Wide voltage range: DC6 -63V, 12V, 34V, 36V, 48V adjustable according to battery voltage. 2 in 1 Battery Gauge: DC battery gauge can not only measure battery voltage, but also its capacity Clear and bright LCD display Digital battery capacity tester Built-in 30cm power cable, simple connection. Reverse protection design, will not burn if connect reversely. Suitable battery types: the battery finder is suitable for lithium batteries and lead acid batteries, such as Ternary lithium batteries, lead acid batteries. polymer, lithium ion batteries, storage batteries. Note: It cannot be used for Lithium Iron Phosphate batteries, 1-2 Li batteries in series and batteries over 15 Li in series . Features: Black color Backlight color: green Voltage range: 6-63V Circuit load current: 5 - 6mA Suitable for: 3-15pcs 3.7V Lithium Batteries; 12V, 24V, 36V, 48V lead-acid batteries; Fe batteries Dimensions: 61.3 x 33.3 x 13.5mm \/ 2.41inch x 1.31inch x 0.53inch Mounting hole size: 58 x 28.5mm Wire length: 30cm Adjustment instruction: 1. Long press the Set key, power on the product, enter the setting interface 2. Press the Set key to select the battery specifications (lead-acid battery (P), lithium battery (L), Fe battery (F)). 3. Short press the function key to select the number of battery strings (increasing for tuning button, decreasing for function button) 4. Long press the function key to set the mode. Package includes: 1 x Digital LCD Battery Capacity Tester