The TN-XBP Battery Pack is designed to significantly expand the operating capacity of the TN2000 and TN2100 Far-End Terminating Devices.  The pack consists of a carry case, battery tray and six alkaline C Cell batteries.  Slip the Terminator into the case, connect the battery pack to the external power jack, and you’re ready to go.The Battery Pack enhances Terminator operation in two areas.  In normal temperature conditions, it extends battery capacity more than 10 fold (4150 mAH @ 25°C); permitting extended testing times and reducing battery replacements. At -20°C conditions, the Terminator Pack more than doubles battery capacity.  The battery pack disconnects the Terminator’s internal battery, allowing it to function as a back-up.  The TN-XBP includes an insulated case to protect the batteries in low temperature conditions, a battery tray, six alkaline C cell batteries and a fused power cable.