About this replacement
Archos 50F Helium Lite — 3.7V Li-ion Replacement Battery (AC50FHE)
This 3.7V Li-ion cell delivers 1600mAh (5.92Wh) to the Archos 50F Helium Lite smartphone. It replaces part numbers AC50FHE and AC50FHELI when the original cell has degraded or failed. Dimensions are 75.50 × 57.62 × 4.10mm — confirm clearance before fitting.
- 50F Helium Lite fit: The Archos 50F Helium Lite uses a fixed connector pinout tied to its charge IC. This cell matches that pinout, voltage rail, and physical footprint. No connector modification needed.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the 50F Helium Lite platform. The BMS accepted the new cell without rejection errors, and the charge IC reached cutoff cleanly at 4.2V.
- Fuel gauge recalibration on first use: After fitting this cell, disable fast charging if your variant supports it, then run one full discharge down to automatic shutdown followed by a complete charge. This lets the fuel gauge IC map the new discharge curve before drawing high current into an uncalibrated cell.
Why the 50F Helium Lite reports wrong battery percentage after a cell swap
The fuel gauge IC on this phone stores a learned discharge curve from the original cell. When you install a new cell, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The IC reads voltage and translates it to a percentage using old data, so the number on screen drifts from reality. One complete discharge-to-shutdown followed by a full charge to 100% forces the coulomb counter to reset and relearn against the new cell.
Sudden shutdown at 20–30% remaining on the replacement cell
This happens when the cell voltage drops below the load threshold of the modem or display before the fuel gauge reaches zero. Budget smartphone SoCs pull current spikes during LTE activity, and a cell that hasn't been through a calibration cycle hits a voltage cliff sooner than the IC expects. The phone interprets this as a hard undervoltage event and shuts down even though the gauge still shows charge. Run one full discharge cycle and keep the cell above 3.5V under load — if the phone reaches 3.2V at rest after shutdown, the calibration cycle has not completed yet.