Don B. Cilly

I can confirm that the BMS works fine without any booster.

Right, thanks. I have been assured by BMS experts that newer models don't need any booster, you just connect them as shown. I bought mine from Shenzhen Luyuan, together with the cells, I should get them in a week or so. BMS, $65, display, $13.

I really have searched here and pretty much everywhere... the more I search, the more confused I get. I asked for a 100A BMS with active balancer for 8s (24V). The vendor suggests a JK-BD6A20S10P. $65, which sounds good. Except, it has pins for 20 cells, not 8. Trying to find out the proper way to connect just 8 cells, I really get confusing and conflicting information. Some people say, just connect the first 8 pins. Some say, yes, but connect the last pin (B8), to B1 as well. Like so: But then some say, pretty much, No! Don't do that! If you do that the BMS will shut off, you'll cause a chain reaction which will EMP everything for a 69 miles radius, your neighbours will be mighty pissed off, the Central Scrutinizer will... er... Now, the manual I found for that BMS, does suggest that type of connection, but says: "If use the BMS for lower voltage than 36V, pls use the booster together." And "12v battery, use 12v to 48v booster, 24v battery use 24v to 48v booster." I asked about the booster, drew a blank. So, do I need the "booster"? Can I make it myself? If it's just a low-current 24-to-48 converter, it's easy enough. Does anyone know?

Tch. No luck. Maybe the UP2500s have a different code? :·/

No, but it looks like you did. How?

Greetings from Ibiza, Spain. I'd like to ask, I type sudo screen /dev/ttyXRUSB0 1200 and I do get a screen. Blank. I can't paste anything in there. If I use 115200, I get a screen full of scrolling gibberish and no prompt. Any suggestions?