[onegreenev]

I have an older model Zivan NG3 144 volt charger connected to the VoltPorsche. I currently have 21 Nissan Leaf Modules. Nominal voltage of the pack is 159.6 and max voltage would be 176.4. The Zivan does charge the battery but will not end the charge at the correct voltage of the battery. The Zivan can charge up to 190 some odd volts. I did notice that the charger went to yellow when it reached nearly the max voltage but not green. This sucker will overcharge the Leaf Modules even at that high voltage. I noticed that there is a cover over a small knob that can be turned but when I did I saw no difference in end of charge so not sure what it actually does. Is there anyone out there that can help with that? I found no manual that old that covers that adjustable knob. Below is a pic of the knob uncovered just below the indicator. I want to be able to use this nice charger for charging Lithium Batteries. Anyone have anything I can connect to this and is there a way to change the algorithm for different types of lead acid batteries or NiCad or what ever is in this charger. If I can get an old manual I can likely figure out what I need. I do like the charger.

 

[onegreenev]

The zivian should charge the LiFePO4 cells just fine. The zivian will just charge them. Keep an eye on the voltages and if you have a balanced pack it should stop charging and hold voltage. Just be sure no cell is over 3.6 volts for cell longevity. There is a surface charge after charging and when allowed to sit that will wick off and the cells should rest at about 3.35 volts per cell.

 

[onegreenev]

I charge to 3.45 then let rest which will be in the 3.33 to 3.34 v range. Even if you charge to 3.65 the cells will settle into the same range. There is little to gain by charging to any higher voltage.

 

[onegreenev]

Leaf modules are tougher because you can’t split the can.