FLUKE NETWORKS' Fluke BT521 Advanced Battery Analyzer. Includes:brul liBattery analyzer/li li4-wire test pin (set)/li liBTL10 Basic Test Lead (set)/li liTL175 TwistGuard(TM) Test Leads with adapter/li liBTL21 Intelligent Test Probe Set, with extender and temperature sensor/li lii410 AC/DC Current Clamp/li liBP500 lithium-ion battery/li liBC500 AC charger/li limini-USB cable/li liShoulder strap/li liBelt strap/li liMagnetic hanging strap/li liFlukeView(R) Battery Management Software/li liSoft carrying case/li liSpare fuses - two (2)/li liBattery tags/li liZero Ohm Calibration Resistor/li/ul