Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Can the unit tolerate a source and load reversal? I'm wondering if the meter would be damaged if the source voltage dropped and became the load.
Document: so I will tell you how I did mine . you simply wire in the source side wires to your charge controller output and the load side wires connect to the + and - on the battery ! and there u will have all the info about your batteries you have been wondering about instead of just the charge controller telling you only if your battery is fully charged or not . great product for the price !
This works good and appears to provide the correct information. The meter could use improved labeling and a much better instruction/data sheet but for the price it's a good bargan.
Used with my DYI LiFePo4 batteries and kayak trolling motor. This way, when on the water,  I always know how much juice I have consumed out of my batteries (and have an idea about remaining range). Also use it when charging batteries to see how much juice went into them.I also have a different and more expensive version of this meter - one with back light.
I recently bought 1 of these after buying thr more expensive name brand unit, and while I do miss the backlighting that is not a huge problem in my radio room. I agree with others I wish the wires were about 2 inches longer on each end . Seems to have same functions just no backlight and the short wires, which I solved by installing Anderson power poles on the leads. Will definitely be back for more.KM5LB
I'm using this to monitor the output of a 10A PWM solar charge controller powered by 2 portable panels. It's perfect for this type application. As others have noted, the leads are disappointingly short at only about 1-1/2&#34; long. 6&#34; leads would've been way easier to work with. The blue aluminum housing is attractive but not moisture resistant, so keep this in mind when thinking about where it'll be used.
it was just as good as others that are more expensive. I did not use the case, just the inside electronics. No back light, I tried to rewire it to power the back light but surprise! the back-light is really missing,
Works great, is cheap but Hey! where's the backlight? Looks like the 16 X 2 need to be disemboweled to get to the LCD backlight pin. Bleh
This thing works great ! it gives me the exact info I needed to know, and that is how many watt hours and amp hours my solar panels are putting back into my batteries. also shows the instant watts and amp output and the peak watts the panel produced as well as the peak amps .
The leads could have been a little longer with some kind of termination. Most uses will require some kind of wire splice and extension wires.
Still, overall it's a great value for what you get and works exactly as advertised.
Answer: no