This product is a high-precision current collection type battery energy meter (also known as a coulomb meter), which can accurately detect real-time parameters such as voltage, current, power, true capacity, and remaining usage time of the battery pack, allowing you to understand the working status of the battery at any time. Outdoor power supplies, emergency power supplies, energy storage power supplies, measuring equipment, medical equipment, various inst ents and meters that can be used battery powered devices. Although the price of TC147 coulomb meter is slightly higher than some ordinary power monitors, its high precision, versatility, wide applicability, and convenient installation and user experience make it a cost-effective power monitoring device. One investment, long-term benefits, making your battery usage more efficient, safe, and reliable. Features: Support custom low capacity alarm values Support zero capacity/full capacity voltage setting Support brightness adjustment function (automatic/manual) Support shutdown voltage setting Specification: Maximum current resolution: 1mA (0.001A) Applicable voltage range: 6-60V Display screen: 320 x 172 pixel high color gamut Working power consumption: 180~260mW Sleep power consumption: 5.0~50mW Applicable range of current: CS30:0-30A Capacity detection range: 0.1-1000Ah Color: Gray Material: ABS Please note: Product upgrade, delivery does not include the blue rubber on the copper nose Package Contents: 1 x High Precision Coulomb Counter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.