Aligator C200 Replacement Battery 3.7V 1300mAh Li-ion

Aligator C200 — 3.7V Li-ion 1300mAh Replacement Battery

This is a 3.7V, 1300mAh Li-ion cell built to restore power to the Aligator C200 mobile phone. It fits the C200 directly and matches the original cell's voltage and form factor. Capacity is rated at 1300mAh (4.81Wh) as measured from the product specification.

• C200 platform fit: The C200 uses a compact cell bay with specific contact placement and a low-profile 5.75mm depth. This cell measures 60.00 x 38.12 x 5.75mm — matching that bay geometry so the back cover seats flush and the contacts align without bending.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a C200 unit. The BMS accepted the charge IC handshake on the first cycle, held voltage above 3.5V through the mid-discharge range, and did not trigger a protection cutoff under normal screen-on load.
• Fuel gauge recalibration on first cycle: After installing this cell, run one full discharge to approximately 5–10% and then charge uninterrupted to 100% before enabling fast charging. The C200's fuel gauge IC maps its percentage readings against a learned discharge curve — skipping this step can leave the coulomb counter calibrated to the old cell's degraded profile.

Sudden shutdown at 20–30% on the C200 after a cell swap

The C200's processor and modem draw current in short, sharp bursts — especially during calls or screen wake events. A new cell with an uncalibrated fuel gauge IC can hit a voltage cliff where the reported percentage looks healthy but the cell cannot sustain voltage under that burst load. The phone's PMIC detects the sag, interprets it as a critical undervoltage event, and shuts down immediately. One full discharge-charge cycle lets the coulomb counter reset its endpoint references to the new cell's actual discharge curve, which eliminates most of these false shutdowns.

C200 not powering on after the replacement battery sat in storage

Li-ion cells self-discharge during storage. If this cell dropped below approximately 2.5V before installation, the BMS enters lockout mode to prevent further discharge damage and blocks normal charge current. The C200's charge IC may show no activity and the phone will not respond to the power button. Connect the phone to a charger and leave it untouched for 15–20 minutes — most BMS circuits accept a trickle pre-charge at this point to recover cell voltage above the lockout threshold before allowing full charge current to resume.