BMZ RANGE EXTENDER

[Gspot]

Found this online. Curious if anyone has any input or experience?

BMZ Range Extender 36V 254Wh 7Ah Akku Unterrohr E-Bike - KS BIKES, Fahrräder, Fahrrad-Teile, E-Bike, Pedelec, Akkus

 

[Yorkshirelad]

No takers? I’m tempted by one of these