February 20, 20233 yr All mine are the US3000C's. I can't understand how I'd get a high voltage on discharge unless there is a possible fault in the battery.
February 20, 20233 yr 2 minutes ago, Tinbum said: All mine are the US3000C's. I can't understand how I'd get a high voltage on discharge unless there is a possible fault in the battery. It it the old or new chip 3000C?
February 20, 20233 yr Just now, PurePower said: Warranty claim? I know someone with the same 'problem' but its not a true reading for the cell, i monitored the pack and saw the same 4,095v high cell warning but in the cell monitor window all the cells were fine .. So i think its a BMS bug or something . Anyway he took the battery in for warranty and they told him the battery is perfectly fine .
February 20, 20233 yr Its the Old chip. All the batteries are on the same firmware. Only seen it on this one.
February 20, 20233 yr 52 minutes ago, Nexuss said: I know someone with the same 'problem' but its not a true reading for the cell, i monitored the pack and saw the same 4,095v high cell warning but in the cell monitor window all the cells were fine .. So i think its a BMS bug or something . Anyway he took the battery in for warranty and they told him the battery is perfectly fine . As I mentioned earlier, do you know if the battery pack voltage in the log is actually measured or is it calculated from the sum of all the cell voltages?
February 21, 20233 yr 9 hours ago, Tinbum said: As I mentioned earlier, do you know if the battery pack voltage in the log is actually measured or is it calculated from the sum of all the cell voltages? I dont know , but while i was watching and saw the yellow high cell warning box the pack voltage didint change and its just for a second so the cell is definitely not actually at that voltage .
February 26, 20233 yr Spotted this regarding my problem of a cell over voltage. https://community.victronenergy.com/questions/182659/pylontech-us3000c-us5000-internal-failure-problem.html Anyone got 2.8 firmware? I may contact Pylotech though as if a firmware update went wrong I could come back to them.
February 26, 20233 yr 14 minutes ago, Tinbum said: Spotted this regarding my problem of a cell over voltage. https://community.victronenergy.com/questions/182659/pylontech-us3000c-us5000-internal-failure-problem.html Anyone got 2.8 firmware? I may contact Pylotech though as if a firmware update went wrong I could come back to them. Version 2,8 is on the forum here somewhere i think in Youda's lab thread. I just installed it last week .
February 27, 20233 yr 14 hours ago, Tinbum said: Spotted this regarding my problem of a cell over voltage. https://community.victronenergy.com/questions/182659/pylontech-us3000c-us5000-internal-failure-problem.html Anyone got 2.8 firmware? I may contact Pylotech though as if a firmware update went wrong I could come back to them. All info posted above. Always use the .zip file and BatteryView 3.0.28
April 26, 20233 yr Good morning My English is very very poor Sorry damage parts https://www.mouser.es/ProductDetail/Bussmann-Eaton/SCF5432-30-14?qs=Li%2BoUPsLEnuCyt39ts0epg%3D%3D&countryCode=DE¤cyCode=EUR https://www.lcsc.com/product-detail/_Yangzhou-Yangjie-Elec-Tech-_C919618.html
April 26, 20233 yr Author 24 minutes ago, chetosvsgeez said: Good morning My English is very very poor Sorry damage parts https://www.mouser.es/ProductDetail/Bussmann-Eaton/SCF5432-30-14?qs=Li%2BoUPsLEnuCyt39ts0epg%3D%3D&countryCode=DE¤cyCode=EUR https://www.lcsc.com/product-detail/_Yangzhou-Yangjie-Elec-Tech-_C919618.html Is the triggerable fuses (the ones with 3 legs) blown? If so it appears you had a nasty high voltage on the terminals which triggered the BMS controller to protect.
June 12, 20233 yr Hello, I could finally repair the two USC3000 changes the fuses and the YJD18GP10A ... and all the problems were solved
August 1, 20232 yr On 2023/02/19 at 6:22 PM, Steve87 said: This is not for the first time I have seen Pylontechs do this. A BMS should be able to protect itself from a high voltage event. How a high voltage event can fry a BMS is beyond me. If thats the case then they need to apply a Voltage & amperage fuse to prevent this. How can a global company send out a battery that renders it in need of repair for a high voltage event. Even the cheapest BMSs sold in the DIY market will voltage protect without damage. Pylontech needs to improve their product. It's well below expectation at the moment. 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.
September 4, 20232 yr Question: Was the US3000C BMS changed from the US3000A/B... Are there any US3000A/B batteries with this issue? Edited September 4, 20232 yr by FixAMess
September 4, 20232 yr 30 minutes ago, FixAMess said: Question: Was the US3000C BMS changed from the US3000A/B... Are there any US3000A/B batteries with this issue? Their is a post on here showing a strip down of Pylontech batteries. They are different BMS's Edited September 4, 20232 yr by Tinbum
October 13, 20241 yr Hi ! I have a similar issue (locked in IDLE) on two brand new US5000, the problem appeared when I connected them for the first time to a Multiplus (without CAN link to a Cerbo, as I only have a raspberry without can hat). Can anybody skilled for that comment this event log ? Thanks in advance
October 13, 20241 yr On 2023/06/12 at 8:49 PM, chetosvsgeez said: Hello, I could finally repair the two USC3000 changes the fuses and the YJD18GP10A ... and all the problems were solved Good ! How is it working after this fix a year ago ?
October 14, 20241 yr 17 hours ago, Shortcut said: Good ! How is it working after this fix a year ago ? If you batteries are brand new then you don't want to be messing with them as your warrant will go. What does BatteryView highlight the error as? Your logs are not detailed enough to see. Have you ever seen the batteries discharge? Your wording seems to suggest you have, so perhaps it's a setup problem. We really need much more detail on how you have everything setup otherwise it's guesswork. Perhaps some photos. Edited October 14, 20241 yr by Tinbum
October 14, 20241 yr I see a fuse scenario looming (I have "SC" aka Short Circuit alarms, in the logs). Batteries charged relatively correctly by the mppt rs450 during the initial charge, (with high voltage risk, but I was careful to cut in time, which is another important aspect of the debate on these batteries), the packs display a soc of 100%. In reality, unbalances remain, the voltage is unstable during discharge I make the first attempt to connect the MPII 10,000 VA, WITHOUT Cerbo, so no CAN (will add it soon, not received), after taking care to precharge the capacitors with the 52.5v power supply: everything works, it lights up. I do other manipulations to connect the MPII 230V 10.000VA to the house, it lasts a while, I do not see the batteries go back to IDLE. The MPII capacitors are discharging. Happy to have connected my stuff, I turn the MPII button back on. Nothing happens. In this scenario, the batteries not able to output their nominal power suddenly drop in voltage, the amps rise sharply and the fuses melt instantly So despite their max max max capacity at 4000A for 2 ms in the manual, which is therefore 8000 in 2P, two US5000s might not be able to survive the capacitors ? After that I was able to finish the balance with an external power supply and there is not a single high voltage alert in the logs. Tinbum thanks, what would help more : logs I guess ? Y240412C50531697_event_20241010112508.txt Y240412C50531697_history_20241010112712.txt Y240420C50541329_event_20241013153319.txt Y240420C50541329_history_20241010102013.txt Edited October 14, 20241 yr by Shortcut
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