Cameron Sino Replacement Battery KX-TU446 900mAh 3.7V

Compatible replacement battery

The Cameron Sino KX-TU446 battery replaces the original Panasonic 514047AR cell in models KX-TU446, KX-TU446/4, KX-TU456, KX-TU456EXCE, KX-TU466EXBE and KX-TU466EXWE. It is built for owners of those specific cordless handsets who need a direct-fit spare. The fully decoded chip communicates with the phone exactly like the factory unit. Buyers with other Panasonic DECT models or non-Panasonic handsets cannot use this pack.

900 mAh capacity and runtime

Rated at 900 mAh and 3.33 Wh, the cell delivers the same nominal energy as the original battery. It comfortably powers normal talk and standby cycles on the listed handsets. Runtime will fall short for users who demand extended heavy use between charges or who operate in areas with weak signal that forces the radio to transmit at higher power. The pack reaches its full capacity after two or three complete charge and discharge cycles.

Thermals, noise and power draw

The lithium-ion chemistry operates silently and generates negligible heat during typical charging and discharging. No active cooling is required and the unit adds only 21.0 g to the handset. Protection circuitry guards against overcharge, over-discharge, over-voltage and short-circuit conditions. Do not store the battery above 60 °C or 140 °F and never disassemble or expose it to fire or water.