Complicated? Currently using SolarAssistant to monitor everything but the batteries and aio do not talk.
JK BMS Deal AliExpress
- Thread starter TheHappyNomads
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I bought the components for about $20. It only works with one battery, can't string multiple together...for now. Took a few minutes to solder up and if you know how to work with esphome firmware and YAML configs, really easy. Good support from the crew building it. There are also other options out there by adding a CAN HAT to a Raspberry Pi. Here is the link: https://github.com/Sleeper85/esphome-jk-bms-can
There is confirmation it works with LuxPower as well as others, will know soon enough if that works with EG4 6000xp version. It plugs right into the GPS port on the JK.
There is confirmation it works with LuxPower as well as others, will know soon enough if that works with EG4 6000xp version. It plugs right into the GPS port on the JK.
Brucey
Emperor Of Solar
I'd still let the new comms version bake for a few more months to be sure it's solid. Versus the "proven" old design
Agree. Time will tell. Plan on setting up these new batteries as 2p16s with the older JK 200amp, 2a balancing. This DIY comms project I mentioned above is pretty cool with esphome. It does work with 6000xp. Had it running on a small pack.
timselectric
If I can do it, you can do it.
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I have no use for closed loop. So, I don't care if they ever get that one working.
If anything, it's just confusing everyone about the reliability of the original.
If anything, it's just confusing everyone about the reliability of the original.
Yeah. But is fun to mess with. I do like SOC setting better than voltage simply due to voltage sag on large loads and a charge phase happening when it’s really not needed.
The real reason I’m doing a 2p16s pack is I forgot to order additional +/- Busbar for parallel packs for my new batteries.
timselectric
If I can do it, you can do it.
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Solar Assistant gives % SOC.
That's due to smaller battery capacity.
I don't have any sag in voltage.
I would wait for the bus bars. But I'm a big fan of redundancy.
Brucey
Emperor Of Solar
Can I use my two in series with two 24V batteries for a 48V config? Thinking of smaller more manageable/moveable modules versus one behemoth 16 cell 48V unit.
Brucey
Emperor Of Solar
42OhmsPA
What's in a title?
My JBDs are just fine, my JBDs are just fine, my JBDs are just fine. Must resist the temptation!
Lt.Dan
Solar Wizard
Dang! Cheaper than the original post!
Well, may have to order another one as it looks like the old (<2yr) jkb2a24s20p no longer wants to communicate via rs485. No luck getting it to communicate. Bluetooth connects with the phone and everything looks to be working, just no comms with SolarAssistant. RS485 still works on all the other jks.
Anyone have something to try?
Anyone have something to try?
ScrotpusGobbleBottom
Corn Pop was a bad dude.
lol nicely put
timselectric
If I can do it, you can do it.
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Have you tried swapping adapters and cables?
Yep. Have spare rs485/usb serial adapters for a jic situation. Also swapped locations in the powered usb hub. No dice.
timselectric
If I can do it, you can do it.
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Sorry to hear that.
Hopefully it's an isolated incident.
I plan to end up with either 14 or 21 setup with Solar Assistant.
Really skrews with SA's calculations. Guess I'll have to pull the borked older jk and use one of the spare b2a20s20p. Then I"ll order another b2a20sp to replace the jic spare. ... or two. Been considering increasing the battery bank.
Hope swapping the old unit out with the new is as simple as unplugging one and plugging in the other and putting in the settings.
Hope swapping the old unit out with the new is as simple as unplugging one and plugging in the other and putting in the settings.
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May be pulling the trigger soon on more cells. Went to order additional jk bms's and the price is back to $110. Anyone have a lead to a better price?
Oops! Looks like they are out and no longer selling these units. Does someone have positive experiences with another Aliexpress storefront?
Oops! Looks like they are out and no longer selling these units. Does someone have positive experiences with another Aliexpress storefront?
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Brucey
Emperor Of Solar
Hankzor store doesn't have, but jkbms store does:
Have you had good luck with this seller?
Brucey
Emperor Of Solar
I believe it's just a rename of the hankzor store. Basically it was the official outlet for jkbms and they've changed the name to reflect that. But haven't bought from them yet.
Brucey
Emperor Of Solar
I did buy two from hankzor no problems ended up coming from an address in NJ.
Thanks.
Yeah, bought 4, or was it 5, bms's from the Hankzor store without issue, but I'm a wee bit leery of aliexpress and wanted to go with a proven storefront.
Don't have to have them right at the moment, just wanted them ready whenever the new cells arrive. Also, nice to have a couple spares around JIC one suddenly stops working, like the last one.
Waited around a bit before ordering and found the jkb2a20s20p for $96 from the Hankzor BMS Store on Aliexpress. Catch was, you could only order one at that price. Waited a day and ordered another unit for the same $96price. Both units arrived today. 9days shipping, not bad.
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