been cycled yet has a slightly higher internal impedance than a broken-in cell, and that impedance causes a voltage dip the BMS reads as a low-voltage cutoff event. The phone shuts off even though the fuel gauge still shows charge remaining. Run two or three full discharge-charge cycles and the impedance drops — the shutdowns stop.

USB fast charge not working on the first cycle after replacement

On the first charge after installation, the charge IC may not negotiate the fast-charge protocol with the new BMS. The device defaults to standard 5V charging as a safe fallback. This is normal — the BMS and charge IC exchange handshake data over the first full cycle before fast-charge current is accepted. Connect the phone to a compatible charger, let it complete one full standard-rate charge, then fast charging should activate on the next session. If it doesn't after two cycles, check that the charger output is at least 9V/1.67A.