You need at least 3 rivnuts to hold a hailong type battery.How are people stopping the battery from wobbling and shaking about whilst riding especially off-road? Have you fitted rubber spacers between the battery mount and frame and/or added additional rivnuts or velcro straps. I would not be particularly happy having a 5 kilo battery held in by two 5mm bolts! I am tempted to do all 3 for complete peace of mind.
I needed an adaptor on two of my bikes as the bottle cage mounts were too close to the seat tube. At first I contemplated buying one of those, but being a skinflint I baulked at the price!I heard about a mounting plate from Grin Technologies and found one on Amazon UK.
It's called a Double Bob.
This bike is a road tourer, so I'm still not sure I will need the extra Jubilee clips that come with the 'Bob'.
Battery Anchors - Grin Products - Product Info
Many aftermarket ebike battery packs don’t come with the best hardware for securing them to the bicycle frame. We’ve tackled this problem with a range of machined aluminum battery anchors that are much more versatile, from the popular double and triple bob’s to more specific solutions for things...ebikes.ca