Features: With display switch, which helps save battery power. Designed to extend service life with non-continuous display. Dual display for electricity and voltage for quick reading. Clear and intuitive display interface. Upward 8-color bar indicates battery power; downward voltage meter displays battery voltage. Voltmeter features automatic decimal point shift for improved accuracy. Compatible with 12V lead-acid batteries and 4-series lithium iron phosphate batteries. Battery voltage indication: - Greater than 9.7V: 1 bar - Greater than 10.2V: 2 bars - Greater than 10.7V: 3 bars - Greater than 11.1V: 4 bars - Greater than 11.7V: 5 bars - Greater than 12.2V: 6 bars - Greater than 12.6V: 7 bars - Greater than 13.0V: 8 bars Specifications: - 8-bar battery indicator with approximate levels: 10%, 25%, 40%, 50%, 60%, 75%, 90% - Voltmeter accuracy: approximately 3% - Working temperature: -10C to +65C - Working humidity: 10% to 80% (non-condensing) - Housing material: ABS - Panel size: 48x29mm (1.89x1.14 inches) - Color: Black - LED display color: Red - Quantity: 1 piece Notes: 1. Please allow 0-1cm error due to manual measurement. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual item color may vary slightly from the image. Package includes: 1 x Battery Capacity Indicator