The problem with compact 400wh is to attache it to the frame.
Powermore cable is not compatible with it, so If you use bosch supports, you need to use battery cables.
I made 2 cables ( 2 different solutions ) and an aluminum support for the standard bottles support.
The easiest cable can be made using one battery cable and a powermore cable.
Cut them to the size and crimp or solder the cables.
You will have a cable with a battery connector and a powermore connector, the small one that goes to the frame charging port.
Now, since this mixes two different cables you have to cross the yellow and green cables.
Red to red, black to black, green to yellow and yellow to green.
The second solution is more complicated because it involves non bosch connectors but it allows to connect the second battery directly to the motor, avoiding long cables and, additionally, charge the two batteries at the same time.
And you can also use it for the powermore.
It is also possible to make a parallel cable to charge 2 batteries at the same time.
Just remember to cross yellow and green cables when you use different bosch connectors.
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