Digital LED DC Voltmeter Ammeter 100V 100A

The Digital LED DC Voltmeter Ammeter 100V 100A is a dual-display panel meter that simultaneously shows DC voltage from 0 to 100V and DC current from 0 to 100A on two separate LED readouts with ±1% measurement accuracy and a 500ms display refresh rate. The digital voltmeter ammeter operates from a separate 4.5V to 30V DC power supply input at under 60mA, and the volt ampere meter installs directly into panel cutouts on battery enclosures, power supply housings, solar charge controller panels, and DC load test benches for continuous real-time monitoring.

The dc ampere meter digital current measurement circuit requires an external shunt resistor — the 100A current does not flow through the meter’s internal circuitry directly. Instead, a low-resistance shunt is wired in series with the load, and the small millivolt voltage drop across the shunt is measured by the meter and converted to amperes. This shunt-based architecture is the reason this 100v 100a voltmeter ammeter can measure large currents without internal heat dissipation or thick high-current wiring inside the display module.

The dc ammeter separate power supply input means the meter continues displaying readings even when the monitored circuit is at zero volts — useful for battery discharge monitoring where the meter must remain powered from an auxiliary source as the main battery approaches zero. One practical trade-off: the ±1% accuracy means a 100A reading carries a ±1A error — for precision current measurement in calibration or research applications, a higher-accuracy bench ammeter is more appropriate. Available from StemVolt, this meter is ideal for engineers monitoring DC power in battery systems and practical high-current embedded electronics projects.

Related Products:

• Checkout the LED Display Digital DC Voltmeter

Features:

• Dual LED display shows voltage and current simultaneously at all times
• 0-100V and 0-100A measurement covers most DC battery and solar builds
• ±1% accuracy with 500ms refresh suits real-time power monitoring builds
• Separate 4.5V-30V supply keeps display active during monitored circuit discharge
• Shunt-based current measurement prevents high-current internal heat dissipation

Technical specifications:

 Applications:

• Digital Voltmeter Ammeter used for solar panel battery charge monitor
• College project uses dc ampere meter digital for DC power display build
• EV battery pack uses 100v 100a voltmeter ammeter for discharge monitoring
• Power supply test bench uses dc ammeter for load current verification
• DC motor driver uses volt ampere meter for current draw monitoring

Package includes:

• 1 x Digital LED DC Voltmeter Ammeter 100V 100A