DC Volt Amp Meter

Wife and I went on a camping trip, first day was for "self contained" / no hookups. Disaster struck, the "Coach" DC power was lost, it appeared as tho the batteries had completely died, we were up the river without a paddle so to speak. The following day we moved to full hookup site and everything OK. When I got home, tried to solve the problem of what is wrong with the DC power? I pulled the batteries out thinking they needed replacement (after less than 2 years), thought about buying a new converter / inverter. I tried to charge the batteries outside of the camper and they seemed to take it. Next morning, I installed this monitor, re-installed the batteries, and tried to start things up. The monitor was showing I had 13 volts, yet nothing was getting to the devices (lights, etc) and the camper monitor was dead / no LEDs for anything. I had my wife cycle the "COACH:" connect / disconnect switch and we could hear it, I followed the sound to the engine compartment (Class A Motorhome) and located the sound, as well as a small metal 'box' with a black button sticking out the right side of it, I pushed it in and that apparently reset a breaker, which then enable DC power to ALL devices. Problem solved! Bottom line, I NEEDED this device so I can more accurately diagnose problems with my system, it at least told me I had voltage at the batteries when nothing else in the camper could tell me that. AND, it monitors current, and I now can tell whether or not it is being charged, and what load is on it. Thinking ok buying one of these for my motorcycle too. 3 pics: 1st one shows overall installation, battery was just switched "ON" and is being charged by the converter, 2nd pic is closeup of 1st pic, 3rd is battery disconnected / not being charged OR discharged

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).

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.

Bought this for my boat. Very happy! I 3d printed a mount for it and have it wired to my main battery to keep an eye on the charging system as well as the battery health while I’m docked or anchored with the engine off

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.

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!

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