I bought a shark cased battery for mine and had the same issue .Bottle holes to far down.I used a foot of inch wide steel strip .Drilled for a couple of m5 bolts high up for the bracket .An lower down for the bottle fittings.ok, bought and installed the bafang 750w mid drive.
Now the battery is baffling me, it doesn’t fit into the water bottle slots so how on earth do I fit it?
Ali
This is probably a good idea if you don't like the idea of drilling into the frame.or on the actual battery bracket itself can`t you drill a couple of holes so it all lines up?