I have recently added an Orange Pi3 LTS to connect to my AliExpress 48v 155AH Battery and separately to my Voltronic Axpert VM IV Inverter 5600w 48v.
I purchased SolarAssistant software from South Africa and loaded o n the Orange Pi3.
I have found that Software far more effective at managing my Battery than the Inverter. Setting the Inverter to Lib (Li-Ion) caused all sorts of OV problems and often my Battery would jump from 85% SOC to 100% SOC because of Cell 7 getting to 3650mv whilst the rest were at around 3380mv.
I'm looking to add a Neey Version 4 Battery Balancer on a temporary basis to see if it can settle down Cell 7.
@mevil480 I can't see how to add a picture on here!!
Looking at the photograph you uploaded with the Battery and Balancer - looking at the wires going into the back of the BMS, am I right in thinking that the Cell 1 cable is on the Right Hand Side next to the Black negative cable and the Cell 16 cable is on the Left Hand side as you look at your picture.
I have had the top cover off the battery and measured the voltage across each string which confirms that the red cable nearest the -black is indeed Cell 1 and the furthest away Cell 16.
I measured the voltage on each cable to ensure that they were in sequence. When removing the connectors I immediately saw how easy it is to plug straight into the Balancer Board.
I have received a second of the AliExpress JOSMA 48v 155AH Batteries and it appears to be behaving slightly different. On checking it appears that the firmware may be different but I will confirm with the manufacturer as both are dated the same with Beta1 as a label.
So far Battery two is behaving itself.
I shall fit the Neey 4.0 Battery Balancer on Battery one when all the bits arrive and see if that makes a difference.
ich habe ebenfalls (leider) den China-Akku vom Superbattery Store und ebenfalls auseinanderdriftende Zellen. Nachdem ich die Ladeschlussspannung auf 54.3 und die Erhaltungsspannung auf 53,5 gesetzt habe, kommt es zu weniger High Voltagefehlern. Gerade wird allerdings 100%SOC angezeigt. Als Kapazität habe ich 120Ah im ESS gesetzt. Ich nurze allerdings einen Victron Multiplus II .
Die Meisten Zellen sind ähnlich hoch geladen nur eine der Zellen driftet mit 3,6V weg... in der Anzeige vom BMS steht nichts, dass "Balancing" aktiv ist...
Heißt das, dass der Balancer nix macht? Als "Starting V" habe ich mitlerweile den default-Wert von 3,5 auf 3,44 gesetzt... Hat aber auch nix gebracht.
Habt ihr eine Empfehlung / Erfahrungen bezüglich eines BMS, was nachgerüstet werden könnte? Gibt es das oben beschriebene JK BMS mit 1A in mehreren Ausführungen oder kann man da nix falsch machen, wenn man das in der Bucht kauft?
As far as I am aware and according to my manufacturer JOSMA, which may be the same make as the Sunny Island, there is no Active or Passive Balancer in the BMS which is made by Daren High Tech.
The settings that are working best for me are 55.2v Bulk / Absorption and 54.0v Float. The Battery Cells then stay within about 20mv high to low which is great.
This charges my Battery to around 90% which is perfect for extending the life of the Battery. I personally like to.keep my Battery in the 20% to 90% SOC.
I have two of these Batteries and the other one is proving to be more problematic. However I have just found that, although being identical Batteries, they have two different Firmware. I will contact the manufacturer to update the one misbehaving Battery to see if I can get a better result.
Könnte jemand eine Beschreibung oder genauere Bilder posten, wie ein alternatives BMS in den China-Akku integriert werden kann?
Konkret frage ich ich, wo man die Pluspol- und die Minus-Pol-Kabel vom China-Akku am geschicktesten zum neuen BMS bringt und am besten das alte Parallel lässt (zu Kommunikations- und Anzeigezwecken)
