This is the Futaba BR-3000 battery checker.
Includes: Futaba BR-3000 Battery Checker
Note: The BR-3000 Battery Checker can only be used with the battery packs listed above. It cannot handle batteries of other cell sizes and types. The checker display is based on voltage. Since the voltage changes with the individual battery and the ambient temperature, use the remaining capacity display as a criteria only.
Voltage display error: ±1.5%
Dimensions: 3.3x2.5x0.6" (85x63x15mm) excluding projecting parts
Weight: 1.8oz (52.6g)
Total voltage: (Ni type) 4.0~17V, (Li type) 5~34V
Cell voltage: (Li type) 1.1~4.9V
Operating temperature: -10~+45ºC
Storage temperature: -20~+60ºC