Thanks William, I got an adapter from a 3.5mm DC to the 2.5mm DC (for a 3A charger I have that has a 3.5mm connector) and it works like a charm.
On the other side, I just realised the cable I had ordered is exactly the same as yours, and obviously it won’t charge at more than 0.14A… what a pile of crap! I had ordered another cable, will see if it works when it arrives.
BTW, the original charger is not working any more for me, it just charges-discharges every second, so the battery gets charged after many many hours, but this is clearly not good for the battery, so I just discarded the charger.