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OK, I got a new meter, turns out the same one I then saw that Will used in a lot of his tests. https://www.amazon.com/gp/product/B07YWVCBRN/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 I charged at 20 amps until the BMS kicked it off, then charged again with 3 amps until the BMS kicked it...

That’s the BMS cutoff. Shunbin says the BMS cuts off at 10 to10.5. How many Ah did you pull and how many amps? And if you have a 500 Ah battery as you said, with small loads that would last a long time before the voltage drops.

They do have a lot of positive reviews also. So the jury is still out. Unfortunately for me, I used this DC watt meter: https://www.amazon.com/gp/product/B07PKHPC1T/ref=ppx_od_dt_b_asin_title_s01?ie=UTF8&psc=1 And used my fridge as a power drain (didn't want to waste the power!). It was...

Steve, perhaps you could offer some positive help, like recommending a good watt meter so I can finish testing mine? Or maybe answer my question on the testing discharge rate if you have that knowledge? I think most of us are capable of reading and understanding reviews.

Hello - first post here. Been interested in self-generating power for some time and finally getting around to acquiring some seriousl batteries to make it practical. Love Will’s YouTube tutorials. Was going to make my own but don’t have a lot of spare time. Found this on Amazon and wondering...