Alcatel OT-997 Replacement Battery CAB32E0000C1 3.7V 1650mAh

Alcatel OT-997 Series — 3.7V Li-ion Replacement Battery (CAB32E0000C1)

This 3.7V 1650mAh Li-ion battery replaces the original cell in the Alcatel OT-997 and OT-997D smartphones. It matches OEM part numbers CAB32E0000C1, CAB32E0002C1, TLiB32E, CAB32E0000C2, and TLiB5AF. Swap it in when the original cell no longer holds a usable charge through a normal day of calls, messages, and basic apps.

• OT-997 and OT-997D compatibility: Both handsets run the same 3.7V single-cell architecture with the same connector pinout and BMS handshake requirements. This cell satisfies both variants without any modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the OT-997 platform. The BMS accepted the cell on first insertion and the charge IC reached termination voltage cleanly without false cutoff events.
• Fuel gauge recalibration on first cycle: After installing this cell, run one complete discharge down to auto-shutdown and then charge uninterrupted to 100% before normal use. The OT-997 fuel gauge IC was calibrated to your old degraded cell — it needs one full cycle against the new cell's discharge curve to report accurate percentages.

Sudden shutdown at 20–30% on the OT-997 after a cell swap

The OT-997's fuel gauge IC holds a coulomb-counter model built from the old cell's degraded discharge curve. A fresh 1650mAh cell has a steeper voltage cliff in the low-charge region than the worn cell the phone learned from. When the modem fires up for a call or the screen brightness spikes, current draw pulls the cell voltage below the BMS cutoff threshold — even though the displayed percentage still reads 20% or higher. One full discharge-to-shutdown and uninterrupted recharge resets the counter model against the actual cell. After that cycle, the reported percentage and the real state of charge align.

OT-997 not powering on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If this battery shipped or sat on a shelf for several months, cell voltage may have dropped below 2.5V — the threshold where the BMS locks out to prevent damage. The phone will show nothing when you press the power button. Connect the handset to a wall charger rather than a USB port on a PC, since the charge IC needs a stable 5V source to push the trickle current required to recover a locked-out cell. Leave it on charge undisturbed for 20–30 minutes before attempting to power on; the BMS will release its lockout once the cell recovers to approximately 3.0V.