Making Adventure More Affordable & Accessible for 4WD Enthusiasts! Battery Monitor DisplayThunder’s easy to install Battery Monitor Display allows you to monitor you your battery percentage, current draw, current inwards and wattage usage in one compact and easily accessible screen. Designed to work with most 12 Volt Gel, Lead Acid, Lithium, AGM Deep Cycle, Lithium Ion phosphate and Calcium batteries. Specifications: Operating Voltage: 8 – 60VDC Working Power: 8 – 10mA Standby Power Consumption: 0.50 – 0.8mA Backlit Light Current: 40 – 50mA Battery Capacity: 0.1 – 590Ah Built-in Current: 5-10A Shunt Operating Current: 150A Outside Unit Diameter (W x H x D): 60 x 40 x 10mm Display Window Size (W x H): 32 x 23mm External Dimensions of Shunt (W x H x D): 23 x 18 x 5mm