Key Features

• Waterproof shell makes it durable and reliable in various conditions
• Button-operated function lets you easily switch between capacity, voltage, and screen-off modes
• Includes reverse protection to help prevent damage from incorrect connections
• Shows battery capacity with signs and percentages for easy understanding
• Delivers accurate measurement of battery status with a mini tester
• Green backlight provides clear readability in low-light environments
• Automatically activates sleep mode after 10 seconds
• Tests 3.7V Lithium, Lead Acid, and Fe batteries