Grotman

Hallo. Did you manage to sort it out? It seems that you were ignored... I am here as a friend is sitting in the same situation.

I accept your advice but my US3000 "survived" and is still surviving on exactly the same settings. Perhaps I must get the supplier to read the US2000's logs...

Thank you. I am sure there are clever and generous people here. I cannot really argue with whether the battery overcharged or not. My issue is why the BMS allowed it to overcharge. Methinks the BMS is to blame but we ask the BMS to tell us what happened. And, the supplier does not want to accept liability for a "bad" BMS. How can the consumer ever win? All I need is a smart person to admit the BMS is to blame for breaking itself...

Thank you. This makes me think the newer batteries are not really "more sensitive" but instead bad quality. Something the consumer should not have to accept. I wonder if there is a better quality BMS to install - instead of the standard fare. Three failures are more than enough. Now to get an installer...

I initially ran the US2000 alone... I ran the two together until the US3000 broke. The US3000 ran alone thereafter. The system does not really work hard: Back up for when we shed our load or running the pool pump when the sun generates lots of power. The inverter is set to the seller's specifications: 53.2V. It never upset the US2000. What I mean to say is that there was never an issue with the inverter letting 54V through. My logic is that the problem is not the inverter but the battery. Perhaps my ignorance is shining through. What am I missing?

Still the first failure. H220907C30050067_history_20230223093714.txt

This is the first failure. H220907C30050067_event_20230223094320.txt

This is the second failure. Thank you for your time. P23US3000C041109_event_20230725162917 J00519.txt

Is this "fit for purpose" as referred to in the consumer protection act? I think not. There is a need for a professional/expert to assist the purchaser in an action against a supplier. The BMS is of no use if it protects the cells but breaks itself.

I bought a Pylontech US3000C that lasted 20 days. Segensolar denied liability as "the battery overvolted". I paid for a new BMS. It lasted 4 days. It sook it elsewhere (as I was hoping to get some expert opinion to take the seller on) to replace the BMS. The BMS broke as the "battery discharge was too high". (Fun fact: The inverter cannot be set to control the discharge.) This repair lasted 10 days. The relevant background is that my previous battery (a Pylontech US2000) ran without a glitch for three years with my Axpert 4KW/5VA inverter on the same settings. Every time the 3000 broke, I would install the US2000 and it would run seamlessly. I do not work with volts and amps. I work with probabilities and credibility. It is clear to me (at least) that the only differential is the battery (and not the operator, inverter or anything else). I hope for the sake of everyone who has these problems, that some "expert" can figure out what the problem is so that a warranty does not need to be discretionary. The wording in the Pylontech information sheet is clearly that the BMS protects the battery. It is of little value if the BMS breaks every time it protects the battery. Replacement is about R5000. I sit with a broken battery that I am dread to have fixed because there is absolutely no guarantee what the real problem is. I would appreciate any insight.

Hallo. I am jumping in here as your comment is the most relevant to my issue. I bought a Pylontech 3000 that lasted 20 days. Segensolar denied liability as "the battery overvolted". I paid for a new BMS. It lasted 4 days. It sook it elsewhere (as I was hoping to get some expert opinion to take the seller on) to replace the BMS. The BMS broke as the "battery discharge was too high". (Fun fact: The inverter cannot be set to control the discharge.) This repair lasted 10 days. The relevant background is that my previous battery (a Pylontech US2000) ran without a glitch for three years with my Axpert 4KW/5VA inverter on the same settings. Every time the 3000 broke, I would install the US2000 and it would run seamlessly. I do not work with volts and amps. I work with probabilities and credibility. It is clear to me (at least) that the only differential is the battery (and not the operator, inverter or anything else). I hope for the sake of everyone who has these problems, that some "expert" can figure out what the problem is so that a warranty does not need to be discretionary. The wording in the Pylontech information sheet is clearly that the BMS protects the battery. It is of little value if the BMS breaks every time it protects the battery. Replacement is about R5000. I sit with a broken battery that I am dread to have fixed because there is absolutely no guarantee what the real problem is. I would appreciate any insight.

That is putting it politely.

I hope that you did not buy from Ecopec. They ripped me off. I paid for a purchase. They did not have the product. Paid me a portion back and kept R12000.