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The relays get quite warm. Hot enough that you cannot touch them.

Chargery folks added low temp cutoff about 6 months ago. It is not reflected in the documentation yet.

Hi Will, You really ought to look at the Chargery BMS16T. I just got one. They are not cheap but will handle up to 500A and can use external relays. They claim to support low temp cutoff although mine is still in the box. The "T" on the end of the model name is very important. The regular...

THD = Total Harmonic Distortion. The less the better. Basically it is a measure of noise on the power line. Ideally, there would be no noise, just a pure sine wave. Noise on the power line tends to be hard on electronics and can shorten life span. So anything powered by the inverter...

Not really true. Yes, the WZRELB has some seemingly big transformers but not when you compare them to a Magna sine. Also, HF puts all kinds of voltage spikes on the output that either goes out to your loads (not good) or may be filtered out in better (i.e. more expensive) HF units. The bigger...

Low Frequency inverters tend to handle reactive loads much better. What is a reactive load? One of the best examples are motors or anything that has a motor. That would include refrigerators, saws, compressors, etc. Also any inductive or capacitive load. Any product that has a big intial...