DROK Digital Coulombmeter Battery Monitor 8–100V 100A — 2.4" Color LCD, Amp-Hour & Power Tracking

DROK Digital Multimeter is a compact coulombmeter that measures voltage, current, power and accumulated capacity for 8–100V battery systems with a bright color LCD and programmable alarms.

This DROK DC 8–100V coulombmeter combines a wide voltage range, 100A current sensing and a large 2.4" color display to track voltage, amperage, wattage and amp-hours in real time. Built for battery systems from 12V through larger multi-battery arrays, it records cumulative charge and provides configurable alerts, backlight options and power-saving screen behaviors so you can monitor charging and discharging precisely.

How accurate and fast is the DROK battery monitor?

The meter samples measurements at up to 20 times per second and uses precision circuitry to keep readings stable for voltage, current and power. Accuracy figures provide a practical balance for system monitoring rather than laboratory-grade metrology.

• Voltage range: 8–100V with ±1% + 2 digits precision
• Current range: 0.05–100A with ±0.5% + 2 digits precision
• Sampling speed: 20 measurements per second for responsive updates
• Power handling: up to 50 kW for instantaneous power readouts

What display, alerts and custom settings can I control?

The 2.4-inch high‑contrast color LCD shows multiple parameters simultaneously and supports adjustable backlight and alarm behaviors. You can choose screen colors, set auto-off conditions, enable flashing backlight warnings and configure language and communication address.

• Backlight brightness adjustable across 11 levels (0–10)
• Two screen color modes: black-and-white or full color
• Auto-off by elapsed time or low-current threshold to save energy
• Low-voltage (LVP), over-voltage (OVP) and low-capacity alarms with flashing backlight option

How does it track battery capacity and manage charge/discharge data?

The coulombmeter integrates current over time to report amp-hours and remaining capacity percentage. You can program the battery’s total capacity, set available-percentage thresholds and clear baseline current for more accurate cumulative readings.

• Capacity range: 0.1–99,999 AH for long-term monitoring
• Set total battery capacity and available capacity percentage (BAT, BPC)
• CLR and PAI functions to clear no-load current and set current-to-zero thresholds
• OVP will auto-fill capacity when voltage indicates a full charge

Who is this for? The DROK coulombmeter suits DIYers, vanlifers, RV and boat owners, off-grid solar installers and anyone who needs a clear, configurable view of battery state-of-charge and instantaneous system parameters. If you need a rugged inline monitor that mounts neatly and reports voltage, current, power and accumulated amp-hours with alarms and a bright, readable screen, this device provides an affordable, programmable solution backed by a one-year warranty.