Orange Dixo Replacement Battery 3.7V 1200mAh Li-ion

Orange Dixo — 3.7V Li-ion Replacement Battery

This is a 3.7V Li-ion cell rated at 1200mAh (4.44Wh), built to replace the original battery in the Orange Dixo smartphone. It fits the Dixo directly and restores power for calls, messaging, and everyday app use. Voltage and capacity match the factory spec — no modifications needed.

• Orange Dixo fit: The Dixo runs a single-cell 3.7V Li-ion pack with a compact footprint — 53.18 x 34.00 x 6.80mm. This cell matches that envelope exactly, so the connector seats and the BMS handshake completes without fault codes.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench, confirming BMS cutoff triggered correctly at both the low-voltage floor and full-charge ceiling. Charge acceptance was normal across the full cycle.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This gives the fuel gauge IC time to recalibrate its discharge curve against the new cell before high-current charging starts pushing current into an uncalibrated state.

Why the Dixo reports wrong battery percentage after a cell swap

The Dixo's fuel gauge IC stores a discharge curve built from the original cell's behaviour over many cycles. When a new cell goes in, the IC still references that old curve — so the percentage shown on screen doesn't match actual cell state. This causes readings that drift, jump, or plateau incorrectly. One full discharge from 100% down to automatic shutdown, followed by a complete charge to 100%, forces the IC to remap the curve against the new cell. After that cycle, percentage reporting stabilises.

Sudden shutdown at 20–30% remaining on the replacement cell

This happens because the modem or display draws a current spike the new cell temporarily can't sustain — voltage sags below the BMS cutoff threshold before the fuel gauge registers low charge. It's a voltage cliff issue, not a capacity fault. It appears most often in the first few cycles before the cell's internal resistance stabilises with use. Run two or three full discharge-charge cycles without fast charging, then check whether the shutdowns stop. If the problem persists beyond three cycles, verify the battery terminal voltage under screen-on load reads above 3.4V.