REFLECTA X7-Scan 3.7V 750mAh Li-ion Compatible Battery

REFLECTA X7-Scan — 3.7V Li-ion Replacement Battery

This is a 3.7V, 750mAh (2.78Wh) Li-ion replacement battery for the REFLECTA X7-Scan portable document scanner. It fits directly into the X7-Scan battery compartment and restores full scanning function when the original cell degrades. Dimensions are 53.00 × 33.90 × 5.70mm — measure your existing cell before ordering if unsure.

• X7-Scan platform fit: The X7-Scan runs a low-draw scanning circuit at 3.7V nominal. This cell matches that voltage rail and the physical footprint of the original. No connector modification needed.
• Bench tested on actual hardware: We cycled this cell through the X7-Scan's charge and discharge circuit. The BMS accepted charge without fault, and the scanner powered through a full document batch without a mid-session cutoff.
• Fuel gauge recalibration on first use: On first use after installation, disable any fast-charge mode and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before reporting accurate percentages to the device firmware.

Why the X7-Scan shows wrong battery percentage after a cell swap

The X7-Scan uses a fuel gauge IC that builds its charge estimate from a stored discharge curve. When you fit a new cell, that curve no longer matches the old one. The gauge continues calculating against stale data, so the percentage it shows drifts from actual charge state. One full discharge down to device cutoff, followed by a complete charge to 100%, resets the coulomb counter reference. After that single cycle, the percentage readout stabilises.

X7-Scan shutting down suddenly at 20–30% remaining

This is a voltage cliff, not a capacity problem. At 20–30% state of charge, the cell voltage drops steeply under the load spike from the scanner's image sensor and processor. If the cell voltage falls below the BMS cutoff threshold — typically around 3.0V under load — the BMS trips and the device shuts down even though the gauge still shows charge remaining. A fresh cell with lower internal resistance sustains voltage through those load spikes. If shutdowns persist after fitting this replacement, check that the battery contacts are clean and seating flush — a poor contact raises effective resistance and triggers the same symptom.