Polycom PWM-10T Replacement Battery 3.7V 1100mAh

Polycom PWM-10T / QDX-6000 — 3.7V Li-ion Replacement Battery (2200-32400-001)

This is a 3.7V 1100mAh Li-ion replacement cell for the Polycom PWM-10T wireless microphone transmitter, QDX-6000, and Wireless Soundstation PWM-10. At 54.00 × 34.20 × 5.70mm, it matches the OEM form factor for direct installation. Capacity is 4.07Wh — identical to the original specification.

• PWM-10T, QDX-6000, and Wireless Soundstation PWM-10 compatibility: All three units share the same battery bay dimensions, 3.7V nominal cell voltage, and connector orientation — which is why they run the same OEM part number (2200-32400-001). The BMS handshake on each platform monitors cell voltage at the same cutoff threshold.
• Bench tested on actual hardware: We cycled this cell through charge and load discharge on the PWM-10T transmitter body. The BMS held cutoff at the expected low-voltage threshold and the charge circuit accepted the cell without fault codes or interruption.
• Wireless microphone transmitter storage tip: If the transmitter sits unused between events for several weeks, power it on and run the battery down to roughly 20% before storing — leaving it at full charge in a warm equipment bag accelerates cell degradation faster than regular use does.

Why the PWM-10T cuts out mid-transmission even on a full charge

The PWM-10T transmitter draws a brief current spike each time the RF output ramps up. On a degraded cell, internal resistance rises enough that this spike causes a momentary voltage sag past the BMS low-voltage trip point — the unit cuts out even though the fuel gauge still reads high. The issue isn't capacity; it's the cell's ability to deliver current without dropping voltage. A fresh 1100mAh cell with low internal resistance handles the RF spike without tripping the BMS. If the transmitter is cutting out mid-session, check cell resistance first — not remaining capacity.

PWM-10T showing a solid charge indicator but powering off after light use

This is a fuel gauge drift symptom, not a hardware fault. It happens when the transmitter is regularly topped off from 60–80% without ever being discharged below 20% — the battery management IC loses calibration and reports inaccurate state of charge. The fix is a full conditioning cycle: run the transmitter down until it shuts off from depletion, then charge it uninterrupted to 100%. After one full cycle, the fuel gauge recalibrates and the charge indicator reflects actual cell voltage again.