[pdove]

These chargers have lots of options. First we need to know how it is programmed. Can you take a picture of the lable on the side with the charge curves. They can be set for different number of cells and thus change the output voltage. The LED will flash red several times when AC is first connected, then the LED will flash green once. The number of red flashes denotes the present curve. e.g. If the red flashes three times, it means the present curve is curve 3, and so on. 10 charge curves are only available for volume order instead of sample order. To choose another curve, please cut off the power supply first, then uncover the label, pressing the button while connecting the power. If you want to choose curve 3, release the button after the 3rd LED Flash.

 

[pdove]

I watched the LED when I plugged in the charger the red LED blinked 8 times. When I bought the charger I asked the if the charger was programed right for my project and he said it was programed perfectly for my battery pack. So I decided to try and charge the pack after a few hours four batteries BMS boards had a RED LED on them and the alarm was going off on the charger or BMS system is that normal? I have always charged the pack with a balancing charger one at a time and had the same results.

So..... is there a label on the side that describes the curves and what does it say if it's there? It looks like this.... The voltage output is determined by the number of cells specified in the curve you selected.

 

[pdove]

It means 45 cells charged to 3.5 volts per cell for 157.2 volts max so it looks like the charger is working and the problems in your BMS

 

[pdove]

Sorry, I don't have a BMS and never used one. Didn't it come with instructions. I would start by reading the manual.