Battery Power Detector Monitor DC5-30V 12V 24V Lithium Lead-Acid Batteries Tester LED Display Panel monitor tester for lithium lead-acid batteriesFeatures:Easy to operate and compact material, in use.Please do not use this product outdoors. Not waterproof for DC5-30V 12V 24V Lithium Lead-Acid batteries.Specifications:PlasticsSize: Approx. 46x15x3mm/1.81x0.59x0.12inWorking Current:<10mADisplay Mode: LED Working Voltage: DC5V-30VPackage Includes:1x Battery MeterNote:Please do not the operating voltage, which will damage the product.Function setting description: 1. Press and hold the key for 2 seconds to enter the setting