My Trent works just fine with any cable I throw at it.
Did you try different cables?
Contact Trent. I know they are based abroad but they might be able to help out.
It really effects the functionality of the product.
The Trent I have is smaller and a different model. I think it's 5200 mAh iTorch and it works fine except for the LED indicator
The thing is that I had bought this in USA when I was there and I had contacted them and insisted on sending me a small 30 pin connector (it wasn't there when I bought the battery pack) for their stock cable and it worked so I left it there.
As it now it is out f warranty I believe since I bought it back in November 2011