Volt Amp Meter, DC 5-100V 100A Waterproof Dual Display Current Voltage Meter, Digital Mini Ammeter Voltmeter Gauge with Hall Effect Sensor Current Transformer

J'ai installé 2 de ces lecteurs pour surveiller l'état des 2 batterie de mon vehicule, une pour la batterie principale et l'autre pour la batterie auxiliere. J'en suis entièrement satisfait.

I've purchased several of these type meters. This one was different in a good way. First, IN THE BOX, it arrived with a single page, color diagram showing how to connect the meter, how to reset the meter and how to interpret the current (when neg flow). The text was in good sentences. The opening was large enough to pass over a 1/0 wire AND the lug. Out of the box, the current reading and voltage reading agreed with my calibrated meter. I'm using it on a 48V solar system to track inverter charge current and battery voltage (independent of the inverter) and its working great. No need for a separate 12V supply, it works directly off the range of voltage (45V to 58V).

I’m using it to monitor 12v battery, voltage is as my fluke meter +/- 50mV. My load is often around 0 to 7A, amp is as my fluke meter +/- 100mA

Accurate and easy to install, just hook it to your battery and run your hot cable through the sensor. I use it on my motorcycle and it clearly shows my voltage and draw/charging status. Went a little bonkers when I drove through a downpour but started working again once it dried out. If you have any questions about your charging system get this meter!

Need to be really good at stripping insulation off VERY small wires. it works really good and accurate. Also soldering the tiny wires is a chore, but can be done.