Model Number:Battery Capacity Meter / Battery tester Type:Electronic Device Battery Tester Lead acid battery P::Measurement: DC12V, 36V, 48V, 60V, 72V, 84V (power off memory) Triple lithium battery L::Measure from L03 string to L20 string (power off memory) Lithium iron battery F::Measure from F03 string to F23 string (power off memory) Custom settings for high and low voltage range::DC8-100V