I hope to read of others who have purchased and used ebike-specific back packs for the purpose of bringing along an extra ebike battery. Looking into it several years ago, I found these types of backpacks were exclusive to Euro backpack makers as the mtb ebike market there caught on earlier than here in the US. Here's an example of one made by Vaude:
https://www.vaude.com/en-INT/Equipm...-Backpacks/32656/eBracket-28-Cycling-backpack Unfortunately, this is a German brand with what seems to be no US sellers listed. I did not check Ridewill IT, who gladly sell to US buyers, so they are worth a shot to see what is available in the area of ebike specific backpacks.
The way I read the opening thread by
@Nomad, the poster was asking about info out there from people who use a backpack to carry a spare battery. It DID NOT ask for any other personal opinions about these backpacks and we should all respect the OP's original post in that spirit.
Some personal experience gained in carrying batteries in rack mounted panniers, in order to put the thought to rest that this is the only safe way to carry a spare battery or two.... To those who do carry spare batteries in their rack mounted panniers- that is what I do when going on extra long rides. I can tell you that my ebike battery-carrying panniers; Ortlieb E-Mates, will not last long on any kind of real MTB riding scenario. Ortlieb did not build these things beyond what they do with their standard panniers: flimsy plastic rack hooks instead of steel or diecast steel. Ditto the inner backing plate from which the battery attaches; instead of a heavy duty fiberglass backing, it is a cheap plastic in which the battery pouch is strapped to. Hitting any bump in the road or trail and there is an unsettling thunk as all that plastic takes the brunt of the hit.
So the ebike specific backpack has it's place in any long distance ebiking.
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There are 2 500wh Yamaha external batteries within these Ortlieb E-Mates and this was the beginning of a 95 mile, on-road ride, in 2019. The first ever ride using these bags, carrying batteries. And I learned early in the trip that any and all pot holes, street drain grates and the like were to be avoided in order to reduce the shock load placed on those cheap plastic Ortlieb hooks and clips.
