Suppliers of 18S BMS?

[Punx0r]

Are there any suppliers of LiCo ~50A 18S (or 20S) BMS other than BesTech? Someone more retail-oriented?

There's nothing on ebay and I've trawled the net and the search function here. All I find are weak-sauce <14S and/or lifepo4 units.

The problem with BesTech is the MOQ = 2, no pricing and, mostly, because they've removed the over-current spec from their baffling range of products...

 

[wesnewell]

http://www.aliexpress.com/item/Free-Shipping-48V-80A-BMS-14S-48V-li-ion-battery-BMS-PCM-80A-continuous-200A-peak/32590307155.html
http://www.aliexpress.com/store/group/Battery-Management-System-BMS/313864_259134332.html

 

[Punx0r]

Thanks, Wes. I get confused between Aliexpress, Alibaba, Taoboa etc so those links are helpful.

The first one looks good if I can fit it in the frame (need to check): http://www.aliexpress.com/item/Free-Shipping-48V-80A-BMS-14S-48V-li-ion-battery-BMS-PCM-80A-continuous-200A-peak/32590307155.html

The second one looks OK, but no detailed spec, but this one looks similar and with full spec: http://www.aliexpress.com/item/72V-electric-motorcycle-Lithium-Ion-battery-BMS-and-20S-84V-Li-ion-Battery-PCB-with-60A/32603192954.html

I searched around a bit and also saw a small one (if space is an issue) - 20S 40A cont. 150A cutoff: http://www.aliexpress.com/item/Free-shipping-20S-72V-battery-BMS-PCM-3-7V-Li-ion-LiPo-battery-BMS-40A-continuous/32283939494.html

I only found one 18S unit: http://www.aliexpress.com/item/18S-75-6V-Lithium-ion-battery-lithium-polymer-battery-BMS-with-Max-60A-constant-discharge-current/32311499040.html

It looked pretty good until I got to the 5A max charging current


I'm kinda assuming that the 20S units will all work on 18S if the spare channels are just left disconnected...

 

[gomme600]

Hi, I have a homemade ebike with a 18s8p battery. (75.6V, 16AH). At the moment I have to remove all 6 battery packs (It is made up with 6 homemade 18650 packs: 6S4P, 25.2V, 8AH) and charge them using my rather slow accucell 6 charger. I would love to be able to just plug the bike in when I get home and have it charged within a few hours (It takes over ten hours at the moment!).
I am also having a hard time finding a 18s BMS, can anyone confirm that a 20s one would work?
What about this one? https://fr.aliexpress.com/item/20S-72V-84V-li-ion-battery-BMS-PCB-72V-lithium-battery-with-25A-constant-discharge-and/32238809349.html?scm=1007.13339.33317.0&pvid=66005194-26ce-481b-a756-a6aa3b972c09&tpp=1

Thanks,
Seb.