Hello, first of all sorry for my bad english!
I have an Orion-Tr12/12-9 bought about a year ago. This unit is charing my LiFePo4 4s1p, i charge the pack over the 12V outlet from my Car, this works great.
Now i ordered 3 more 12/12-9 but this units won´t work to charge my 4s1p pack.
Until now i can charge them if i plug the connector from the input side to my Car and than i have to disconnect the batterypack connect i back an then it starts charging.
Can anyone tell me why? Why does the older one works great, and the newer won´t do the Jobs?
The only different i can see on my units are the "E4" and the "10R-06 4720"
the shop i bought them cant help me, they said i can use them as chargers.
the "old" one
the "new" one
Does anyone know what the problem is?
Is there a new revision or model or something?!
Thanks and greets from Germany!