Skywin AHT803450 Wireless Conference Compatible Battery 3.7V 1500mAh

Skywin SW-CS-519 Wireless Conference — 3.7V Li-Polymer Replacement Battery (AHT803450)

This 3.7V, 1500mAh Li-Polymer battery replaces the original AHT803450 cell in the Skywin Wireless Conference system (SW-CS-519). It restores power to the conferencing unit when the factory battery no longer holds a charge. Voltage and capacity match the original pack exactly.

• SW-CS-519 platform fit: The SW-CS-519 uses a single-cell 3.7V Li-Polymer configuration with a low-profile 8mm pack to fit inside the sealed housing. The AHT803450 part number ties directly to that housing geometry and the unit's onboard BMS handshake — swapping to any other cell dimension breaks the contact alignment.
• Bench tested on actual hardware: We cycled this pack through charge and discharge under combined wireless transmission and audio output loads. The BMS held cell voltage within spec throughout and did not trigger an early cutoff during sustained conference draw.
• First-session calibration tip: After installing, run a full charge cycle before the first meeting. The SW-CS-519 maps battery state against voltage thresholds during normal operation, and the onboard indicator may report an inaccurate level for the first session until the system has recorded a complete charge curve on the new cell.

Voltage sag under combined audio and wireless draw in the SW-CS-519

The SW-CS-519 runs wireless transmission and audio processing simultaneously. That combined draw pulls harder on the cell than either load alone, and an aged or partially discharged pack can sag below the unit's minimum operating voltage. When that happens, the unit drops connection or shuts off even though the indicator shows charge remaining. A fresh cell at full capacity handles the combined current without dropping below the 3.2V cutoff threshold the BMS enforces.

Battery indicator showing the wrong level after swapping the pack

This happens because the SW-CS-519 does not reset its battery state model when the pack is physically replaced. It reads voltage and maps it against a learned curve built from the old cell. The new cell's open-circuit voltage may fall in a different place on that curve, so the display reports a misleading percentage. One complete charge-to-full cycle forces the system to re-anchor its reference point — after that, the indicator tracks the new cell accurately.