It’s because there’s a voltage drop on the b0 and b12 wires as the charging current is going through. You shouldn’t use the balance leads for charging since then the issue you’re having is inevitable. I’ve done the same mistake in the past. You should connect two more wires to be used for charging.
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@janpom I recently bought a devega x to use with a LaCroix LSSS (18s8p). Do you have a suggestion as to what I would need to install/add to monitor cell voltages on the davega x?
You would need to replace the BMS. Ennoid XLITE-24 is your best bet.
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Quick question, I want to make two batteries connected parallel is there usually a big difference in voltage between the two packs if I use a different BMS ?
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Your question doesn’t make sense.
There are endless things you shouldn’t do.
You have to be more specific on your plans and we can help you.
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There can be a huge difference. Different BMS’ can have different settings and may have stopped a charge or discharge at a very different voltage. Do not try to parallel packs unless you have a voltmeter/multimeter to measure the voltages with.
It’s possible to check using the apps each BMS might have but it’s always better to actually confirm the voltages at the connectors.
As @Fosterqc mentioned, telling us a lot more about what you’re hoping to do would help us give you the best advice.
I finally finished my board and charged it up. I’m using a 10s3p (Molicel P26A) with Smart BMS. Flipsky 4.2 and single 6374 motor. Is it normal/ok what im seeing in the app:
When i first conected via Bluetooth:
while charging, one group was read and one grey. Is that diference in Voltage still ok? why is it red.
Then, wihile driving for the first time, some groups drained lower than other. Is that normal or do I heve some bad cels, or some other isues?
See video.
The grey and rhe red just indicate the lowest and highest voltage cells.
Your delta doesn’t seem to be deviating more than like 0.02v, nothing to worry about dude
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Thx man. I was probably to paranoid after watching some of the videos of batterys going up in flames.
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Hey, I have another stupid question. The BMS is wired for charge only. Does this mean a can’t us it to se how much charge is still left in it? I rode my board for 20 km and it still shows a 100%. I know the individual p group voltages are displayed but I was really hoping for something like %
My remote (Flipsky VX2) also just shows a bar without any percentages.
That percentage fuel gauge in the app is weird.
You need to set the Ah of your battery correctly in the app for it to work and even then you may need to tweak it.
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I think you also need to disable “detect load” or something similar in the bms settings.
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Didn’t find any setting like that. But I found somewhere on the forum, sorry can’t remember where that you have to set the numbers of cells again. It was 10, but than I “changed” the vale to 10 and now it works. Some sort of bug I guess 
Hope that helps somebody on day 
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Xiaoiang/JBD/Apex BMS + ESP32(esphome) + Display (work in progress)
Cheap and ez display for your cellgroup voltages and such. Connects over ble to the bms.
Could also be edited to show all cellgroups at once with a bigger display but I don’t have that
Pm if you want some code examples
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Anyone order one of these LTT smart BMSes recently?
I placed an order for one about a week ago and complete radio silence. The order confirmation email came right when I placed it but nothing since. No tracking, no shipping notice, nothing.
Tried to contact them via their Skype option but no reply there either.
My last order took a few weeks to fulfill. Shipping from China.
I’ve ordered from them a lot and never received any tracking or anything. They usually show up after a few weeks. Only had one order out of at least 10 that never came
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Sounds good. I’m not in a rush, I have a way to balance charge until it gets here. Thanks guys.
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One of my P groups just diped below 2.5 V while riding. I started pushing my board as soon as I noticed. Its currently sitting at 2.168 V. As I was writing this it droped even furteher, then I puled my loopkey and it went beck up to 2.68 V. Anybody have an idea what could be wrong? I know I shouldn’t recharge the battery. What shuld I do? Check the balance wires first. It’s a NESE 10S3P p26A cells.
2.168 V is bad but if it only happened once and the battery didn’t sit at that voltage for a long time it’s not a disaster. I recovered batteries from lower voltages. Try to charge it with a low current and keep an eye on the p-group voltages while charging. Disconnect the charger immediately if anything looks out of ordinary.
The sudden raise from 2.168 to 2.68 V is suspicious. At any rate, you will want to handle that battery very carefully.
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