Buy new Dongle or not?

[Mac_user82]

it needs to be capacity tested as that mileage is not right for a bosch batt that new.

i get 25 miles with my 2014 batt if i dont hammer it in turbo all the time even with a dongle.

bosch has a new capacity test box but not sure it is out yet for dealers to use.

cant the dealer let you try another batt? as something is not right.

i have recently just had two new batteries which i haven't tried with the dongle i might give it a go when the weather comes a little better and do some testing and see how i get on with it all