The Lectrosonics BATTSLED Universal Power Supply Adapter provides extended operating time and serves as a backup power supply for transmitters and receivers. Common "L" and "M" style video camera rechargeable batteries are retained by spring tabs in the bottom plate. The power output is a threaded locking coaxial connector that is used on many Lectrosonics products. The connections are fused at 500mA and diode protected against reversed polarity. The unit is constructed of machined aluminum and stainless steel to provide the ruggedness needed for field production. A Velcro swatch is included for mounting the adapter on a flat surface.