150A Digital Watt Meter Solar Panel Power Analyzer Voltage Current Tester

So far so good. Exactly what I needed and delivered early.

I was disappointed to discover that this meter, unlike other similar DC meters, doesn't register amperage beyond 65Ah. Once 65Ah is reached the Ah readout just freezes. I have two other identical meters, but without the MC4 connectors, that continue registering Amp/hour by relying on symbols to makeup for the inability to represent the hundreds place value. This meter is still useful, but it's disappointing that doesn't track amp/hour beyond 65Ah. If you're not familiar with these DC meters, the 150 amp rating isn't for sustained electrical current. These devices cannot handle more than 50 amp of sustained current. Any current beyond 50 amps can only be withstood for very brief, intermittent periods. The leads are only 10 AWG, so the whole device would rapidly melt and burn during sustained current above 70 amps. Personally, I recommend getting an identical DC meter that can continue registering Amp hours beyond 65Ah and just adding the MC4 connectors yourself.

It does a great job reading the live activity my solar system. Basic general information is well worth the money. The connection is plug and play. The 4 star (should be 3) review is that when the system starts generating power the following day the readout screen is just a bar across the display. If I disconnect and reconnect the solar panel side the display works normal. Not sure why. …to remedy the problem. I wired in a switch on the negative side. Click off and back on resets the device. It’s not expensive. It works. Photos added…..Taken in the morning when the panel first gets light not generating electricity but a milliamp or so to energize the meter. The bar is what first shows and will remain the same all day if I don’t unplug or switch the negative side of the incoming source. My case; Solar panels. Second pic is immediately after the first pic after the reset(?). So it works but you have to reset (?) it daily if to get a consistent reading on the systems input values. Does NOT appear to interfere with rest of system performance or operating processes.