May 31, 20242 yr HI GUYS - NEEDS SOME HELP AND ADVISE - MY PYLONTECH UP 5000 BATTERY WAS CONNECTED WITH 2ND ONE AND DIED ON ME - NOW ABOUT 8 MONTHS OLD. TOOK IT IN TO CNBM MIDRAND - AFTER 2 WEEKS TESTING THE OUTCOME IS THE BATTERY IS OVERCHARGED AND CANNOT BE FIXED. ANY ONE KNOW WHAT TO DO - CAN I CONNECT ANY OTHER RELIABLE BATTERY MAKE TO MY EXISTING UP 5000 PYLONTECH THAT IS WORKING PERFECTLY. ANY ADVISE WOULD BE MUCH APPRICATED - THANK YOU. MY EMAIL ADDRESS: [email protected]
May 31, 20242 yr 1 hour ago, MARTIN VICTOR said: TOOK IT IN TO CNBM MIDRAND - AFTER 2 WEEKS TESTING THE OUTCOME IS THE BATTERY IS OVERCHARGED AND CANNOT BE FIXED. To be direct, that is a cheap shot answer from them. Can you instruct them to put it in writing and also ask them how is it possible for the chemistry to get damaged when your battery has a BMS in order to prevent overcharging . Come on, this is not a lead acid battery last I checked. Also request them to stipulate exactly why the battery cannot be fixed. There also excist logs inside the machine, did they show you extracts of it, and when the bms went in to protection? Edited May 31, 20242 yr by BritishRacingGreen
May 31, 20242 yr Author BRG - Thank you so much will follow up on your comment with CNBM people - thank you and appreciated.
May 31, 20242 yr Many other batteries are out there which can be paired as long as they have 15 cells.A friend of mine is running a cheap svolt in parallel with a pylontech with no comms cables and they work fine. Turn your charging voltage no higher than 53v ,this will cause the charge current to drop off before its fully charged. I am only charging to 52.5v with no issues. Pylontech are doing a dirtyon us and making us carry the can for their bad bms.
June 3, 20242 yr Author RIGHT PEOPLE OF POWERFORUM - AFTER CONSULTATION WITH CNBM IN MIDRAND AND THE SUPPLIER " SOLARWAY-SUPPLIES" ABOUT UP5000 PYLONTECH OVERCHARGE DIAGNOSTICS - JUST THIS - THE BATTERY GUARENTEE NOW NUL AND VOID - NO REPLACEMENT - THIS IS A R28000.00 COST FROM MY SIDE - PYLONTECH NOT WILLING TO REPLACE THE BATTERY. ALL I'M TRYING TO SAY - DO NOT BUY ANY PYLONTECH PRODUCTS IN SOUTH AFRICA - YOU WILL REGRET THIS. THANK YOU.
June 3, 20242 yr 7 minutes ago, MARTIN VICTOR said: RIGHT PEOPLE OF POWERFORUM - AFTER CONSULTATION WITH CNBM IN MIDRAND AND THE SUPPLIER " SOLARWAY-SUPPLIES" ABOUT UP5000 PYLONTECH OVERCHARGE DIAGNOSTICS - JUST THIS - THE BATTERY GUARENTEE NOW NUL AND VOID - NO REPLACEMENT - THIS IS A R28000.00 COST FROM MY SIDE - PYLONTECH NOT WILLING TO REPLACE THE BATTERY. ALL I'M TRYING TO SAY - DO NOT BUY ANY PYLONTECH PRODUCTS IN SOUTH AFRICA - YOU WILL REGRET THIS. THANK YOU. Ask them for the BMS log. The BMS should prevent the individual cell to be overcharged. I have been running my LBSA battery on voltage settings, I can clearly see on my monitoring system that once any individual cell reaches 3.50 V the BMS stops charging and goes into equalization mode. See attached dashboard.
June 4, 20242 yr On 2024/06/03 at 9:41 AM, MARTIN VICTOR said: RIGHT PEOPLE OF POWERFORUM - AFTER CONSULTATION WITH CNBM IN MIDRAND AND THE SUPPLIER " SOLARWAY-SUPPLIES" ABOUT UP5000 PYLONTECH OVERCHARGE DIAGNOSTICS - JUST THIS - THE BATTERY GUARENTEE NOW NUL AND VOID - NO REPLACEMENT - THIS IS A R28000.00 COST FROM MY SIDE - PYLONTECH NOT WILLING TO REPLACE THE BATTERY. ALL I'M TRYING TO SAY - DO NOT BUY ANY PYLONTECH PRODUCTS IN SOUTH AFRICA - YOU WILL REGRET THIS. THANK YOU. Ok I am sorry for the bad news you received. One thing I would like to know is wether any cell is actually damaged or wether the bms has actually blown its own fuse under overvoltage condition. These fuses are actually on the bms module itself. What can you tell us? Does the battery switch on? And if so is there a voltage output at its terminals? Do you you have a pylon console cable in order to view the state of your battery via BatteryView windows app?
June 4, 20242 yr Author Hi BRG. Thanx for reply. - the CNBM technical guys in Midrand that is the distributors of Pylontech batteries - did the tests on this battery - they gave my installer a report. Last week the report showed that the 4th cell voltage was low. Late last week the report came as to overcharge battery - The battery has all the time switched on - charged etc. but when you switch an element like kettles or hair dryer the red light of battery came on - warning light but only this battery - my other one that was connected in parallel no problems - actually still working beautifully - and then this battery also discharge very quickly like half hour its down to 40% that inverter was set to before eskom takes over - not loadshedding now. - so yes was working but with these problems - battery did fail a few times in the past - cut out completely - no do not have a pylon console - only cell phone app of luxpower inverter - so yes that's my problem with the pylontech guys.
June 5, 20242 yr Write an email straight to Pylontech service dept. explaining the problem and tell them battery s/n. Distributors are usually making decisions on warranty themselves. Pylontech will contact the distributor directly and they will honour the warranty. Did you register your batteries on Pylontech website? Sign Up battery-Service-Pylon Technologies Co., Ltd.
June 5, 20242 yr Author THANK YOU - MAURITIUS B - Have done all of that. the replies from them below. Hello, The original distributor of Y225024C12250097 is CNBM. Please send an email to [email protected] for further assistance in South Africa. Thank you. that is all they are doing-communicating - 2nd email - they tell me to be patient. An absolute hopeless case my friend - no-one seems to want to take responsibility for this disaster?
June 6, 20242 yr On 2024/06/05 at 11:00 AM, MARTIN VICTOR said: An absolute hopeless case my friend - no-one seems to want to take responsibility for this disaster? That's terrible . If it turns out eventually that you are on your own here , and you have exhausted going the warranty avenue, then we need to find an alternative path for you to blow life back in your R28K investment. The good news : your BMS is OK , and most of your 15 cells seems to be ok. The bad news : you have one bad cell . We then need to tunnel the internet to find either a new one or a good used one. There are a number of Pylon gurus on this forum that may be able to help us . Also we have @Steve87 that is very clued up with the chemistry , and he will be able to assess and verify each cell from first principles , using , amongst other , a proper cell tester. So keep us updated.
June 6, 20242 yr On 2024/06/05 at 11:00 AM, MARTIN VICTOR said: THANK YOU - MAURITIUS B - Have done all of that. the replies from them below. Hello, The original distributor of Y225024C12250097 is CNBM. Please send an email to [email protected] for further assistance in South Africa. Thank you. that is all they are doing-communicating - 2nd email - they tell me to be patient. An absolute hopeless case my friend - no-one seems to want to take responsibility for this disaster? Hi Martin , can you please post all the log/history/event files from the battery so we can try to determine what happened to it .
June 7, 20242 yr Author Hi Guys - thanks for all the commments and advise - herewith the report from CNBM technical guys in Midrand - selling Pylontech Batteries. regards hope this make sense to somebody - not for me at all?? Pylonteck report.PDF
June 7, 20242 yr 1 hour ago, MARTIN VICTOR said: Hi Guys - thanks for all the commments and advise - herewith the report from CNBM technical guys in Midrand - selling Pylontech Batteries. regards hope this make sense to somebody - not for me at all?? Pylonteck report.PDF 901.19 kB · 2 downloads Ok thanks ,looks like they are trying to take advantage of you . Cells at3,6V does not cause swelling ,cells under 3,65V is still perfectly safe and should not cause a failure. They are only giving you a small snippet of the log in that document, for you to fight this with more probability of success you will have to get a consol cable and pull the BMS log yourself to get the events and history logs. Then post that history and event pdf's here. We can then go though the complete life of the battery and determine how it has been behaving. The amount of high voltage logs suggests it was faulty from the start. Also pull the logs from the working battery so we can compare them. If you can present them with clear cut data that it was not your fault pylon should honor the warranty. All the info on how to pull the logs are on the forum. You have to load batteryview to save the history files. Edited June 7, 20242 yr by Nexuss
June 7, 20242 yr Author Thank you Nexuss - will try and get this info - it is soooo bad if people try to screw you - but obviously this is South Africa - i am so disappointed in these guys - specially the supplier company "SOLARWAY-SUPPLIES" as well they also don't want to take responsibility - stating to my installer that its my fault . but what ever thanks again - will try and get this info.
June 7, 20242 yr Can see from the logs that it was consistently charging at 53.8-54V, max for a Pylontech is 53.5V. Do NOT exceed this ever or they will void your warranty. Voltronics and Victron should be set to 53V max, they have spikes in voltage on charging that'll void the warranty as well. You won't get anywhere disputing the warranty void, this is decided by Pylontech and the local guys have no say, you'll have better luck with the installer asking why he set the voltage to 54. The Pylontech BMS does not trip at 53.5V to protect from this. Pylons are especially susceptible to over voltage swelling because of this and that they only use 15 puch style cells which means the pack needs to be at a lower voltage and they are less resilient than prismatic cells. They are currently developing a new BMS that can bleed off high voltage but this isn't in production yet. No, I can't tell you how I know this.
June 7, 20242 yr 3 hours ago, LiFePOWER said: The Pylontech BMS does not trip at 53.5V to protect from this. Pylons are especially susceptible to over voltage swelling because of this and that they only use 15 puch style cells which means the pack needs to be at a lower voltage and they are less resilient than prismatic cells. Exactly!! Then why don't Pylontech honour the warranty the BMS is a battery management system not a battery reporting system the BMS is supposed to take the punch and protect the cells from overvoltage/amps. Once the damage is done it reports the error and keep logs why doesn't the BMS protect the cells from getting damaged in the first place. There is plenty problems with Pylontech lately maybe Pylontech needs to sort the BMS on there side first but in the meantime honour the warranty.
June 7, 20242 yr 21 minutes ago, TaliaB said: Exactly!! Then why don't Pylontech honour the warranty the BMS is a battery management system not a battery reporting system the BMS is supposed to take the punch and protect the cells from overvoltage/amps. Once the damage is done it reports the error and keep logs why doesn't the BMS protect the cells from getting damaged in the first place. There is plenty problems with Pylontech lately maybe Pylontech needs to sort the BMS on there side first but in the meantime honour the warranty. Will probably be disliked to death for this and I'm not defending Pylontech, they don't need it and it's actually in my best interests to bash them to hell... BUT From their side, the battery should have been configured correctly and not be allowed to overvolt, the installer should know what they are doing, if they don't it's not Pylontech's fault. They've given the guidelines to follow, if you don't, well... Best analogy I heard was the charge limit voltage is like a car's rpm redline, it'll allow you to go over but you really shouldn't. Then you proceed to rev the engine above the redline constantly and say it's Ford's problem when it blows... The reasoning for allowing it to go over volt and not shutdown is as far as I can tell a customer experience one. Pylon's were initially designed and sold in, let's say, more civilised parts of the world where the people installing actually were trained, accredited and therefore knew what they were doing. 99.9% of the time an OV was just a blip and if the battery cut off, the system goes down, customer has a bad day and Pylontech look bad. So they "ass"umed the same here. Only now down the line once these things have been in the wild west are they seeing the results of cowboy installers. I could tell you some horror stories of electricians who think they know how to install inverters because they're legally allowed to issue a CoC (bonded input and output neutral as well as earth to the chassis anyone?). OP is likely out 28k unfortunately unless they can make enough noise that CNBM, SolarWay or their installer replaces it. If anyone else has Pylons in their setup, put them at around 0.5V below the max charging voltage on the spec sheet and you'll be fine.
June 9, 20242 yr "put them at around 0.5V below the max charging voltage on the spec sheet and you'll be fine." - Anyoane using Pylontech with Deye inverters and can share best practice on limiting the voltage? Is Pylontech controled by Deye via BMS comunication setting or by defining charging voltages in settings? Thanks!
June 9, 20242 yr Very interesting discussion here & we have had this discussion before. On the one hand Pylontech sits in China & sends these batteries globally. They then rely upon the main supplier to carry out any RMAs or repairs or investigations. They cover themselves with the BMS able to record logs of the operation of the battery & what it has been exposed to. The problem is that there are massive variations of quality in installers/ Owner installers & inverters. Some inverters support the Comms & others don't. If the inverter doesn't support the Comms then you rely on knowing what to do to setup the settings properly on the inverter. If there is Comms there is a Hit & miss chance whether the installer gets the Comms established & then also covers himself to get the user settings also setup just in case the Comms fails. In all these cases Pylontech has written the fine print very well & they request the Logs & if the battery tells a story that shows any of the above not followed, they refute your warranty. I have experience of a full bank of 20kWh of Pylontechs that have been warranty covered before the Logs showed that we were on point. The main BMU had a major fault & could not be repaired. They repaid in full after an investigation that lasted 3 weeks of back & forth checking logs & investigation of a repair. In the end they validated the warranty & a full refund was provided. We can argue over the quality of their BMS or we can start to realise that you need this installed by someone who knows what they are doing so that you are protected by the warranty. What I have seen in this business is that so many people get into this game & say it's so easy anyone can do this.... The end results usually dont turn out good. This is not cheap equipment, do your research & protect your investment. Massive take away of this thread & others like this on PYLONTECH: Pylontech have a very specific way they want you to install their battery. They also have a strict policy of Comms setup or manual settings setup. If you violate these, you on your own & you can't then go back & make comments on what the BMS must & must not do. Their design is not hidden nor is their policy. If you buy a Pylontech follow the rules of use. Otherwise you will end up out of warranty & then guys like @BritishRacingGreen or myself might be able to process a repair outside of warranty with a JBD BMS replacement. Edited June 9, 20242 yr by Steve87
June 9, 20242 yr 7 hours ago, maxmaia said: Anyoane using Pylontech with Deye inverters and can share best practice on limiting the voltage? Is Pylontech controled by Deye via BMS comunication setting or by defining charging voltages in settings? Thanks! Yes, the Pylontech is compatible with Deye, thus always utilize the BMS communication. The BMS manages the battery system and communicates with the inverter. Why play around with voltages settings and risk voiding the warranty, when the solution is just as a click away?
June 9, 20242 yr 新-Deye Approved Battery list(DY-LV48-0073) (deyeinverter.com) Edited June 9, 20242 yr by CobusK
June 9, 20242 yr Thanks for sharing this. Well, I was asking as noticed that using BMS link, from time to time, I can see cell voltages as 3.57V for very short period of time. And overall battery sometimes reaches 53.4V. These are just very short peaks, these voltages never stay longer than a second or two. I'm just recording such maximum values with Home Assistant connected to Solar Assistant via mqtt. Thus wondering if it make any sense to use some predefined voltages in Deye configuration instead BMS...
June 9, 20242 yr 4 hours ago, maxmaia said: Thanks for sharing this. Well, I was asking as noticed that using BMS link, from time to time, I can see cell voltages as 3.57V for very short period of time. And overall battery sometimes reaches 53.4V. These are just very short peaks, these voltages never stay longer than a second or two. I'm just recording such maximum values with Home Assistant connected to Solar Assistant via mqtt. Thus wondering if it make any sense to use some predefined voltages in Deye configuration instead BMS... So this is 100% that one would not like to see with the comms between inverter and battery working.
June 9, 20242 yr Recommended charge voltage on all Pylontech batteries is 52.5v(3.5v/cell). US 2000 - Charge Voltage: 52,0-53,2 V (52,5V recommended.) Charge/Discharge Current: (25 A recommended), 50 A max. ‐---------------------------------------- US 3000 - Charge Voltage: 52,0-53,2 V (52,5V recommended) Charge/Discharge Current: (37 A recommended), 74 A max ----------------------------------------- US 5000 - Charge Voltage: 52,0-53,2 V (52,5V recommended) Charge/Discharge Current: (50 A recommended), 100 A max Edited June 9, 20242 yr by TaliaB
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