need help with wiring 6 x 2s LIPO batteries to BMS and charger

[lucid_layers]

dear friends,

I am currently working on a lipo battery pack for my racing board.
Because this is something that could being dangerous, I would like to ask if someone with more experience could comment my plans before I connect everything

I have 6 x 2s lipo batteries which I like to use as a 12s block.
I also like to charge the full 12s with a basic 50.4v charger from my other 12s (liion) skateboard.

To balance the cells, I plan to connect a 12s balancer between the lipos.
I attach images about my wiring idea.
Would it also be possible to use 2x 6s balancer? (second image)

the products I got in front of me:

• lipos : https://www.amazon.de/dp/B0B58XR4V2?psc=1&ref=ppx_yo2ov_dt_b_product_details
• bms 6s: https://www.amazon.de/Equalizer-Lithiumbatterie-Induktiver-BMS-Balancer-Energieübertragung/dp/B09P8JVB9Y
• bms 12s: https://www.amazon.de/gp/product/B0BC2CWTDJ/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

please correct me if I am doing something stupid here!!! I dont like to burn my house…

thank you for any help.

[glyphiks]

This is perhaps one of the most frequently asked and addressed questions on this forum.

Please use the search function before starting new topics.

Regular Michael's Smart BMS to LiPo Connection Walkthough

Hello Folks, One of the things that got to me early on when getting into esk8 was how a simple process of connecting a smart BMS to a couple of 6S LiPo cells should be and the number of forum posts that covered this topic in a complex way. So while there are a few great posts going around tackling this subject I wanted to put my own spin on it in an effort to see if I can simplify things a little. I’ve included a circuit diagram and a video walkthrough of me doing this process live! Yep, you …

LIPO Charge only Smart BMS wiring Guide

Alright folks, have some time on my hands so decided to make this guide. We are going to be wiring 4x 3s lipo batteries to a smart Bluetooth LTT bms (available on https://www.lithiumbatterypcb.com/ ) in charge only to make a 12s lipo. The goal here is to be able to monitor individual cell voltages from a smartphone and charge the batteries from a charge port on the enclosure and not have to take them out every time. This is the best solution I have come up with for flying with my board and tak…

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Main thing is how to wire it when it has 13 wires. 0 is Neg I get that its also black. Red is Positive or what I assume to be 12 or the end of the pack but RED is 13th wire. The balance wires have 11 WHITE. So with RED and BLACK I have 13. I assume to go from BLACK to 1,2,3,4,5,6,7,8 etc and make the last be the RED one. Im staring to think I should be going from RED then leaving the last BLACK wire on the LIPO open for the BMS connection to a C-.

Bms for 2x 6s Lipos

Hey guys i just picked up a 12s bms and im wanting to hook it up to my 6s lipos so i dont need to carry a lipo charger around wiht me on group rides, plug and run is what im after. i got an 8amp charger sitting around from my lion pack but i was wondering if their was anyone in melbourne who could wire up a bms with connectors for 2 6s lipo packs so i could plug and play.

Making an adapter to make 5 x 2s into 10s

True. I usually pull the extra metal plug out of the connector so that it can’t possibly touch anything. I use lipo packs with BMS units and I don’t like actually cutting the real balance connectors off, so I solder a male side on the other end, thus I can pull the pin out of the male side to forego that connection I get what you are saying though

[lucid_layers]

that is a massive answer, thank you @glyphiks for the links.
so anyone who is same stupid like me, may find this compilation in the future also helpful.

(I did some search here in the forum but seem like I have to improve my search skills)

[lucid_layers]

@glyphiks ok after reading the suggestd posts, I think that my wiring is correct.
But it would be nice, if you could take a look at the diagram and tell me if its ok.
4-eyes…

[Facko]

Iam did it according this. No issue. How to install electric skateboard BMS complete tutorial - YouTube

[lucid_layers]

thank you for that. @Facko
this is really easy to follow.

[glyphiks]

Your diagram looks correct to me.

What’s a little more concerning is that your BMS appears to only be an active balance board and is seemingly missing some other useful features that help keep our batteries safe.

Features & details

• This inductive active balancer: only compensates for adjacent batteries whose voltage difference is greater than 0.2V.
• If the battery error voltage is above 0.1V, the scale work will be started until the error is stopped at 30mV.
• The smaller the current, the static power consumption does not exceed 20uA.
• The built-in improved MOS with extremely low internal resistance, the balancing current is 0-1.2A and the battery voltage difference is smaller.
• Working voltage: 2.2 V - 4.5 V. High quality

Personally I’d recommend using something like the JBD/LLT smart bms. This one is my favourite at the moment

https://m.aliexpress.com/item/1005004879661293.html?pdp_npi=2%40dis!AUD!AU%20%2456.23!AU%20%2439.36!!!!!%402101d1b216750809397137830e11b9!12000030869191816!btf&_t=pvid%3Abd3c0387-5a56-4ee8-9571-1b859c303fce&afTraceInfo=1005004879661293__msite__c_ppc_item_bridge__xxxxxx__1675080940&spm=a2g0n.ppclist.product.0&gatewayAdapt=Pc2Msite

[lucid_layers]

@glyphiks

LLT smart bms

the link is not available in germany, says alibaba…
is this the one?:
https://de.aliexpress.com/item/33000199655.html?spm=a2g0o.productlist.main.9.f7994686OBWw7C&algo_pvid=54169566-878c-46d1-8189-fee36ceb03ec&algo_exp_id=54169566-878c-46d1-8189-fee36ceb03ec-4&pdp_ext_f={"sku_id"%3A"10000008618876772"}&pdp_npi=2%40dis!EUR!45.8!41.21!!!!!%40214527fd16750820010886487d06ca!10000008618876772!sea&curPageLogUid=mrcUoAezyYCq

[glyphiks]

Its not the same one that I linked, but it will do the same job

This one will offer several charge protections and also allow you to monitor the individual voltage and other information of your cells via bluetooth.

[lucid_layers]

ok. nearly done now.
everything is working fine. thx for checking.

i did 2x 3x2s
one 3s pack is soldered together and wrapped
the other is connected individually.

when the new bms arrives, i will change it.