I left you a PM.Yeah I've been wrestling with windows drivers and trying to find the software and all the .NET stuff.
I just had the same problem. Thanks so much, this fixed it!I've had the same problem before. I was able to clear the red light and error by opening the access to the balance board, and disconnect the balance cable for a minute, then reconnect it. As long as the error is not still occurring, it should clear out.
Is this really all it takes to add an external BMS to these things!!??? I have two in parallel.I purchased some gently used U24-12XP batteries and wanted to share my positive experience modifying/using these with a non-Valence external BMS.
First I opened the side waterproof compartment to locate the 4S balance wires:
View attachment 107578
Was very happy to see it was similar to a traditional 6S JST balance connector.
View attachment 107579
So I removed the proprietary Valence BMS cables (saved them) and pulled the JST-like connector through the same hole. Then I sealed up the holes to make them waterproof again. All of this is removable and the battery can be returned to the factory Valence configuration easily.
View attachment 107580
All sealed up and ready to be connected to my BMS of choice!
View attachment 107581
Some initial cell readings before charging/balancing:
View attachment 107582
Yup! That's all it takes. I'm currently running an ANT BMS with 4 valence batteries (16s) in series.Is this really all it takes to add an external BMS to these things!!??? I have two in parallel.
Same here. I've been postponing this project for a couple years now. It will take me some time to catch up with the discussions and research shared in this and other threads. Everyone's generosity is greatly appreciated, hopefully I'll be able to give something back to this community once I make can make some progress on my end.Thank you for running this thread.
I have 8 of these that I bought new a long time ago, along with all of the control stuff.
Got pretty far but had to put the project on hold - time to re-start.
Thanks
Since you have the Gen 1 with the M12 connectors and you got it to connect to your computer I am wondering if you would share the pin out for the USB connector, I just bought 8 of these and need to stop the red lights flashing. Thanks in advance for any information you may share.Travis,
I'm a lurker here following this thread. I have 10 U27-XP's Rev 1 (black with M12 connectors) batteries. I have Ver 12.12 of the software and have 4 modules in an RV and 4 in a sailboat. The RV batteries have dipped into the low voltage cutoff area at one time (and turned the led indicators red) and this had me searching for a solution not to destroy my batteries. Here I am. When I finally got the software to work on my laptop, I connected to my RV batteries and one at a time got the red led to change to green! The sailboat battery bank of 4 have behaved nicely: not much use yet.
Anyways: You got a U-BMS HV to work with a low voltage battery bank? Or - you have a LV version? Please elaborate. As stated in this thread, there are a lot of U-BMS HV units for sale but not the LV version.
One of the guys in the thread here sent me this. I was never able to get the version one BMS to connect to any software with it but it might be useful for you.Since you have the Gen 1 with the M12 connectors and you got it to connect to your computer I am wondering if you would share the pin out for the USB connector, I just bought 8 of these and need to stop the red lights flashing. Thanks in advance for any information you may share.
I think the Module Diag program you refer to only really works with the 12v and 24v versions of the batteries, I too have the 36v version and I have managed to set the battery ID's with the program but that's all it will allow.Hi all, thanks for the fantastic resource you have all built in this thread. It has allowed me to get setup with the Valence tool with a USB/RS485 adapter for reading the state of my batteries.
I have a bunch of U27-36XP packs which I've used for some time for gentle charging and discharging but have never connected over RS485.
On attempting to do so (following all instructions available) I get a 'no battery found' error from the Module Diag program. I can see from my RS485 adapter there are no RX comms, only TX whilst the app is searching of batteries. Has anyone experienced this before?
Thanks
What are you doing with 180 volts? I'm off grid and my inverter uses 516 volts so I've got 38 of the 12 volt batteries in series. It's just rare to see people using higher voltage so you got me curious.I think the Module Diag program you refer to only really works with the 12v and 24v versions of the batteries, I too have the 36v version and I have managed to set the battery ID's with the program but that's all it will allow.
Out of interest would you part with any of your 36v batteries ? I have 10 set up in a 5s 2p configuration and id like at least 5 more maybe more!
Cheers
Matt
Hi TravisWhat are you doing with 180 volts? I'm off grid and my inverter uses 516 volts so I've got 38 of the 12 volt batteries in series. It's just rare to see people using higher voltage so you got me curious.