I think I read a post from Chord, that is similar to this
post
This would be similar to my experience with the Poly, and cause similar issues with a
particular use case.
By that I mean that if an owner typically uses Hugo2/2Go for a short time (lets assume 2h) each day, and then puts both units on charge together for say just a couple of hours each day.
The consequence of Hugo2 having the priority in charging, is that each day the Hugo gets recharged, but the 2Go will have received little or no recharge.
So the Hugo2 will continue happily in a state of near full charge for many days.
In contrast the 2Go battery is almost losing 2 hours charge a day, because it is never getting much chance to recharge.
I suspect that this lies behind the posts by some 2Go owners, who post that their 2Go battery has already died.
The solution to test, would be to either leave the Hugo2/2Go to charge for several hours in between use, or charge the Hugo2 and 2Go separately (which itself has the issue of dismantling the connecting lugs etc).