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Small Cabin Forum / Off-Grid Living / Valence LiBattery
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paulz
Member
# Posted: 1 Dec 2019 11:11 - Edited by: paulz
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Quoting: somewhereinusa
I think it's there but covered up by screen resolution maybe?


That must be what it is but there is no zoom or unzoom like a browser. Haven't found a way to change it other than changing it in for the whole computer. Thought I read on another link that the software runs on Android, would you mind checking where you got the Windows download to see if an Android version is available? I don't have anything Windows at my cabin.

Been reading the user manual a bit more, found these regarding minimum voltage. If I have it right, the normal range is down to 11.2, warning range down to 9.2 and alarm below that.

And again thanks for making this available to us.
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somewhereinusa
Member
# Posted: 1 Dec 2019 15:07 - Edited by: somewhereinusa
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Since the Valence batteries don't have any protection built in (only cell balancing), I've designed a protection system. It will totally disconnect the battery bank from everything if things go awry. It will also turn on a compartment cooling fan or turn on a heat pad if called for.
I have it bread boarded and the code written. For you coders out there mine is probably a bit clunky but, it works. Not really necessary but nice for a bit of bling I'm working on a screen to see what temps and voltages are.



somewhereinusa
Member
# Posted: 1 Dec 2019 15:30
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Quoting: paulz
would you mind checking where you got the Windows download to see if an Android version is available? I don't have anything Windows at my cabin.

The link I got it from is gone and I haven't seen anywhere else. I've only seen windows. I'm assuming that when Valence finds out I'm sharing they will make me take it down.

paulz
Member
# Posted: 2 Dec 2019 10:09
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Quoting: somewhereinusa
Since the Valence batteries don't have any protection built in (only cell balancing),


My understanding from the manual diagram I posted above, 'stand alone' means the battery is not connected to a BMS, and Shutdown means it will turn off contacts if cell voltage falls below 2v. Is that not correct?

somewhereinusa
Member
# Posted: 2 Dec 2019 10:31
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I think the internal BMS only does cell balancing. The UBMS, the unobtainable box that Valence won't sell to the likes of us, takes the information from the internal BMS and uses that information to control charging/discharging and safety disconnect. I bought one of the control boards out of a truck. It had a UBMS and some really nice 500A solenoids. Unfortunatly the UBMS was the high volt model and not something I could use.If I knew how to read the data from the CAN bus I could control my stuff from that data.
I'm just using external sensors to accomplish the same thing(I think). I'm not able to read cell banks, just the entire battery.

TataSafari
Member
# Posted: 7 Dec 2019 03:32 - Edited by: TataSafari
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Hello I have the software and made a conection with my Valence U27-12XP 138AH mine is the first gen but this is the same for the 2nd gen batteries i am using windows 8.1 DO NOT try to charge the battery without this hookup first as you have no way of knowing what state the battery is in guessing is the way forward

i will down load some screen shots on sunday

jpmelliott
Member
# Posted: 13 Dec 2019 13:11
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Hi All,

I have 8 U27's and have built a connector but need the software could someone that has the software possibly share it, or point me to a location that has it?

Thank you!!

jpmelliott
Member
# Posted: 13 Dec 2019 14:47
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Hi All, please disregard my ask. I found the software. Thnx!

jpmelliott
Member
# Posted: 13 Dec 2019 14:53
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Since the lack of a BMS controller is an issue for all of us with Valence secondary use batteries, I wanted to share that there is a company that is going to be producing a replacement for the Valence BMS.

I talked to them yesterday and they should be shipping at the end of January 2020. They need to program the BMS to your specific configuration, just a Valence did for there OEM solutions.

Also, for those with Victron, they were indicating that they would be releasing a Victron integration. Pretty sweet!

Last, they also sell used U27 Valence batteries. They are $499. I know that's more than ebay but, it includes shipping AND a battery life/health print out.

I bought mine from Ebay but, if I was to do it again... I'd have gone with these folks as my seller was very vague as to the battery statistics.

paulz
Member
# Posted: 15 Dec 2019 11:18 - Edited by: paulz
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I took my battery off the charger yesterday, been sitting unused. Plugged it into the software just now, this is what it says. First time I have seen 'balance active'. Obviously cell 1 is different from the others..
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somewhereinusa
Member
# Posted: 5 Jan 2020 11:52
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There is a guy on DIY solar forums that has successfully communicated with the Valence battery.

[URL="https://diysolarforum.com/threads/interfacing-with-valence-built-in-monitoring. 2183/"]https://diysolarforum.com/threads/interfacing-with-valence-built-in-monitoring .2183/[/URL]

His github project.

[URL="https://github.com/t3chN0Mad/OpenXPBMS"]https://github.com/t3chN0Mad/OpenXPBMS[ /URL]

I'm waiting for some parts now.

paulz
Member
# Posted: 5 Jan 2020 15:58
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I thought we were already communicating with the battery with the software you provided?

somewhereinusa
Member
# Posted: 5 Jan 2020 16:47
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We are. With this we can act on the information such as using the internal temperature sensors to turn on/off things and setting limits using the internal individual cell voltages.

paulz
Member
# Posted: 5 Jan 2020 21:28
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OK. I read what he's up to in the links, way above my pay grade. But keep us posted on your progress, never know. Thanks.

dr67
Member
# Posted: 11 Jan 2020 16:19
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Fantastic info on this thread. I was able to communicate with my Valence 27 xp batteries. All 4 are balanced. I have noticed that the State of charge doesnt really change on the valence software. I am charging the batteries individually right now just to see if it changes, but it does not. I drained one down to 20% and the state of charge will go down with the software, but will not show state of charge going back up. My Victron Battery monitor does show the charge % going up, and the batteries are taking a charge. Has anyone else seen this?

somewhereinusa
Member
# Posted: 12 Jan 2020 08:41
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I can't say for sure, you may need to cycle them a few times. Valence manual says the bms "learns" .
Mine more or less agree with the Victron monitor.

dr67
Member
# Posted: 12 Jan 2020 15:59
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I was curious today so I tested 1 of the batteries. SOC was showing 13.73% charged and I ran a 65 amp draw on one of the batteries for 60 minutes and still had plenty of battery. So I know that the 13.73% is not correct.

paulz
Member
# Posted: 12 Jan 2020 18:04
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Your talking about the soc field on the Valence software? When you got down that far was the green light on the battery still blinking?

I have only been spending one night a week at my cabin lately (cold and wet), I don't think my battery even knows it's been used.

dr67
Member
# Posted: 12 Jan 2020 20:28 - Edited by: dr67
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yes. Green was still blinking. And yes the SOC in the Valence software. Battery never dropped below 12.68 volts under load.

paulz
Member
# Posted: 20 Jan 2020 11:50
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Ran my cabin for 24 hrs. a couple days ago, not a lot of drain, 2-3 LED lights, couple of USB tablets, water pump some. Dang battery still says 99%. I don't know...

Anyway what I really wanted to ask is:

A lady gave me a charger, said it was 12v from an E bike. I could only find one reference to an HP8204A, on Ebay. Says it's 12v but I am skeptical. Lots of references to HP8204B at 24v. I thought I might leave this charger at the restaurant down the road from out cabin in case I needed to charge my battery without going back to the city (where my main charger is).

It does not say what the output voltage is on it, so I hooked it up to an old half charged 12v battery. Within 20 seconds it had gone up to 17 volts on my DVM so I unhooked it. That's too much for a 12v Lion charger, right?
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somewhereinusa
Member
# Posted: 20 Jan 2020 16:22
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Yes that's too much. Do you have more than one battery? You could hook two in series for that charger. Although 24V at 5A is going to be slow and you won't get a full charge at 24V. You should be able check voltage with a voltmeter between the charger leads.

paulz
Member
# Posted: 20 Jan 2020 22:34
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I am heading to LA this week, the Ebay seller has them on local Craigslist down there, might stop by and pick up a second battery, no shipping or tax.

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