AHB83450 Opus Click Replacement Battery 3.7V 1500mAh

Opus Click Series — 3.7V Li-Polymer Replacement Battery (AHB83450)

This 3.7V, 1500mAh Li-Polymer cell replaces the original AHB83450 battery in the Opus Click, Plus, Player, and Touch portable media players. It fits the compact 52.30 × 34.00 × 8.50mm battery bay and restores full audio playback capacity. Capacity listed is from product data — 5.55Wh total energy.

• Click, Plus, Player, and Touch compatibility: These four models share the same 3.7V single-cell architecture, identical connector pinout, and the same BMS voltage thresholds — that is why one cell fits all four. No rewiring or adapter needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Click platform. The BMS accepted the cell cleanly, hit the 4.2V charge cutoff correctly, and the low-voltage cutoff triggered at the expected 3.0V floor with no false trips.
• First-use charge after cell swap: After fitting a new cell, place the player on charge before powering it on. Media players in this class often enter deep-discharge protection after storage, and the device needs a slow trickle charge to clear that state before it will accept a normal charge current.

Battery percentage jumping after cell swap on the Opus Click

After fitting a new Li-Polymer cell, the Opus Click's fuel gauge reads from a calibration table built around the old cell's discharge curve. The new cell has a slightly different internal resistance profile, so the voltage-threshold indicator misreads state of charge early on. This shows up as the percentage jumping — often dropping suddenly from 40% to 5% or climbing unexpectedly. Run two or three full charge-to-cutoff cycles and the gauge recalibrates to the new cell's actual curve.

Playback cutting out before the battery indicator shows empty

As a Li-Polymer cell approaches the bottom of its discharge curve, internal resistance rises sharply. The audio amplifier in the Opus Click draws a short burst of current on loud passages, and that current spike causes the cell voltage to sag below the BMS cutoff threshold — even when the indicator still shows charge remaining. The BMS reads that sag as a fault and shuts down the output to protect the cell. If this happens, connect the charger immediately and allow the cell to recover to at least 3.6V before resuming playback.