DC 5-100V 100A Volt Amp Meter with Hall Effect Current Sensor

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).

Amazing device. I bought one to test, then bought six more. I attached one per battery in my battery bank so I can easily tell if a terminal fuse is blown and I can see if the amp pull from each battery shows the bank is balanced. I was expecting the accuracy to be just ok, but I was wrong. It is almost perfect. Every battery shows the same voltage value - which they should since they are interconnected, but that shows each device is calibrated correctly at the factory. The current readings are close to what my Victron BMV reports. It's hard to find a device like this that works for DC and up to 100 amps. I'm going to buy an eight to show the current being pulled from the alternator. Build quality is excellent. The devices look nice and they include an extension for the current clamp. I just wish there was a circular version that fit in the standard 1" hole.

VERY ACCURATE. Identical results as my Victron. Average volts 48 to 54 and max 28 amps. Only issue is one of the LEDs is failing. Connected less than a week.

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!

Only had it installed for a day now on my lawnmower to find out why my battery is always dead. Very easy to install and wire. I had to reverse the amp pickup on the battery cable, it was showing negative amps, the marking on the pickup was marked wrong. Not a big deal. It works very well. The red volt display is a little hard to read but I'm sure it wasn't designed to be used outside in bright sunlight.

Installed this on rebuilding a 40 year-old dumb car 6 amp car battery charger, the meter shows the battery voltage upon hooking it up to battery without turning on power . And voltage / amprage while charging. My new smart battery chargers will not charge a completly dead battery, this old one will put a beguining charge into them and my new smart chargers can full charge them afterword . This volt amp meter works great. This meter is a replacement for the cheap ones. I've ordered originally from Amazon .

Installed for my solar array. Easy to install and use.

I have two of these. One appears to be working properly but the other is not giving an accurate voltage reading (displayed voltage is 0.5V to 0.7V higher than voltage measured on a multi-meter). There's a procedure for calibrating current reading (which I've done), but nothing for voltage. I'd just return it, but the window has closed and I can't find any support avenue other than a set of self-help steps that don't have anything to say about voltage accuracy.

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’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