pylontech.com Opiniões 

«State lontani da queste batterie: pessimo acquisto e pessima assistenza. Buttati 2 mila euro dopo 3 anni di funzionamento! Una si è gonfiata come un pallone, l'altra non carica più del 50%. Per la prima, per ovvi motivi di sicurezza, l'ho aperta per paura che prendesse fuoco, perdendo così la garanzia; la seconda la uso come soprammobile. Comprate batterie della Many: vanno a bomba e hanno un'assistenza veloce e molto disponibile.
P.S. Sono un tecnico, quindi so come si fanno a calibrare le batterie; e comunque, nonostante lavoriamo nello stesso settore, non mi hanno voluto cambiare quella schifezza di batteria. Quindi avviso tutti: non acquistate questa marca, stateci lontani

I sended an email to Pylontech support asking if there batteries were compatible with my solax inverter.
To make things easy i attatched a foto of my inverter with specifications and serial number, and also the manual of the inverter.
Next day they, answered that my inverter is no longer compatible with pylontech batteries because solax changed the protocol but pylon. protocol is still the same.
I answered that in the inverter manual us2000c is 100% compatible.
2nd email they repeated the answer they gave in the first email, always short emails, because words are too expensive.
I was starting to think that they have some kind of difficult reading and writing english and watching email attachments,
I decided to ask a friend to borrow me a pylon, battery, and for my surprise it works perfectly in CAN protocol.
Once more i decided to confront Pylontech representative for Portugal and Spain telling them my results, and noticing them they they were lazy, about helping me.
They answered me telling that it was there obligation telling me about the compatibility issue, but they never wrote sory about our lack of commitment.
Pylontech has the worst technical support i ever experienced, they don't have people with experience, sensibilty and empathy enough to help us.
I have read posts of people complaining about that, but i gave pylontech a chance, but i shouldn't...it is all true, pylontech is not a good company to work with.
I hope this experience can help other users to get the best deal, this is not just about selling, in my case i was about to spend 5000 euros in a new solar system, when with 800 euros i can just keep using my old solar system.

Pylontech Power cube X1 after 2 years holds less than 50% charge. Pylontech support is practically inexistent. I have been waiting 5 months for a resolution and still nothing. Their 10 years warranty is a joke. DO NOT BUY PYLONTECH.

i purchase new pylontech fidus battery, but new battery didn't work at the time of installation, it's not work even a single 1 day.
I contact with shopkeeper & customer care of pylontech, They didn't not any support even today, There warrenty is totally fraud and scam.
please don't purchase pylontech battery.

We had a Pylontech battery installed as part of our solar panel installation. Due to WiFi glitches we have discovered that our battery ceased charging in June or July last year. The battery is still under guarantee but Pylontech will not engage with our supplier. Meanwhile we do not have the system we paid for. Shoddy customer service. There are plenty of battery manufacturers out there and I would suggest you find another.

El servicio técnico de Pylontech es una absoluta vergüenza profesional. Tras fallar mi sistema de dos baterías en paralelo, su "equipo de ingeniería" denegó la garantía alegando falsas sobrecargas externas y afirmando por escrito que la batería sufría un "daño irreversible en las celdas y era inservible".La realidad los ha dejado en ridículo ante la física más elemental:Su "daño irreversible" era falso: Decían que las celdas estaban destruidas, pero apliqué una carga externa supervisada por mi cuenta y la batería ha resucitado por completo. Está funcionando a la perfección. No estaba rota, su propio software (BMS) la había bloqueado mal y su "ingeniería" ni se enteró.Diagnostican equipos que ni han mirado: Emitieron el informe usando únicamente los datos de la batería que ahora funciona. De la segunda batería (la que sí está muerta), ni se molestaron en mirar los registros. Usan el historial de una batería sana para denegar la garantía de otra rota.Desconocimiento de la Ley de Ohm: Al estar conectadas en paralelo, una sobrecarga externa real del inversor habría afectado a las dos por igual. Que una funcione perfectamente y la otra esté muerta demuestra un defecto de fabricación interno aislado que no quieren asumir.He cerrado la incidencia por mi cuenta porque no merece la pena perder el tiempo con una empresa que inventa diagnósticos plantilla para estafar al cliente. Huyan de esta marca. El soporte es nefasto y su ingeniería, un chiste.

I am extremely disappointed with the service from Pylontech regarding a warranty claim that is still unresolved.
My faulty battery was collected in early March for replacement under warranty, and since then the process has stalled with no clear resolution. Communication has been slow and ineffective, with responsibility seemingly passed between parties and no one taking ownership.
Despite repeated follow-ups, I am still without a replacement battery. This ongoing delay is not only frustrating but is also costing me money due to the loss of use of my system.
While I have received polite responses, there has been no meaningful progress—only further delays and escalation without outcome.
For a company of this size, I would expect a far more efficient and accountable warranty process. Unfortunately, this has not been the case.
I hope this review prompts urgent action to resolve this matter.

Biggest regret ever!
I purchased 5 of the 2.4kWh batteries in 2019. All except one have developed a fault. Two have been replaced under warranty but they have refused to replace the other two. That is an 80% failure rate with thousands of pounds lost. How can any company, in good faith, continue to sell this shocking product?

Negative Erfahrungen mit Fa. Pylontech.
Nach etwas mehr wie 2 Jahren hat sich eine Batterie verabschiedet und aufgebläht. Nachdem Pylontech angeschrieben wurde, reagierten die bald. Das ist gut. Weniger gut das so knapp nach der garantieablauf eine Ablehnung kam. Die Baterien haben BMS ein Sicherheitssystem damit die Batterien nicht zu viel Strom bekommen und man sagte mir das der Schutz einmalig funktioniert sollte es wieder zu Überspannung kommen, bekommt Batterien schaden. Das spricht aber nicht für sich.

I purchased a Pylontech battery system to go with my solar panels and Solis inverter two years ago. The battery stopped working middle of November and it reported to the customer services department to deal with (under guarantee). Firstly they would not allow the battery to be sent to them as they already had a full quota to deal with and they were not allowed to accept more due to storage. It was picked up the last week of November and having called several times been told it is in a queue waiting to be checked. After two weeks the battery was tested and a fault found and a part was required which needed to be shipped from China. I am now told this will not be delivered till January, over two months since it broke down. The level of service is appalling and I would not have purchased this system if I had known about their service issues.

Ich habe insgesamt 4 Polyntech Batterien, 2 US2000c, 1 US3000c und 1 US 5000c. Im wesentlichen laufen drei Batterien sehr gut, eine hat schon sehr früh Ärger gemacht, die Kommunikation gestört, konnte nicht gleich geladen werden....Also habe ich diese Batterie abgeschaltet.
Nun gibt es in Deutschland eine Servicestelle, die ich angeschrieben habe, versucht das Problem zu erklären. In mehreren Mail musste ich die Batteriedaten senden, teilweise die gleichen mehrmals, und dann sollte ich (als Kunde) den Datenspeicher auslesen. Dazu müsste man nur ein spezielles Datenkabel selbst konfigurieren, das heißt eigentlich, komplett neu bauen, dann mit dem Computer versuchen, die Daten aus der Batterie auszulesen. Und dann über diverse Onlinespeicher an Polyntech Deutschland schicken. Dann würde man mir mitteilen, wie es weiter geht....
Da ich dieses Kabel nicht habe, und so etwas nicht ganz einfach zu montieren ist, habe ich angeboten, selbst vor Ort nach Reutlingen zu kommen, damit man dort die Daten selbst auslesen kann. Dies sei aber nicht möglich, wurde mir mitgeteilt.
Also, wer Polyntech kauft, sollte mindestens Elektro Ingeneur sein, oder, defekte Geräte, egal, wie alt oder jung, VERSCHROTTEN!
Das ist kein KUNDENDIENST, wenn der Kunde für den Hersteller arbeiten muss!

Innerhalb der Garantiezeit ist ein US2000 Plus Akku ausgefallen. Mit immer wieder falschen und verleumderischen Behauptungen versucht Pylontech die Garantie zu verweigern, wobei eindeutig ein BMS-Fehler den Ausfall verursacht und das BMS den Akku zerstört.

I'm writing this review after 9 years of troubled use and now finding myself in a disastrous situation. I purchased three Pylontech Extra2000 batteries in 2016, paired with a Solax inverter. The batteries had a 5-year warranty. Exactly in the 6th year, the "master" battery stopped working, so I was forced to purchase a new battery. This time, they gave me a US2000. In August of this year, 2025, exactly in its third year of operation, this last battery stopped working. After frequent contact with customer service directly in China, they finally decided to replace the US2000 under warranty, only to send me a US2000C. I had my technician install it, and he realized there was a problem because the US2000C battery beeped. When I reported this issue to the customer service in China, they candidly told me that the US2000C couldn't communicate with the other Extra2000s, and therefore I had to purchase two more US2000C batteries. In the past nine years, I've already purchased four batteries from them, and now I need to buy two more if I want to continue storing energy safely. So, they make batteries that quickly turn out to be defective and that don't communicate with the ones previously manufactured, and they take absolutely no responsibility for the inconvenience they cause to customers. A truly terrible experience. I hope you, who are reading this review, will take this information to heart and avoid being scammed by this company.

Scrivo questa recensione dopo 9 anni di travagliato utilizzo e trovandomi ora in una situazione disastrosa. Acquisto 3 batterie Pylontech Extra2000 nel 2016 associate ad un inverter Solax. Le batterie avevano una garanzia di 5 anni. Esattamente al 6°anno, la batteria che faceva da “master” smette di funzionare e quindi sono costretto ad acquistare una nuova batteria. Questa volta mi danno una US2000. In agosto di questo anno 2025, esattamente al suo terzo anno di lavoro questa ultima batteria smette di funzionare. Dopo aver avuto contatti frequenti con l’assistenza direttamente in Cina, questi finalmente si decidono di sostituirmi in garanzia la US2000 solo che mi mandano una US2000C. La faccio montare dal mio tecnico e questi si accorge che c’è una anomalia perché si sente il cicalino della batteria US2000C. Quando faccio presente questa anomalia al servizio di assistenza in Cina mi dicono candidamente che la US2000C non può comunicare con la altre Extra2000 e quindi devo acquistare altre due batterie US2000C. In questi 9 anni ho già acquistato da loro 4 batterie ed ora devo acquistarne altre 2 se voglio continuare ad accumulare in sicurezza. Quindi, costruiscono batterie che si rivelano presto difettose e che non comunicano con quelle costruite in precedenza e non si assumono assolutamente la responsabilità dei disagi che creano ai clienti. Veramente una pessima esperienza. Voi che leggete questa recensione spero che possiate farne tesoro per evitare di essere truffati da questa ditta.

Excellent batteries, I've had a great experience with them doing exactly as I wanted.

Ich betrieb 4 x US2000C seit ca. 3 Jahren. Ohne ersichtlichen Grund hat sich eine Batterie derart aufgebläht dass das Gehäuse regelrecht zerrissen wurde und wurde sofort entfernt. Nach dem auslesen der logs der noch intakten Batterien wurde die Garantie verweigert, wegen einer angeblichen Überspannung. Eigentlich kann das nicht das ursprüngliche sein, denn die anderen 3 Batterien laufen weiterhin ohne Probleme, mit genau den gleichen Umstand. Meiner Meinung versucht sich hier pylontech um die Garantie zu winden für eine defekte Batterie. Aus dem Grund, kann ich nur dringend von Kauf einer pylontec Batterie abraten, denn Garantie gibt es bei der Firma trotz großer Versprechen nicht.

Ich betreibe hier 7 Akkus der Fa. Pylontech. Innerhalb der Garantie war das BMS defekt. Dieses wurde postwendend hier abgeholt und ich habe es auch zeitnah zurück erhalten.
Hiernach hatten die Akkus einen Hau. Ich konnte leider nicht feststellen, welche Akkus defekt sind, weil mir das technische Verständnis fehlt.
Nach langem Email Verkehr und zwischenzeitlich das Gefühl verarscht zu werden, habe ich heute 7 nagelneue Akkus angeliefert bekommen.
Darum gebe ich Pylontech die volle Punktzahl.
Danke nochmal!

Absolutely the worst service I have ever had from a supplier. I live on a farm and we are completely off grid. All very well until the Pylontech batteries that power the house start playing up and we have only a diesel generator as backup. On one occasion it took 5 weeks for them to replace a faulty battery under warranty. On another occasion a software update caused two batteries to stop functioning- you’d think a simple fix through some sort of diagnostic device. No - three days and counting. I’m still waiting.
I am stuck with these for now but when replacement time comes I will NEVER use Pylontech.

Ich ließ im Sommer 2019 vier US2000 Plus installieren. Diese haben im März 2025 keine Kapazität mehr aufgewiesen, so dass ich Pylontech kontaktierte. Zunächst wurde mir die Garantie verweigert, da die Batterien nicht gemeldet wären. Mit entsprechendem Nachweis wurde die Garantiefähigkeit eingeräumt, die sei aber bereits abgelaufen! Mit Vorlage der Garantieunterlagen wurde eingeräumt, dass der Garantiefall besteht und ein Ersatz zugesagt. Das war im Mai 2025. Geliefert wurde bis heute nichts, aktuell antwortet Pylontech nicht mehr auf meine Anfragen!
Finger weg
von Pylontech!

I bought 3 Pylontech batteries for my off grid setup and 2 of them stopped working after less than 5 years. I'm supposed to provide data from the batteries, but the batteries don't connect to the newest software with which to extract said data. Neither Pylontech nor the supplier gave me a solution for this problem so I am stuck with no way of reading out the data to support a warranty claim. I have opened the batteries and they both have cells that were expanded due to overcharging. My inverter has a specific setting for Pylontech and automatically migrates all relevant settings. However, it appears these settings were set to high. Also Pylontech is supposed to have a BMS and therefore this really shouldn't happen. I suspect their BMS is BS (it is in a way, but also the voltronics inverter isn't great)
Additional info: As a last ditch effort I contacted Pylontech's customer service myself. I got a useful reply immediately, was told to disconnect the batteries and take fotos. The fotos were forwarded to their technical dept. And after 3 weeks or so I got 2 new batteries delivered to my address. So they honored the warranty. Moral of the story? Persist! I won't connect them to my current inverter. I'm replacing it with Victron inverters that can do a much better job keeping the batteries properly charged, not overcharged.

Avoid at all costs! No support and no warranty. The extended warranty offered on line by registration for your new batteries is a complete scam.
The are plenty of other battery suppliers out there Fogstar for example.
JUST AVOID PYLONTECH.