September 1, 2025Sep 1 Hello all !I will share a little of my experience of using SE5.1 pro b. When charging the battery, when the voltage on one of the cells reaches 3.6 volts, the BMS goes into standby mode and immediately goes into DISCHARGE mode for about 10 seconds. The discharge current is about 4-5 A. Such a current can only be obtained from a 12R 100W resistor attached to the case. I noticed this behavior on the LVESS0224725N02 firmware. On the previous version of the firmware, the battery simply goes into standby without using DISCHARGE. This seems to be a very useful function, especially if you charge with a high current. The same resistor is also used when turning on the battery as PRE CHARGE. Then perhaps it makes sense to update the firmware to version 2009 for those who have not updated it yet. What do you think?
October 5, 2025Oct 5 On 06.08.2024 at 07:32, ZS1SCI said:Доброго дняДля тих, хто зацікавлений Я створив новий репозиторій для esphome, використовуючи ESP32+MCP2515, щоб прослуховувати обидві CAN-шини на цих акумуляторах.https://github.com/Psynosaur/esphome-deye-batteriesУраHi ZS1SCI! I am using Deye SE G-5.3 battery. I am monitoring the battery using Canalist-II adapter and LVESS_Monitor V 1.18 program. I am also trying to monitor the battery via Home Assistant. Home Assistant receives data from Inter CAN port. I compiled YAML file to receive data from Inter CAN port about cell voltages and data about SOC, SOH, U, I Pack 1 PCS CAN port. But in Home Assistant only data about cell voltages from Inter CAN port appears. I checked signals on RX input (GPIO 16) with oscilloscope. Information from PCS CAN bus comes constantly. But why is it not displayed in Home Assistant then? Edited October 6, 2025Oct 6 by ppwwdd
October 5, 2025Oct 5 Ohan, I forgot to say... Thank you for the information you provide on the forum. Your research helped me a lot. I have a Deye SE G-5.3 battery Hardware Version LVESS02_V 1, Software Version LVESS0223901 N01. This is probably an old version. My USB-CAN Analyzer V 1.8 read data from both ports in the CAN-Monitor-3000 and USB-CAN (V7.20) programs. The IDs from both ports match exactly what you got from your batteries.
October 16, 2025Oct 16 Please help. I have a Deye battery and an inverter that only supports the RS485 protocol Pylontech or PACE. Is it possible to change the protocol in the Deye battery through the settings so that there is communication with my inverter. Or only with the help of a converter? Edited October 16, 2025Oct 16 by AndySu
October 19, 2025Oct 19 Author On 2025/10/16 at 8:32 PM, AndySu said:Please help. I have a Deye battery and an inverter that only supports the RS485 protocol Pylontech or PACE. Is it possible to change the protocol in the Deye battery through the settings so that there is communication with my inverter. Or only with the help of a converter?HiYou can change the parameters and protocol using this softwarehttps://github.com/Psynosaur/Deye_LowVoltageBmsUpperComputer/releases/tag/v1.18regards
October 19, 2025Oct 19 I finally got the battery monitoring working in Home Assistant. I used two ESP 32 to collect data. One runs on the Inter CAN bus, and the other on the PCS CAN bus. Edited October 22, 2025Oct 22 by ppwwdd
October 22, 2025Oct 22 Hi ZS1SCI! Thank you for the information provided on the forum. Currently I am monitoring my battery using Canalyst - II, Home Assistant via Inter CAN bus and PCS CAN bus, I also connected a NEEY balancer. Everything works fine. All that remains is to install Grafana. Thanks.
October 28, 2025Oct 28 On 2025/01/16 at 11:02 PM, ZS1SCI said:Hi thereYes i am using this device. What version of the LVESS CAN software are you running?Perhaps its outdated for your model of battery? Are you also running the same model of battery as I am? Im also on 2008 firmware. Cheers Can you share what type of adaptor do you choose in the program when connecting to the battery? I have 4 types of USBCAN but nothing works... I have Canalyst II, but no this option to choose. Edited October 28, 2025Oct 28 by stabias
November 5, 2025Nov 5 Author On 2025/10/28 at 5:53 PM, stabias said:Can you share what type of adaptor do you choose in the program when connecting to the battery? I have 4 types of USBCAN but nothing works... I have Canalyst II, but no this option to choose.Good dayThe laptop I used for this is no longer available, but I do believe the drivers was in one of these packageshttps://m.zhcxgd.com/en/col.jsp?id=108Regards Edited November 5, 2025Nov 5 by ZS1SCI
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