InMyImage
New Member
- Joined
- Nov 17, 2020
- Messages
- 146
I have 8 Lishen 272ah cells and 2 Daly 250amp “Smart” BMS’s
Initially I’m focused on making 1 12v battery pack and then once I know more about how it is going to behave, I’ll build the second one.
On these cells the Black terminal is positive and the white terminals are negative, white heat shrinked balance wire is the first cell negative.
I have my cell busbars and balance wires connected as:
Each cell’s individual voltage is approximately 3.285v
Total bank is 13.06v
When connecting the Daly BMS I do the following
Connect balance wires
Connect Bluetooth to UART plug
Connect temperature probe
Connect Blue BMS Negative to battery main negative
Short Load negative with battery negative, unlike Will I used the load negative wire lug to the main battery negative terminal.
When shorting the BMS nothing happens to give any indication that the BMS is live.
When I test after connecting everything I get the following voltages
Main positive directly to main negative : 13.06v
Main positive to BMS battery negative : 13.06
Main positve to BMS load negative : 10.25
Nothing appears to go live with the bluetooth
So any ideas? I’ve tried both BMS’s and the result is the same.
Initially I’m focused on making 1 12v battery pack and then once I know more about how it is going to behave, I’ll build the second one.
On these cells the Black terminal is positive and the white terminals are negative, white heat shrinked balance wire is the first cell negative.
I have my cell busbars and balance wires connected as:
Each cell’s individual voltage is approximately 3.285v
Total bank is 13.06v
When connecting the Daly BMS I do the following
Connect balance wires
Connect Bluetooth to UART plug
Connect temperature probe
Connect Blue BMS Negative to battery main negative
Short Load negative with battery negative, unlike Will I used the load negative wire lug to the main battery negative terminal.
When shorting the BMS nothing happens to give any indication that the BMS is live.
When I test after connecting everything I get the following voltages
Main positive directly to main negative : 13.06v
Main positive to BMS battery negative : 13.06
Main positve to BMS load negative : 10.25
Nothing appears to go live with the bluetooth
So any ideas? I’ve tried both BMS’s and the result is the same.