Shunt-based battery capacity indicator for 8–90V packs. Real-time SOC, voltage, current, power, and remaining time — in a 58.4 × 40.4 × 9.6 mm panel meter. How it works The TC169 is a coulomb meter (battery monitor) : it measures current through a shunt and integrates charge in/out to estimate SOC more reliably than a voltmeter alone—especially on LiFePO4 flat voltage curves. Calibrate capacity once after install for best SOC stability. Specifications Brand Capdisp Model