â·ÃÊͺ¶ÒÁÃÒ¤Ò The Battery Tester is designed for measuring the internal resistance and output voltage of batteries including lead storage cell, nickel-cadmium battery, lithium-ion battery and nickelmetal hydride battery. BT100: Battery Capacity Tester Checks battery condition in seconds while the battery is in service Features: On-line testing without shutting down battery Built-in datalogger stores up to 999 tests Simultaneously measures battery resistance and voltage PC software for downloading readings to a PC Specifications: Resistance Ranges 40mΩ, 400mΩ, 4Ω, 40Ω Voltage Ranges 4V, 40V Maximum Input Voltage 50VDC Power 6 AAA batteries Battery Life 7 hours Dimensions 9.75" x 4" x 1.75" (250 x 100 x 45 mm) Weight 17.5oz (500g) Bettery BT100 Extech ẵàµÍÃÕè