Problem solved! You need to have main big leads from BMS hooked up and everything is good now. View attachment 29305
No, the silver aluminum model...Good
Glad you've got it working. Is yours the new shorter black annodized model ?
View attachment 29314
How are you using yours?
Good
Glad you've got it working. Is yours the new shorter black annodized model ?
View attachment 29314
sure would be nice if the mfr or someone could translate to englishMy 200A BMS' have arrived from China, I ordered from Shenzhen E-Fire Technology Development Co., Ltd on Alibaba.
The listing's photos were the same as above / ebay / etc.
This unit is massive, almost the size of a 1L carton of milk, probably the size of a CALB grey 3.2V cell.
4.65cm * 11.77cm * 23.7cm
View attachment 20968 View attachment 20969
The cables are 11mm diameter with shrink wrap protected M10 hole copper lugs. The cable itself says 4AWG 200 deg C.
The Aluminium extrusion and end caps have scratches and scuffs of about the same cosmetic appearance that a Bitcoin ASIC miner arrives from China.
There are no mounting holes, unlike the advertisement picture and no opening/flap on the top.
Lily provided me with some manuals and wiring instructions for 8s, which were all in Chinese. I asked for the BMS leads to be labelled, which was done.
My batteries are still en-route by sea, and the battery boxes are to be fabricated. This BMS is so big it might not even fit inside the metal boxes I've ordered from Shenzhen Xuba with 8s 280Ah.
View attachment 20970
Here are the wiring documentation recieved.
View attachment 20973
My friend sent me this translation
And for this second image , the translation
View attachment 20972
View attachment 20976
With the leads pre-labelled by Shenzhen E-Fire it looks pretty self explanatory.
There are 22 wires from BC0-BC21
BC0 (wire #1) goes to cell 1 negative
BC1-BC5 go to cells 1-5 positive
BC6-BC18 go to cell 6 positive
BC19 goes to cell 7 positive
BC20-21 go to cell 8 positive
Interesting, wonder why?The next revision after the black enclosure models sell out will have a different relay, still JBD with Bluetooth but no enclosure.
View attachment 30802
Hopefully more current capability or less standby usage , time will tell.Interesting, wonder why?
The next revision after the black enclosure models sell out will have a different relay, still JBD with Bluetooth but no enclosure.
View attachment 30802
That is called "Split Port" which has one DC line for output and one DC line for output, independently controlled.do you know if this version is bi-directional?
I mean, can you cut the charge and discharge separately.
I understand.That is called "Split Port" which has one DC line for output and one DC line for output, independently controlled.
Common-Port is the most commonly used type of BMS for ESS Systems. These use the same DC line for charge & discharge.
I understand.
But can this particular one cut the charge and / or discharge separately?
Thank You!
It appears that you can, in the xiaoxiang android app is shows on the bottom left Discharge on/off and Charge on/off.
When you hit the cell overvoltage protection limit, the cell protect is enabled and Charge Off state is set.
In xiaoxiang there is a menu screen to enable/disable features like balancing, temp probes. In this page flipping the "switch" toggle sets Discharge Off.
I can test that in a few days time to see if it actually works (without needing external hardware). Note I only have the silver and black enclosure models, not the new revision without enclosure.
I understand.
But can this particular one cut the charge and / or discharge separately?
Thank You!