Vitaliy

Thanks! I have no idea where WatchPower shows display firmware version, but according display itself it seems compatible.

Hi mate Thanks for good news! Where, btw, did you get the firmware? I need for King I. Not sure that from VM III, VM IV, and MAX (referred in the video) is compatible with King

So I bought cable, connectors, 2 rj45 outlets to easier testing and prepared today 3 cables. 2 cables with 87b->35i pinout 1 cable with 12b->35i pinout Results 1. Cable 87b->35i to port B/rs485 on pylontech. Connection timeout. Error 61 2. Cable 12b->35i to port B on pylontech. Connection timeout. Error 61 3. Cable 87b->35i to port A/can on pylontech. Connection firstly seems established. Battery sigh began blinking. But immediately after that it shown error 04 (low battery), and after a minute error 61. It changed settings 26 -> 48V 27 -> 48V 29 -> 0V max charging current -> 10A 4. Cable 12b->35i to port A on pylontech. Connection timeout. Error 61 So no luck with connecting. Returned again on USER battery type.

Yes, it's enough powerful. But it's difficult to find a low power generator that frim factory designed to be used with solar inverter instead of with just ATS to be direct automatic replacement of grid. Also take in consideration that more powerful generator you quicker charge your batteries ans shorter listen the noise. And will not be limited in powerful loads (water heater, microwave, etc) during batteries charging.

As an example https://genergy.es/english/creta-sol-electric-generator/

Thanks, mate As far as I got from the video without knowing language is that he solved 61 error issue by flashing fresh firmware to display box. Update from some too old version to 102.73. I have 102.71 and have exactly the same cable. It's possible that a bug still exists in 102.71 and fixed in 102.73, but I'm not going to upgrade firmware in near future. Need to keep workable solution even if it not perfect. Will just try to play again with what I already have in hands.

Yes, you are right, mate. My bad I just bought 2m patchcord and cut one side (to inverter). Then cut all wires except brown pair and crimped new connector. Just checked the cable again right now. 8b connected to 3i and 7b to 5i (b - battery, i-inverter). As I think should be. No shortcut between wires in the pair. Have no idea why it doesn't work. Maybe will play again with this on weekend. Ps. It's interesting that in us5000 manual in description of pinout of link ports they said to not use 1-3 pins because it may interfer communications with inverter. So it may brings up idea that us5000 uses 1-2 rs485 pair for inverter.

I have no this inverter, but was reading documentation, reviews, watched videos etc A few guys reported on YouTube that the inverter wan't charge batteries from a generator. Other said that it probably because of unstable frequency of the generator. Most problems with cheap China's generators with AVR. European models seems work good. And if you have generator with inverter output then all should be ok. Btw, more expensive competitor of luxpower who has additional generator power port is Deye. But it about 50% more expensive.

Be careful with workload. Brand shop on Aliexpress only declared charging current as 0.5C. Discharging current not declared so it could be same (50A). In that case you will not be able to get workload over about 1200W. Also item description on this seems official store says nothing about sequential connection batteries.

May be. I changed cut-off value to 46v as you suggested and now it indeed works not bad, I even turned on alarm sound. So going to leave it as is for some time. I will try to make cable 1,2->3,5 as I saw here on forum. But not nearest days. Today a couple of grid infrastructure objects got a damage again. So not the best time for experiments.. Need workable solution during waiting a few days to ensure that energy company will maked required repair and outages stabilized

I have the same problem. Axpert King 5000 + Pylon US5000. Cable 7,8 battery side to 5,3 inverter side doesn't work. Inverter shown 61 error and resets voltages. Have you solver the issue?

Made the RG45 cable. as described here pinout from US5000 manual: So I connected brown 8 to 3 on inverter side and white-brown 7 to 5. Checked cable with tester. Seems ok. Of course set 9600 bps. And it still doesn't work... After switch to PYL battery it waits for about 3 min and shown error 61. Voltages resets to 26->48 27->48 29->40. SOC->100% I tried both port B and port A on battery side. So returned to USER battery

Thank you, mate! I going to make a proper rs485 cable, just need to buy the rj45 crimper tool (my is too old and isn't working well), a 2m patch cord and I already have connectors. Hope with the right cable all will work as expected without tricks with voltages. Not sure if it is safe for the inverter when BMS will cut-off itself on low voltage. As far as I remember King is not declared as capable to work witout a battery. But last weeks we have +- predictable outages. It's about no more than 6h grid outage and not less than 3h grid on in continue. So in these conditions, I haven't seen the battery had discharged more than 2 LEDs of 6 (~67% SOC). The discharge current of the battery when it feeds my house is usually an average value 3-5A. So it looks too far from battery cut-off in such conditions, at least until our electrical infrastructure will get more damage from yet another hit or something will get broken and schedules will become stricter.

Thanks for reply, mate Pylontech bms, as I got, cuts off at 44.5V. So 46V in this case is defenitely higher. it a bit higher then 10% soc (3.0v per cell), something about 12-13%. I just not understand why pylontech recommend so high value, 47.5V (3.17v per cell, a bit less then 20% soc) I used a table from this article https://www.takomabattery.com/understanding-and-apply-of-lifepo4-soc-chart/ I just saw a few videos on YouTube where guys made diy batteries and they used 16s schemes. A small company here seems also use 16s for their self made batteries. So I thought that 16s should be in factory-made batteries too. It was a surprise to me that it is 15s I'm pretty newby in this area, so a lot of lacks in knowlenge :)

Hi guys Yesterday I setup system with Axpert King 5000 and Pylontech US5000. Main firmware 72.00, bluetooth 00.24 No solar panels, just for work as an UPS. The RJ45 cable from the battery cables pack doesn't match (got error 61) so I just setup battery as USER type. Voltages are: 12 - 48 13 - 51 26 - 52.5 27 - 51.8 29 - 47.5 So the battery charged full and all 6 leds on the battery are lighting. The problem is how inverter show SOC and warn about low battery. First problem: Just in a minute of discharging after grid outage inverter show 50% SOC. Is It normal? As I understand it's because the inverter doesn't properly know LiFePO4 discharging voltage curve. Wil the inverter show SOC properly after I will connect rs485 with proper cable? Second problem: After a 40 min battery voltage drops to 49.6V (afaik it's ok for 15 cells battery for less then 5% DOD) and inverter shown 19% SOC. At this moment it begun to alarming with error 04 (low battery). At the same time the battery still show all 6 leds on (so it's ok). Right now I just disabled this annoing buzzer. So, how to properly set inverter settings to stop alarming when the buttery still almost not discharged yet? Will it be fixed after connect rs485? Thanks in advance! PS. right now, after 50 min it shows 49.7V and 20% SOC

Hi bro Just installed Axpect King 5kw + Pylontech US5000 here. I didn't know that it required custom rs485 cable (as I found original from the battery cable pack is not match). So I used your values to define is as USER battery type. Thank you so much! But I like to know where you got these values? Does 46V cut-off is not too low for such battery? Is it safe? 26\27 it seems you took from this page https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom Btw, why they said that Pylontech has 15 cells when usually, AFAIK, LiFePo4 batteries use 16 cells Thanks in advance